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Lie SL, Hisdal J, Rehn M, Høiseth LØ. Effect of systemic vascular resistance on the agreement between stroke volume by non-invasive pulse wave analysis and Doppler ultrasound in healthy volunteers. PLoS One 2024; 19:e0302159. [PMID: 38713665 DOI: 10.1371/journal.pone.0302159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 03/27/2024] [Indexed: 05/09/2024] Open
Abstract
BACKGROUND Stroke volume can be estimated beat-to-beat and non-invasively by pulse wave analysis (PWA). However, its reliability has been questioned during marked alterations in systemic vascular resistance (SVR). We studied the effect of SVR on the agreement between stroke volume by PWA and Doppler ultrasound during reductions in stroke volume in healthy volunteers. METHODS In a previous study we simultaneously measured stroke volume by PWA (SVPWA) and suprasternal Doppler ultrasound (SVUS). We exposed 16 healthy volunteers to lower body negative pressure (LBNP) to reduce stroke volume in combination with isometric hand grip to elevate SVR. LBNP was increased by 20 mmHg every 6 minutes from 0 to 80 mmHg, or until hemodynamic decompensation. The agreement between SVPWA and SVUS was examined using Bland-Altman analysis with mixed regression. Within-subject limits of agreement (LOA) was calculated from the residual standard deviation. SVRUS was calculated from SVUS. We allowed for a sloped bias line by introducing the mean of the methods and SVRUS as explanatory variables to examine whether the agreement was dependent on the magnitude of stroke volume and SVRUS. RESULTS Bias ± limits of agreement (LOA) was 27.0 ± 30.1 mL. The within-subject LOA was ±11.1 mL. The within-subject percentage error was 14.6%. The difference between methods decreased with higher means of the methods (-0.15 mL/mL, confidence interval (CI): -0.19 to -0.11, P<0.001). The difference between methods increased with higher SVRUS (0.60 mL/mmHg × min × L-1, 95% CI: 0.48 to 0.72, P<0.001). CONCLUSION PWA overestimated stroke volume compared to Doppler ultrasound during reductions in stroke volume and elevated SVR in healthy volunteers. The agreement between SVPWA and SVUS decreased during increases in SVR. This is relevant in settings where a high level of reliability is required.
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Affiliation(s)
- Sole Lindvåg Lie
- Norwegian Air Ambulance Foundation, Department of Research and Development, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Marius Rehn
- Norwegian Air Ambulance Foundation, Department of Research and Development, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Air Ambulance Department, Division of Prehospital Services, Oslo University Hospital, Oslo, Norway
| | - Lars Øivind Høiseth
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Anesthesia and Intensive Care Medicine, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
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Sletten OJ, Aalen JM, Smiseth OA, Khan FH, Fossa A, Kiserud CE, Villegas-Martinez M, Hisdal J, Remme EW, Skulstad H. Mental Stress Reduces Left Ventricular Strain: Can It Lead to Misinterpretation of Cancer Therapy-Related Cardiac Dysfunction? J Am Soc Echocardiogr 2024; 37:564-566. [PMID: 37981246 DOI: 10.1016/j.echo.2023.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/21/2023]
Affiliation(s)
- Ole J Sletten
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - John M Aalen
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Otto A Smiseth
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Faraz H Khan
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Alexander Fossa
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Oncology, Oslo University Hospital, Radiumhospitalet, Oslo, Norway
| | - Cecilie E Kiserud
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Oncology, Oslo University Hospital, Radiumhospitalet, Oslo, Norway
| | - Manuel Villegas-Martinez
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; The Intervention Center, Oslo University Hospital, Oslo, Norway
| | - Jonny Hisdal
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Espen W Remme
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; The Intervention Center, Oslo University Hospital, Oslo, Norway
| | - Helge Skulstad
- Institute for Surgical Research, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Nordén KR, Semb AG, Dagfinrud H, Hisdal J, Sexton J, Fongen C, Bakke E, Ødegård S, Skandsen J, Blanck T, Metsios GS, Tveter AT. Effect of high-intensity interval training in physiotherapy primary care for patients with inflammatory arthritis: the ExeHeart randomised controlled trial. RMD Open 2024; 10:e003440. [PMID: 38242550 PMCID: PMC10806524 DOI: 10.1136/rmdopen-2023-003440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 12/25/2023] [Indexed: 01/21/2024] Open
Abstract
OBJECTIVES To assess the effect of high-intensity interval training (HIIT) delivered in physiotherapy primary care on the primary outcome of cardiorespiratory fitness (CRF) in patients with inflammatory arthritis (IA). Additionally, to explore the effects of HIIT on secondary outcomes, including cardiovascular disease (CVD) risk factors and disease activity. METHODS Single-blinded randomised controlled trial with 60 patients randomly assigned to either a control group receiving usual care or an exercise group receiving usual care and 12 weeks of individualised HIIT at 90%-95% peak heart rate. Outcomes were assessed at baseline, 3 months and 6 months post baseline and included CRF measured as peak oxygen uptake (VO2peak), classic CVD risk factors, disease activity, anthropometry and patient-reported physical activity, pain, fatigue, disease impact and exercise beliefs and self-efficacy. RESULTS Intention-to-treat analysis demonstrated a significant between-group difference in VO2peak at 3 months (2.5 mL/kg/min, 95% CI 0.9 to 4.0) and 6 months (2.6 mL/kg/min, 95% CI 0.8 to 4.3) in favour of the exercise group. A beneficial change in self-reported physical activity in favour of the exercise group was observed at 3 and 6 months. The HIIT intervention was well-tolerated with minimal adverse events and no apparent impact on disease activity. Differences in secondary outcomes related to CVD risk factors, disease impact, pain, fatigue and exercise beliefs and self-efficacy were generally small and non-significant. CONCLUSION After 12 weeks of supervised HIIT delivered in physiotherapy primary care, patients with IA demonstrated a favourable improvement in CRF, with sustained effects at 6-month follow-up. TRIAL REGISTRATION NUMBER NCT04922840.
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Affiliation(s)
- Kristine Røren Nordén
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
- Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Health Services Research and Innovation Unit, Diakonhjemmet Hospital, Oslo, Norway
| | - Anne Grete Semb
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway
| | - Hanne Dagfinrud
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
- Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Health Services Research and Innovation Unit, Diakonhjemmet Hospital, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Joseph Sexton
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway
| | - Camilla Fongen
- Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Health Services Research and Innovation Unit, Diakonhjemmet Hospital, Oslo, Norway
| | - Emilie Bakke
- Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Health Services Research and Innovation Unit, Diakonhjemmet Hospital, Oslo, Norway
| | - Sigrid Ødegård
- Norwegian National Unit for Rehabilitation for Rheumatic Patients with Special Needs, Diakonhjemmet Hospital, Oslo, Norway
| | - Jon Skandsen
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway
| | - Thalita Blanck
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway
| | - George S Metsios
- Department of Nutrition and Dietetics, University of Thessaly, Volos, Greece
| | - Anne Therese Tveter
- Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Health Services Research and Innovation Unit, Diakonhjemmet Hospital, Oslo, Norway
- Faculty of Health Sciences, Institute of Rehabilitation Science and Health Technology, Oslo Metropolitan University, Oslo, Akershus, Norway
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Lie SL, Hisdal J, Rehn M, Høiseth LØ. Hemodynamic effects of supplemental oxygen versus air in simulated blood loss in healthy volunteers: a randomized, controlled, double-blind, crossover trial. Intensive Care Med Exp 2023; 11:76. [PMID: 37947905 PMCID: PMC10638149 DOI: 10.1186/s40635-023-00561-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 11/01/2023] [Indexed: 11/12/2023] Open
Abstract
BACKGROUND Trauma patients frequently receive supplemental oxygen, but its hemodynamic effects in blood loss are poorly understood. We studied the effects of oxygen on the hemodynamic response and tolerance to simulated blood loss in healthy volunteers. METHODS Fifteen healthy volunteers were exposed to simulated blood loss by lower body negative pressure (LBNP) on two separate visits at least 24 h apart. They were randomized to inhale 100% oxygen or medical air on visit 1, while inhaling the other on visit 2. To simulate progressive blood loss LBNP was increased every 3 min in levels of 10 mmHg from 0 to 80 mmHg or until hemodynamic decompensation. Oxygen and air were delivered on a reservoired face mask at 15 L/min. The effect of oxygen compared to air on the changes in cardiac output, stroke volume and middle cerebral artery blood velocity (MCAV) was examined with mixed regression to account for repeated measurements within subjects. The effect of oxygen compared to air on the tolerance to blood loss was measured as the time to hemodynamic decompensation in a shared frailty model. Cardiac output was the primary outcome variable. RESULTS Oxygen had no statistically significant effect on the changes in cardiac output (0.031 L/min/LBNP level, 95% confidence interval (CI): - 0.015 to 0.077, P = 0.188), stroke volume (0.39 mL/LBNP level, 95% CI: - 0.39 to 1.2, P = 0.383), or MCAV (0.25 cm/s/LBNP level, 95% CI: - 0.11 to 0.61, P = 0.176). Four subjects exhibited hemodynamic decompensation when inhaling oxygen compared to 10 when inhaling air (proportional hazard ratio 0.24, 95% CI: 0.065 to 0.85, P = 0.027). CONCLUSIONS We found no effect of oxygen compared to air on the changes in cardiac output, stroke volume or MCAV during simulated blood loss in healthy volunteers. However, oxygen had a favorable effect on the tolerance to simulated blood loss with fewer hemodynamic decompensations. Our findings suggest that supplemental oxygen does not adversely affect the hemodynamic response to simulated blood loss. Trial registration This trial was registered in ClinicalTrials.gov (NCT05150418) December 9, 2021.
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Affiliation(s)
- Sole Lindvåg Lie
- Department of Research and Development, Norwegian Air Ambulance Foundation, Oslo, Norway.
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
- Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway.
| | - Jonny Hisdal
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Marius Rehn
- Department of Research and Development, Norwegian Air Ambulance Foundation, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Air Ambulance Department, Division of Prehospital Services, Oslo University Hospital, Oslo, Norway
| | - Lars Øivind Høiseth
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Anesthesia and Intensive Care Medicine, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
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Nordén KR, Dagfinrud H, Semb AG, Hisdal J, Metsios GS, Sexton J, Fongen C, Bakke EA, Tveter AT. Criterion Validity and Responsiveness of Estimated Cardiorespiratory Fitness Models in Patients with Inflammatory Joint Disease. J Clin Med 2023; 12:6753. [PMID: 37959219 PMCID: PMC10650593 DOI: 10.3390/jcm12216753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/20/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Cardiorespiratory fitness (CRF) is an excellent marker of overall health. This study aimed to assess criterion validity and responsiveness of estimated CRF models (eCRF) in patients with inflammatory joint disease (IJD). CRF was measured directly as peak oxygen uptake (VO2peak) by a Cardiopulmonary Exercise Test (CPET), while one generic eCRF model (eCRFGEN) and two disease-specific eCRF models (eCRFALT and eCRFPGA) were used to estimate CRF at baseline and after 3 months in 55 Norwegian patients with IJD. Moderate correlations were observed between eCRFGEN, eCRFALT, eCRFPGA, and VO2peak at baseline (ICC 0.60, 0.64 and 0.62, respectively) and 3 months (ICC 0.62, 0.65 and 0.57, respectively). All eCRF models overestimated measured VO2peak, and there was large variability in agreement of individual measurements at baseline and at 3 months. Weak correlations were observed for responsiveness of eCRFGEN (ICC 0.39), eCRFALT (ICC 0.40) and eCRFPGA (ICC 0.39). Mean differences between change in eCRF models and change in VO2peak were small, but the wide limits of agreement exceeded the pre-defined clinically acceptable margins. The eCRF models possessed adequate ability to detect ≥3.5 mL/kg/min improvement in VO2peak. eCRF may suffice for group-level assessment, but caution is advised when applying eCRF to individual patients with IJD.
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Affiliation(s)
- Kristine Røren Nordén
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Diakonhjemmet Hospital, 0319 Oslo, Norway
- Institute of Health and Society, Faculty of Medicine, University of Oslo, 0316 Oslo, Norway
- Norwegian National Unit for Rehabilitation for Rheumatic Patients with Special Needs, Diakonhjemmet Hospital, 0319 Oslo, Norway
| | - Hanne Dagfinrud
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Diakonhjemmet Hospital, 0319 Oslo, Norway
- Institute of Health and Society, Faculty of Medicine, University of Oslo, 0316 Oslo, Norway
| | - Anne Grete Semb
- Preventive Cardio-Rheuma Clinic, Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Division of Rheumatology and Research, Diakonhjemmet Hospital, 0319 Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway;
- Department of Vascular Surgery, Oslo University Hospital—Aker, 0586 Oslo, Norway
| | - George S. Metsios
- Department of Nutrition and Dietetics, University of Thessaly, 42132 Trikala, Greece
| | - Joseph Sexton
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Division of Rheumatology and Research, Diakonhjemmet Hospital, 0319 Oslo, Norway
| | - Camilla Fongen
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Diakonhjemmet Hospital, 0319 Oslo, Norway
| | - Emilie Andrea Bakke
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Diakonhjemmet Hospital, 0319 Oslo, Norway
| | - Anne Therese Tveter
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Diakonhjemmet Hospital, 0319 Oslo, Norway
- Faculty of Health Sciences, Institute of Rehabilitation Science and Health Technology, Oslo Metropolitan University, 0166 Oslo, Norway
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Høiseth LØ, Fjose LO, Hisdal J, Comelon M, Rosseland LA, Lenz H. Haemodynamic effects of methoxyflurane versus fentanyl and placebo in hypovolaemia: a randomised, double-blind crossover study in healthy volunteers. BJA Open 2023; 7:100204. [PMID: 37638077 PMCID: PMC10457468 DOI: 10.1016/j.bjao.2023.100204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 05/31/2023] [Indexed: 08/29/2023]
Abstract
Background Methoxyflurane is approved for relief of moderate to severe pain in conscious adult trauma patients: it may be self-administrated and is well suited for use in austere environments. Trauma patients may sustain injuries causing occult haemorrhage compromising haemodynamic stability, and it is therefore important to elucidate whether methoxyflurane may adversely affect the haemodynamic response to hypovolaemia. Methods In this randomised, double-blinded, placebo-controlled, three-period crossover study, inhaled methoxyflurane 3 ml, i.v. fentanyl 25 μg, and placebo were administered to 15 healthy volunteers exposed to experimental hypovolaemia in the lower body negative pressure model. The primary endpoint was the effect of treatment on changes in cardiac output, while secondary endpoints were changes in stroke volume and mean arterial pressure and time to haemodynamic decompensation during lower body negative pressure. Results There were no statistically significant effects of treatment on the changes in cardiac output, stroke volume, or mean arterial pressure during lower body negative pressure. The time to decompensation was longer for methoxyflurane compared with fentanyl (hazard ratio 1.9; 95% confidence interval 0.4-3.4; P=0.010), whereas there was no significant difference to placebo (hazard ratio -1.3; 95% confidence interval -2.8 to 0.23; P=0.117). Conclusions The present study does not indicate that methoxyflurane has significant adverse haemodynamic effects in conscious adults experiencing hypovolaemia. Clinical trial registration ClinicalTrials.gov (NCT04641949) and EudraCT (2019-004144-29) https://www.clinicaltrialsregister.eu/ctr-search/trial/2019-004144-29/NO.
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Affiliation(s)
- Lars Øivind Høiseth
- Department of Anaesthesia and Intensive Care Medicine, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Lars Olav Fjose
- Norwegian Air Ambulance Foundation, Oslo, Norway
- Division of Pre-hospital Services, Innlandet Hospital Trust, Moelv, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Marlin Comelon
- Department of Anaesthesia and Intensive Care Medicine, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
| | - Leiv Arne Rosseland
- Department of Anaesthesia and Intensive Care Medicine, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Research and Development, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
| | - Harald Lenz
- Department of Anaesthesia and Intensive Care Medicine, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
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Mansoor SM, Rabben T, Hisdal J, Jørgensen JJ. Eleven-Year Outcomes of a Screening Project for Abdominal Aortic Aneurysm (AAA) in 65-Year-Old Men. Vasc Health Risk Manag 2023; 19:459-467. [PMID: 37485231 PMCID: PMC10361273 DOI: 10.2147/vhrm.s412954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/13/2023] [Indexed: 07/25/2023] Open
Abstract
Objective Since 2011, the Department of Vascular Surgery at Oslo University Hospital has offered screening for abdominal aortic aneurysm (AAA) to 65-year-old men living in Oslo, Norway. The aim of this study was to evaluate the effect of the screening project on AAA-related mortality and rupture and repair rates in the screened population. Methods This cohort study included men that participated in AAA screening at the Department of Vascular Surgery at Oslo University Hospital in the period May 2011 to September 2019. All men with screen-detected AAA (aortic diameter ≥30 mm) and subaneurysmal aortic dilatation (aortic diameter 25-29 mm) were included. A stratified (1:1 with the subaneurysm group), randomized selection of men with normal aortic diameter (<25 mm) upon screening was also included. The follow-up data on events (ruptures, repairs, and deaths) after screening were collected retrospectively from patient electronic medical records at Oslo University Hospital, the National Population Register and the Norwegian Cause of Death Registry (CoDR). Results In total, 2048 men were included, with a median follow-up time of 7.1 years (IQR 3.8). Among men with screen-detected AAA, 0.6% died of AAA-related causes (0.9 AAA-related deaths per 1000 person-years). The rupture rate was 0.3% among men with screen-detected AAA or subaneurysmal aortic dilatation, giving an incidence of 0.5 ruptures per 1000 person-years. The overall repair rate in the AAA group was 20.6% (36.1 repairs per 1000 person-years) and 0.6% (0.9 repairs per 1000 person-years) in the subaneurysm group. Conclusion In a population screened for AAA, the incidence of rupture and the AAA-related mortality was very low. Almost one-fifth of the participants with screen-detected AAA underwent elective repair, representing a group that might have presented with rupture if untreated. These results indicate that screening is valuable in preventing AAA rupture and AAA-related mortality.
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Affiliation(s)
- Saira Mauland Mansoor
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Toril Rabben
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Jørgen Joakim Jørgensen
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department of Traumatology, Oslo University Hospital, Oslo, Norway
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Nyhus Hagum C, Tønnessen E, Hisdal J, Shalfawi SAI. The effect of progressive and individualised sport-specific training on the prevalence of injury in football and handball student athletes: a randomised controlled trial. Front Sports Act Living 2023; 5:1106404. [PMID: 37346384 PMCID: PMC10279870 DOI: 10.3389/fspor.2023.1106404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 05/22/2023] [Indexed: 06/23/2023] Open
Abstract
Objective To evaluate the effectiveness of communication and coordination combined with designing a progressive and individualised sport-specific training program for reducing injury prevalence in youth female and male football and handball players transitioning to a sports academy high school. An additional aim was to investigate the characteristics of the reported injuries. Methods Forty-two Norwegian athletes were randomised into an intervention or control group. Mean age, height, weight and BMI was 15.5 ± 0.5 years, 178.6 cm ± 6.3 cm, 71.3 ± 9.8 kg, 22.3 ± 2.7 BMI for the intervention group (IG) (n = 23), and 15.4 ± 0.5 years, 175.6 cm ± 6.6 cm, 67.1 ± 9.8 kg, 21.7 ± 2.4 BMI for the control group (CG) (n = 19). During the summer holiday, the intervention group received weekly progressive, individualised sport-specific training programs and weekly follow-up telephone calls from the researchers. All athletes completed a baseline questionnaire and a physical test battery. Training data and injuries were recorded prospectively for 22 weeks using the Oslo Sports Trauma Research Center Questionnaire on Health Problems (OSTRC-H2). A two-way chi-square (χ2) test of independence was conducted to examine the relationship between groups and injury. Results Average weekly prevalence of all injuries was 11% (95% CI: 8%-14%) in IG and 19% (95% CI: 13%-26%) in CG. Average weekly prevalence of substantial injuries was 7% (95% CI: 3%-10%) in IG and 10% (95% CI: 6%-13%) in CG. The between-group difference in injuries was significant: χ2 (1, N = 375) = 4.865, p = .031, φ = .114, with 1.8 times higher injury risk in CG vs. IG during the first 12 weeks after enrolment. Conclusions For student athletes transitioning to a sports academy high school, progressive individualised, sport-specific training programs reduced the prevalence of all-complaint injuries following enrolment. Clubs and schools should prioritise time and resources to implement similar interventions in periods where student athletes have less supervision, such as the summer holidays, to facilitate an optimal transition to a sports academy high school.
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Affiliation(s)
- Cathrine Nyhus Hagum
- Department of Education and Sports Science, University of Stavanger, Stavanger, Norway
| | - Espen Tønnessen
- Faculty of Health Sciences, Kristiania University College, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
| | - Shaher A. I. Shalfawi
- Department of Education and Sports Science, University of Stavanger, Stavanger, Norway
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Nordén KR, Semb AG, Dagfinrud H, Hisdal J, Ødegård S, Sexton J, Fongen C, Skandsen J, Blanck T, Metsios GS, Tveter AT. Associations between cardiovascular risk factors, disease activity and cardiorespiratory fitness in patients with inflammatory joint disease: a cross-sectional analysis. BMC Sports Sci Med Rehabil 2023; 15:63. [PMID: 37085935 PMCID: PMC10120183 DOI: 10.1186/s13102-023-00678-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/19/2023] [Indexed: 04/23/2023]
Abstract
BACKGROUND Inflammatory joint diseases (IJD) are accompanied by an increased risk of cardiovascular disease (CVD). Cardiorespiratory fitness (CRF) is a modifiable CVD risk factor and low levels of CRF associate with an elevated CVD risk. This study aimed to investigate the associations between CVD risk factors, disease activity and CRF in patients with IJD and to explore differences between patients with normal versus low levels of CRF. METHODS CRF was measured as peak oxygen uptake (VO2peak) with a cardiopulmonary exercise test. Participants were also evaluated for: Body composition, blood pressure, blood lipids, inflammatory markers and disease activity. Patient-reported use of cigarettes/snuff, medication, disease duration, pain, fatigue, CVD history, habitual physical activity and exercise beliefs and self-efficacy were collected by questionnaire. Cross-sectional associations between CVD risk factors, disease-related factors and CRF were analyzed by multiple linear regression. CRF was categorized to normal CRF (VO2peak ≥ 80%) or low CRF (VO2peak < 80%) according to age- and gender-stratified reference data. Differences in demographic, CVD and disease-related factors between patients with normal versus low CRF were explored. RESULTS In 60 Norwegian patients with IJD [34 females, age 59 years (IQR: 52-63)], mean VO2peak was 30.2 (± 6.9) mL/kg/min, corresponding to 83% (± 18) of normative reference values. Age (coefficient: - 0.18 years, p = 0.01) and fat mass (coefficient: - 0.67 %, p < 0.001) were inversely associated with CRF, while physical activity index (coefficient: 0.13 points, p = 0.05) was positively associated with CRF (R2 = 0.66). There were no significant associations between CRF, classical CVD risk factors and disease-related variables. Compared to patients with low CRF (n = 30), patients with normal CRF (n = 30) had higher peak oxygen uptake (+ 9.4 mL/kg/min, p < 0.001), high-density lipoprotein cholesterol (+ 0.5 mmol L-1, p < 0.001), and exercise self-efficacy (+ 6.9, p < 0.01) as well as lower fat mass (- 8.7%, p < 0.001), resting heart rate (- 8.0 beats/min, p < 0.01) and triglycerides (- 0.5 mmol L-1, p < 0.01). CONCLUSIONS In this sample of IJD-patients, age, fatmass and physical activity level were associated with CRF. CRF was lower than reference values and patients with normal CRF presented with a more favorable health profile. There is a continued need for exercise interventions to improve CRF in patients with IJD. TRIAL REGISTRATION NCT04922840.
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Affiliation(s)
- Kristine Røren Nordén
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Postboks 23, 0319, Vinderen, Oslo, Norway.
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway.
| | - Anne Grete Semb
- The Preventive Cardio-Rheuma Clinic, Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway
| | - Hanne Dagfinrud
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Postboks 23, 0319, Vinderen, Oslo, Norway
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Oslo University Hospital-Aker, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Sigrid Ødegård
- Norwegian National Unit for Rehabilitation for Rheumatic Patients with Special Needs, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Joseph Sexton
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Postboks 23, 0319, Vinderen, Oslo, Norway
| | - Camilla Fongen
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Postboks 23, 0319, Vinderen, Oslo, Norway
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Jon Skandsen
- Patient Advisory Board, Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway
| | - Thalita Blanck
- Patient Advisory Board, Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway
| | - George S Metsios
- Department of Nutrition and Dietetics, University of Thessaly, Trikala, Thessaly, Greece
| | - Anne Therese Tveter
- Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Postboks 23, 0319, Vinderen, Oslo, Norway
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
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10
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Kyte KH, Lunde C, Hisdal J. Post-Exercise Ankle–Brachial Index Is Reduced in Healthy, Young Individuals at a Level Indicating Peripheral Artery Disease. Clin Pract 2023; 13:529-536. [PMCID: PMC10137027 DOI: 10.3390/clinpract13020049] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/29/2023] [Accepted: 04/14/2023] [Indexed: 02/10/2024] Open
Abstract
In young patients referred for exercise-induced pain in the legs, false positive tests are a potential problem for the post-exercise ankle–brachial index (ABI) test when using the current American Heart Association guidelines for diagnosing peripheral artery disease (PAD). The present study aimed to investigate post-exercise ABI in healthy young people, and to explore whether the current diagnostic criteria for pathological ABI should be revised. Forty-eight volunteers (18–30 years) were included. Resting examinations included ABI and ultrasound of the external iliac artery. Post-exercise examinations after a treadmill load included ABI and ultrasound of the external iliac artery; after 0 min and after 3 min. A total of 60.5% of the participants had a post-exercise decrease in ABI > 20%. A total of 6.5% showed a decrease in ankle systolic blood pressure >30 mmHg. No significant association was observed between a change in blood flow in the external iliac artery and a reduction in ABI post-exercise. Analyses of the ultrasound recordings showed no turbulence in the external iliac artery. According to the results, a 20% decrease in ABI post-exercise seems to be a physiological condition present in young people. We support the need for a reassessment of the criteria for diagnosing PAD.
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Affiliation(s)
- Karoline Holsen Kyte
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (K.H.K.); (C.L.)
- Section of Vascular Investigations, Oslo University Hospital, Aker, 0586 Oslo, Norway
| | - Cecilie Lunde
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (K.H.K.); (C.L.)
- Section of Vascular Investigations, Oslo University Hospital, Aker, 0586 Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (K.H.K.); (C.L.)
- Section of Vascular Investigations, Oslo University Hospital, Aker, 0586 Oslo, Norway
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11
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Kyte KH, Haakstad LAH, Hisdal J, Sunde A, Stensrud T. Bone health in Norwegian female elite runners: a cross-sectional, controlled study. BMJ Open Sport Exerc Med 2023; 9:e001472. [PMID: 36844436 PMCID: PMC9950887 DOI: 10.1136/bmjsem-2022-001472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2023] [Indexed: 02/24/2023] Open
Abstract
Objective The primary objective was to compare bone mineral density (BMD) in Norwegian female elite long-distance runners with a control group of inactive females. Secondary objectives were to identify cases of low BMD, to compare the concentration of bone turnover markers, vitamin D and symptoms of low energy availability (LEA) between the groups, and to identify possible associations between BMD and selected variables. Methods Fifteen runners and fifteen controls were included. Assessments included dual-energy X-ray absorptiometry measurement of BMD in the total body, lumbar spine and dual proximal femur. Blood samples included endocrine analyses and circulating bone turnover markers. The risk of LEA was assessed through a questionnaire. Results Runners had higher Z-scores in the dual proximal femur (1.30 (0.20 to 1.80) vs 0.20 (-0.20 to 0.80), p<0.021) and total body (1.70 (1.20 to 2.30) vs 0.90 (0.80 to 1.00), p<0.001). The lumbar spine Z-score was similar between groups (0.10 (-0.70 to 0.60) vs -0.10(-0.50 to 0.50), p=0.983). Three runners had low BMD (Z-score <-1) in the lumbar spine. Vitamin D and bone turnover markers showed no differences between the groups. Forty-seven per cent of the runners were at risk of LEA. Dual proximal femur BMD showed a positive correlation to estradiol and a negative correlation to LEA symptoms in runners. Conclusion Norwegian female elite runners had higher BMD Z-score in the dual proximal femur and total body compared with controls, while no difference was observed in the lumbar spine. The advantages of long-distance running on bone health seem to be site specific, and there is still a need for the prevention of LEA and menstrual disorders in this group.
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Affiliation(s)
- Karoline Holsen Kyte
- Institute of Clinical Medicine, University of Oslo Faculty of Medicine, Oslo, Norway,Department of Vascular Surgery, Oslo University Hospital, Aker, Oslo, Norway
| | - Lene A H Haakstad
- Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, University of Oslo Faculty of Medicine, Oslo, Norway,Department of Vascular Surgery, Oslo University Hospital, Aker, Oslo, Norway
| | - Andrine Sunde
- Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
| | - Trine Stensrud
- Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
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12
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Kazmi SSH, Safi N, Berge ST, Kazmi M, Sundhagen JO, Julien K, Thorsby PM, Ånonsen KV, Medhus AW, Hisdal J. Plasma α-Glutathione S-Transferase in Patients with Chronic Mesenteric Ischemia and Median Arcuate Ligament Syndrome. Vasc Health Risk Manag 2022; 18:567-574. [PMID: 35903288 PMCID: PMC9315055 DOI: 10.2147/vhrm.s365625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/14/2022] [Indexed: 11/23/2022] Open
Abstract
Background Chronic mesenteric ischemia (CMI) due to either atherosclerosis of the mesenteric arteries or median arcuate ligament syndrome (MALS) is an underdiagnosed entity. The etiology of MALS and its existence have been debated and questioned. We aimed to identify plasma biomarkers indicating mesenteric ischemia in patients with CMI and MALS. Methods Plasma α-glutathione S-transferase (α-GST), intestinal fatty acid-binding protein (I-FABP), citrulline, and ischemia modified albumin (IMA) were analyzed in fifty-eight patients with CMI (Group A, n=44) and MALS (Group B, n=14) before and after revascularization. The plasma levels of these potential biomarkers were compared with those of healthy individuals (Group C, n=16). Group comparison was performed with the Mann–Whitney U-test. Cross-tabulation and its derivatives were obtained. Receiver operating characteristic (ROC) curves and area under the curve (AUC) were calculated. Results Plasma levels of α-GST were significantly raised in the patients with CMI (7.8 ng/mL, p<0.001) and MALS (8.4 ng/mL, p<0.001), as compared with the control Group C (3.3 ng/mL). The threshold for normal median plasma α-GST levels of 4 ng/mL yielded a sensitivity of 93% and 86%, specificity of 86% and 88%, respectively, for the diagnosis of CMI due to atherosclerosis and MALS. AUC of ROC curves was 0.96 (p<0.0001) for CMI and 0.85 (p<0.002) for MALS. The patient groups did not differ from the healthy controls in any other biomarkers. Conclusion Plasma α-GST levels are elevated in CMI and MALS patients. Elevated plasma levels of α-GST suggest ischemia as the etiology of MALS.
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Affiliation(s)
- Syed Sajid Hussain Kazmi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Nathkai Safi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Simen Tveten Berge
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Marryam Kazmi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Faculty 2, Poznan University of Medical Sciences, Poznan, Poland
| | - Jon Otto Sundhagen
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Kari Julien
- The Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Aker, Oslo, Norway
| | - Per Medbøe Thorsby
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,The Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Aker, Oslo, Norway
| | - Kim Vidar Ånonsen
- Department of Gastroenterology, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Asle Wilhelm Medhus
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Gastroenterology, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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13
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Aune S, Bonnevie-Svendsen M, Nyborg C, Trøseid M, Seljeflot I, Hisdal J, Helseth R. Gut leakage and cardiac biomarkers after prolonged strenuous exercise in highly trained endurance athletes. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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14
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Støle Melsom H, Randa A, Hisdal J, Stang JS, Stensrud T. Prevalence of Asthma among Norwegian Elite Athletes. Transl Sports Med 2022; 2022:3887471. [PMID: 38655166 PMCID: PMC11022777 DOI: 10.1155/2022/3887471] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 06/14/2022] [Indexed: 04/26/2024]
Abstract
Objective Asthma is a common problem among elite athletes and represents a health risk interfering with the athlete's performance status. This study aimed to evaluate the asthma prevalence among Norwegian summer and winter elite athletes and asthma prevalence across sport categories. We also aimed to examine whether bronchial hyperresponsiveness (BHR), lung function, fraction of exhaled nitric oxide (FENO), and allergy status differed between asthmatic and non-asthmatic elite athletes. Methods Norwegian athletes qualifying for the Beijing Olympic Summer Games 2008 (n = 80) and the Vancouver Olympic Winter Games 2010 (n = 55) were included. The athletes underwent clinical respiratory examination including lung function measurement, methacholine bronchial challenge for assessment of BHR, FENO, and skin prick testing. Asthma was diagnosed based on respiratory symptoms and clinical examination including objective measurements. Results Asthma was more prevalent among winter athletes (50%) than summer athletes (20%). Thirty-three (52%) endurance athletes, 3 (6%) team sport athletes, and 7 (33%) technical sport athletes had medically diagnosed asthma. Significantly lower lung function (p < 0.001) and higher prevalence of severe BHR (p < 0.001) were found in asthmatic athletes compared with non-asthmatic athletes. Conclusion Asthma is common among Norwegian elite athletes, with winter and endurance athletes showing the highest prevalence. Asthmatic athletes were characterized by lower lung function and more severe BHR compared with non-asthmatic counterparts. The high prevalence among winter and endurance athletes demonstrates a need for increased attention to prevent and reduce the prevalence of asthma among those athletes.
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Affiliation(s)
- Helene Støle Melsom
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
| | - Anders Randa
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
| | - Julie Sørbø Stang
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Trine Stensrud
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
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15
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Tronstad C, Pabst O, Amini M, Kleggetveit IP, Elvebakk O, Martinsen OG, Jenssen TG, Hisdal J, Berg TJ, Qvigstad E. Development of a prototype toe sensor for detection of diabetic peripheral small fiber neuropathy. Annu Int Conf IEEE Eng Med Biol Soc 2022; 2022:99-104. [PMID: 36086669 DOI: 10.1109/embc48229.2022.9871101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Diabetic peripheral neuropathy (DPN) affects a large proportion of people with diabetes, and early detection is essential to prevent further progression. Widespread clinical testing relies on simplicity and cost-effectiveness of examination. Early signs of DPN may be detected by assessing the sudomotor nerves, and sudomotor activity can be measured by bioimpedance. We present a prototype toe probe for DPN detection including sensors for measuring skin AC conductance, skin temperature and humidity. The prototype was tested on five participants with DPN and five healthy age-matched controls in a pilot study. Sudomotor sensor responses to a simple deep breathing test were very weak or absent in the DPN group, with all controls having larger responses than the DPN group. Evaporation was lower for the DPN group, and skin temperature was higher on average. For the same foot, the results for sudomotor responses were in agreement with sensory neurography amplitudes from the sural nerve whereas the monofilament test gave normal results for two of the DPN participants. If sufficient detection accuracy is confirmed in larger studies, the method may provide a simple and cost-effective tool to support clinical examination. Clinical Relevance- We present the early realization and testing of a simple device to support early detection of diabetic peripheral neuropathy.
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16
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Lindvåg Lie S, Hisdal J, Rehn M, Høiseth LØ. Effects of supplemental oxygen on systemic and cerebral hemodynamics in experimental hypovolemia: Protocol for a randomized, double blinded crossover study. PLoS One 2022; 17:e0270598. [PMID: 35749486 PMCID: PMC9231698 DOI: 10.1371/journal.pone.0270598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 05/04/2022] [Indexed: 11/18/2022] Open
Abstract
Supplemental oxygen is widely administered in trauma patients, often leading to hyperoxia. However, the clinical evidence for providing supplemental oxygen in all trauma patients is scarce, and hyperoxia has been found to increase mortality in some patient populations. Hypovolemia is a common finding in trauma patients, which affects many hemodynamic parameters, but little is known about how supplemental oxygen affects systemic and cerebral hemodynamics during hypovolemia. We therefore plan to conduct an experimental, randomized, double blinded crossover study to investigate the effect of 100% oxygen compared to room air delivered by a face mask with reservoir on systemic and cerebral hemodynamics during simulated hypovolemia in the lower body negative pressure model in 15 healthy volunteers. We will measure cardiac output, stroke volume, blood pressure, middle cerebral artery velocity and tolerance to hypovolemia continuously in all subjects at two visits to investigate whether oxygen affects the cardiovascular response to simulated hypovolemia. The effect of oxygen on the outcome variables will be analyzed with mixed linear regression. Trial registration: The study is registered in the European Union Drug Regulating Authorities Clinical Trials Database (EudraCT, registration number 2021-003238-35).
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Affiliation(s)
- Sole Lindvåg Lie
- Department of Research and Development, Norwegian Air Ambulance Foundation, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
- * E-mail:
| | - Jonny Hisdal
- Faculty of Medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Marius Rehn
- Department of Research and Development, Norwegian Air Ambulance Foundation, Oslo, Norway
- Division of Prehospital Services, Air Ambulance Department, Oslo University Hospital, Oslo, Norway
- Faculty of Health Sciences, University of Stavanger, Stavanger, Norway
| | - Lars Øivind Høiseth
- Department of Research and Development, Norwegian Air Ambulance Foundation, Oslo, Norway
- Division of Emergencies and Critical Care, Department of Anesthesiology, Oslo University Hospital, Oslo, Norway
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17
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Melsom HS, Heiestad CM, Eftestøl E, Torp MK, Gundersen K, Bjørnebekk AK, Thorsby PM, Stensløkken KO, Hisdal J. Reduced arterial elasticity after anabolic-androgenic steroid use in young adult males and mice. Sci Rep 2022; 12:9707. [PMID: 35690664 PMCID: PMC9188580 DOI: 10.1038/s41598-022-14065-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 04/22/2022] [Indexed: 01/16/2023] Open
Abstract
High-doses of anabolic-androgenic steroids (AAS) is efficient for building muscle mass, but pose a risk of cardiovascular side effects. Little is known of the effect of AAS on vasculature, but previous findings suggest unfavorable alterations in vessel walls and vasoreactivity. Here, long-term effect of AAS on vascular function and morphology were examined in male weightlifters, and in a mimicking animal model. Arterial elasticity and morphology were tested with ultrasound, pulse wave velocity (PWV) and carotid intima media thickness (cIMT) in 56 current male AAS users, and 67 non-exposed weightlifting controls (WLC). Female mice were treated with testosterone for 14 days and echocardiography were applied to evaluate vascular function and morphology. Male AAS users had higher PWV (p = 0.044), reduced carotid artery compliance (p = 0.0005), and increased cIMT (p = 0.041) compared to WLC. Similar functional changes were found in the ascending aorta of mice after 7- (p = 0.043) and 14 days (p = 0.001) of testosterone treatment. This animal model can be used to map molecular mechanisms responsible for complications related to AAS misuse. Considering the age-independent stiffening of major arteries and the predictive power of an increase in PWV and cIMT, the long-term users of AAS are at increased risk of severe cardiovascular events.
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Affiliation(s)
- H S Melsom
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
| | - C M Heiestad
- Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway.
| | - E Eftestøl
- Department of Biosciences, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
| | - M K Torp
- Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - K Gundersen
- Department of Biosciences, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
| | - A K Bjørnebekk
- The Anabolic Androgenic Steroid Research Group, Oslo University Hospital, Oslo, Norway
| | - P M Thorsby
- Biochemical Endocrinology and Metabolism Research Group, Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - K O Stensløkken
- Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - J Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
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18
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Djupedal H, Nøstdahl T, Hisdal J, Landsverk SA, Høiseth LØ. Effects of experimental hypovolemia and pain on pre-ejection period and pulse transit time in healthy volunteers. Physiol Rep 2022; 10:e15355. [PMID: 35748055 PMCID: PMC9226798 DOI: 10.14814/phy2.15355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/20/2022] [Accepted: 05/20/2022] [Indexed: 11/25/2022] Open
Abstract
Trauma patients may suffer significant blood loss, and noninvasive methods to diagnose hypovolemia in these patients are needed. Physiologic effects of hypovolemia, aiming to maintain blood pressure, are largely mediated by increased sympathetic nervous activity. Trauma patients may however experience pain, which also increases sympathetic nervous activity, potentially confounding measures of hypovolemia. Elucidating the common and separate effects of the two stimuli on diagnostic methods is therefore important. Lower body negative pressure (LBNP) and cold pressor test (CPT) are experimental models of central hypovolemia and pain, respectively. In the present analysis, we explored the effects of LBNP and CPT on pre‐ejection period and pulse transit time, aiming to further elucidate the potential use of these variables in diagnosing hypovolemia in trauma patients. We exposed healthy volunteers to four experimental sequences with hypovolemia (LBNP 60 mmHg) or normovolemia (LBNP 0 mmHg) and pain (CPT) or no pain (sham) in a 2 × 2 fashion. We calculated pre‐ejection period and pulse transit time from ECG and ascending aortic blood velocity (suprasternal Doppler) and continuous noninvasive arterial pressure waveform (volume‐clamp method). Fourteen subjects were available for the current analyses. This experimental study found that pre‐ejection period increased with hypovolemia and remained unaltered with pain. Pulse transit time was reduced by pain and increased with hypovolemia. Thus, the direction of change in pulse transit time has the potential to distinguish hypovolemia and pain.
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Affiliation(s)
- Håvard Djupedal
- Department of Anesthesiology, Telemark Hospital, Skien, Norway
| | | | - Jonny Hisdal
- University of Oslo, Oslo, Norway.,Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
| | - Svein Aslak Landsverk
- Department of Anesthesiology and Intensive Care, Oslo University Hospital, Oslo, Norway
| | - Lars Øivind Høiseth
- Department of Anesthesiology and Intensive Care, Oslo University Hospital, Oslo, Norway.,Norwegian Air Ambulance Foundation, Oslo, Norway
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19
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Pettersen EM, Hoel H, Torp H, Hisdal J, Seternes A. The effect of 12-week treatment with intermittent negative pressure on blood flow velocity and flowmotion, measured with a novel Doppler device (earlybird). Secondary outcomes from a randomized sham-controlled trial in patients with peripheral arterial disease. Ann Vasc Surg 2022; 86:144-157. [PMID: 35472497 DOI: 10.1016/j.avsg.2022.04.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/27/2022] [Accepted: 04/15/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Treatment with intermittent negative pressure (INP) is proposed as an adjunct to standard care in patients with peripheral arterial disease (PAD). The aims of this study were to evaluate the applicability of a novel ultrasound Doppler device (earlybird) to assess blood flow characteristics in patients with PAD during a treatment session with INP, and whether certain flow-properties could determine whom could benefit INP treatment. METHODS Secondary outcomes of data from a randomized sham-controlled trial were explored. Patients were randomized to 12 weeks of treatment with 40 mmHg or 10 mmHg INP, for one hour twice daily. Earlybird blood flow velocity recordings were made before and after the 12-week treatment-period and consists of a 5-minute recording in rest, 3-minute during INP treatment and 5-minute recording after ended INP test-treatment. Mean blood flow velocity (vmean), relative changes in flow and frequency spectrum by Fourier-transform of the respective bandwidths of endothelial, sympathetic, and myogenic functions, were analyzed for the different series of blood flow measurements. RESULTS In total, 62 patients were eligible for analysis, where 32 patients were treated with 40 mmHg INP. The acquired recordings were of good quality and was used for descriptive analyses of flow characteristics. An immediate increase in vmean during the negative pressure periods of the INP test-treatment was observed in the 40 mmHg INP treatment group at both pre- and post-test. There was a significant difference between the treatment groups, with a difference between the medians of 13.7 (p < 0.001) at pretest and 10.7 (p < 0.001) at posttest. This finding was confirmed with spectrum analysis by Fourier-transform of the bandwidth corresponding to INP treatment. The change in amplitude corresponding to myogenic function after 12 weeks of treatment, was significantly different in favor of the 40 mmHg INP treatment group. We were not able to detect specific flow characteristics indicating whom would benefit INP-treatment. CONCLUSIONS Earlybird is an applicable tool for assessing blood flow velocity in patients with PAD. Analysis of the flow velocity recordings shows that INP induce an immediate increase in blood flow velocities during INP. The positive effects of INP may be attributed to recruitment of arterioles, and thereby increasing blood flow. In these analyses no flow characteristics was determined which could predict whom would benefit INP-treatment.
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Affiliation(s)
- Erik Mulder Pettersen
- Department of circulation and medical imaging, Norwegian University of Science and Technology, Trondheim, Norway; Department of Vascular Surgery, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Surgery, Sørlandet Hospital Kristiansand, Kristiansand, Norway.
| | - Henrik Hoel
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway; Section of Vascular Investigations, Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway; Otivio AS, Oslo, Norway
| | - Hans Torp
- Department of circulation and medical imaging, Norwegian University of Science and Technology, Trondheim, Norway; CIMON Medical, NTNU Technology Transfer AS, Trondheim, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway; Section of Vascular Investigations, Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
| | - Arne Seternes
- Department of circulation and medical imaging, Norwegian University of Science and Technology, Trondheim, Norway; Department of Vascular Surgery, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway
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Safi N, Ånonsen KV, Berge ST, Medhus AW, Sundhagen JO, Hisdal J, Kazmi SSH. Early Identification of Chronic Mesenteric Ischemia with Endoscopic Duplex Ultrasound. Vasc Health Risk Manag 2022; 18:233-243. [PMID: 35431549 PMCID: PMC9005355 DOI: 10.2147/vhrm.s358570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 03/21/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Due to diagnostic delay, chronic mesenteric ischemia (CMI) is underdiagnosed. We assumed that the patients suspected of CMI of the atherosclerotic origin or median arcuate ligament syndrome (MALS) could be identified earlier with endoscopic duplex ultrasound (E-DUS). Patients and Methods Fifty CMI patients with CTA-verified stenosis of either ≥50% and ≥70% of celiac artery (CA) and superior mesenteric artery (SMA) were examined with E-DUS and transabdominal duplex ultrasound (TA-DUS). Peak systolic velocities (PSV) of ≥200cm/s and ≥275cm/s for CA and SMA, respectively, were compared with CTA. Subgroup analysis was performed for the patients with (n=21) and without (n=29) prior revascularization treatment of CMI. The diagnostic ability of E-DUS and TA-DUS was tested with crosstabulation analysis. Receiver operating characteristics (ROC) curve analysis was performed, and the area under the curve (AUC) was calculated to investigate the test accuracy. Results In the patients with ≥70% stenosis, E-DUS had higher sensitivity than TA-DUS (91% vs 81% for CA and 100% vs 92% for SMA). AUC for SMA ≥70% in E-DUS was 0.75 and with TA-DUS 0.68. The sensitivity of E-DUS for CTA-verified stenosis ≥70% for CA was 100% in the patients without prior treatment. E-DUS demonstrated higher sensitivity than TA-DUS for both arteries with stenosis ≥50% and ≥70% in the treatment-naive patients. Conclusion E-DUS is equally valid as TA-DUS for the investigation of CMI patients and should be used as an initial diagnostic tool for patients suspected of CMI.
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Affiliation(s)
- Nathkai Safi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kim Vidar Ånonsen
- Department of Gastroenterology, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Simen Tveten Berge
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Asle Wilhelm Medhus
- Department of Gastroenterology, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Jon Otto Sundhagen
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Syed Sajid Hussain Kazmi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Correspondence: Syed Sajid Hussain Kazmi, Tel +47 92468309, Email
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Kazmi SSH, Safi N, Berge ST, Kazmi M, Sundhagen JO, Hisdal J. Laparoscopic Surgery for Median Arcuate Ligament Syndrome (MALS): A Prospective Cohort of 52 Patients. Vasc Health Risk Manag 2022; 18:139-151. [PMID: 35356549 PMCID: PMC8959725 DOI: 10.2147/vhrm.s350841] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/17/2022] [Indexed: 12/23/2022] Open
Abstract
Background The selection of patients with MALS for surgical treatment depends upon the reliability of the symptom interpretation and the diagnostic work-up. We aimed to follow up the results of the laparoscopic decompression of the patients with MALS. Patients and Methods In a single-center, 52 consecutive MALS patients were followed-up, prospectively, after transperitoneal laparoscopic decompression. MALS was diagnosed with a computed tomography angiography (CTA) verified stenosis, ≥50% of the celiac artery (CA), and with duplex ultrasound, a peak systolic velocity (PSV) ≥2.0 m/s. Postoperative, CTA, and duplex ultrasound were performed, and the patients were followed-up at 3, 6, 12 months, and yearly after that. Results Mean age of the patients was 47 ±21 years, and 65% were females. The patients had a mean weight loss of 8.4 ±7.2 kg. Fifty-one patients had the laparoscopic operation with a mean operation time of 102 ± 28 minutes. Forty-seven patients (90%) achieved relief from the symptoms either completely (67%) or partially (23%) at 3–6 months of follow-up. Significant improvement in postoperative PSV was found compared to the preoperative values, p<0.001. Five patients (10%) with no immediate effect of the operation, but two of them became free from symptoms during the mean study follow-up of 2.4 ± 2 years. Five patients (10%) had operative complications, including one trocar injury to the liver, one pneumothorax, and three cases of bleeding from the branches of CA. Two patients died of cancer disease during the study period. Only two patients (4%) had symptoms relapse, both later treated successfully. Conclusion Laparoscopic transperitoneal decompression provides most of the patients a persistent relief from MALS symptoms.
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Affiliation(s)
- Syed Sajid Hussain Kazmi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Nathkai Safi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Simen Tveten Berge
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Vascular Surgery, Innlandet Hospital Trust, Hamar, Norway
| | - Marryam Kazmi
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Faculty 2, Poznan University of Medical Sciences, Poznan, Poland
| | - Jon Otto Sundhagen
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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22
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Nordén KR, Dagfinrud H, Semb AG, Hisdal J, Viktil KK, Sexton J, Fongen C, Skandsen J, Blanck T, Metsios GS, Tveter AT. Effect of high-intensity exercise on cardiorespiratory fitness, cardiovascular disease risk and disease activity in patients with inflammatory joint disease: protocol for the ExeHeart randomised controlled trial. BMJ Open 2022; 12:e058634. [PMID: 35177467 PMCID: PMC8860070 DOI: 10.1136/bmjopen-2021-058634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Inflammatory joint disease (IJD) is associated with increased risk of cardiovascular disease (CVD) fostered by systemic inflammation and a high prevalence of CVD risk factors. Cardiorespiratory fitness (CRF) is an important health parameter and CRF-measures are advocated in routine health evaluations. CRF associates with CVD risk, and exercise modalities such as high intensity interval training (HIIT) can increase CRF and mitigate CVD risk factors. In IJD, exercise is rarely used in CVD risk management and the cardioprotective effect of HIIT is unclear. Furthermore, the clinical applicability of HIIT to primary care settings is largely unknown and warrants investigation. The primary aim is to assess the effect of a HIIT programme on CRF in patients with IJD. Second, we will evaluate the effect of HIIT on CVD risk and disease activity in patients with IJD, feasibility of HIIT in primary care and validity of non-exercise algorithms to detect change in CRF. METHODS AND ANALYSIS ExeHeart is a single-blinded, randomised controlled trial. Sixty patients with IJD will be recruited from the Preventive Cardio-Rheuma clinic at Diakonhjemmet Hospital, Norway. Patients will be assigned to receive standard care (relevant lifestyle advice and cardio-preventive medication) or standard care plus a 12-week HIIT intervention by physiotherapists in primary care. HIIT sessions will be prescribed at 90%-95% of peak heart rate. Outcomes include CRF (primary outcome), CVD risk factors, anthropometric measures, disease activity and patient-reported outcomes related to pain, fatigue, disease, physical activity and exercise and will be assessed at baseline, 3 months (primary endpoint) and 6 months postbaseline. ETHICS AND DISSEMINATION Ethical approval has been obtained from the Regional Committee for Medical and Health Research Ethics (201227). Participants are required to sign a written informed consent form. Results will be discussed with patient representatives, submitted to peer-reviewed journals and presented at relevant platforms. TRIAL REGISTRATION NUMBER NCT04922840.
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Affiliation(s)
- Kristine Røren Nordén
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Hanne Dagfinrud
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Anne Grete Semb
- Preventive Cardio-Rheuma Clinic, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Jonny Hisdal
- Department of vascular surgery, University of Oslo Faculty of Medicine, Oslo, Norway
| | - Kirsten K Viktil
- Department of Pharmacy, University of Oslo, Oslo, Norway
- Diakonhjemmet Hospital Pharmacy, Diakonhjemmet Hospital, Oslo, Norway
| | - Joseph Sexton
- Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Camilla Fongen
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Jon Skandsen
- Patient advisory board, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Thalita Blanck
- Patient advisory board, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | - George S Metsios
- Department of Nutrition and Dietetics, University of Thessaly, Volos, Thessaly, Greece
| | - Anne Therese Tveter
- Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
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Witso M, Sletten OJ, Hisdal J, Melau J, Smiseth OA, Remme EW, Skulstad H. Is left ventricular function reduced after ultra-endurance exercise? Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): Norwegian Health Association
Introduction
Ultra-endurance exercise can be harmful according to previous studies, indicated by reduction in functional parameters and increase in cardiac biomarkers. Changes in load and heart rate with exercise influence left ventricle systolic function, making assessment of standard echocardiographic examination difficult.
Purpose
We investigated the effect of ultra-endurance exercise on myocardial function acutely and at restitution.
Methods
We investigated 10 participants aged 46 ±7 years, before (baseline), within 142 ± 78 minutes after finish (post run) and 5-10 days after (restitution) an ultra-endurance race (3.8 km swimming, 180 km bicycling and 42 km running with a total elevation of 5200 m). Echocardiography was performed at the three time points, including cardiac morphology and -function. Ejection fraction (EF) and stroke volume (SV) were measured by Simpson biplane. Cardiac output was calculated from SV and heart rate (HR). Cardiac power was calculated as the product of CO, mean arterial blood pressure and the conversion factor to Watt (W) 0.00222. Global longitudinal strain (GLS) was calculated using speckle-tracking echocardiography, and myocardial work was calculated by non-invasive pressure-strain analysis.
Results
Acutely after exercise, myocardial function by GLS (p = 0.002), myocardial work (p < 0.001), mitral annular plane systolic excursion (MAPSE, p = 0.003) and EF (p = 0.004) were substantially reduced compared to baseline, whereas cardiac power and cardiac output (CO) were maintained (see table and figure). Heart rate was moderately increased (p < 0.001). End-diastolic volume (EDV) as an index of preload was numerically, but not significantly reduced. End systolic volume (ESV) was numerically increased (p = NS) even though systolic blood pressure (sBP) was reduced (p = 0.01) post race. After restitution all parameters returned to baseline levels.
Conclusions
The temporary reduced strain and EF may be a physiologic response due to the higher heart rate. However, despite reduced systolic pressure the heart did not contract to a lower end systolic volume. This suggests loss of contractile function compensated by increase in heart rate. The findings should be explored in further studies. Abstract Figure Abstract Table
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Affiliation(s)
- M Witso
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - OJ Sletten
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - J Hisdal
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - J Melau
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - OA Smiseth
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - EW Remme
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - H Skulstad
- Oslo University Hospital Rikshospitalet, Oslo, Norway
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Tronstad C, Amini M, Olesen E, Qvigstad E, Pabst O, Martinsen T, Abie SM, Martinsen ØG, Hisdal J, Jenssen TG, Kalvøy H. Diabetic Foot Assessment using Skin Impedance in a Custom Made Sensor-sock. J Electr Bioimpedance 2022; 13:136-142. [PMID: 36694878 PMCID: PMC9837869 DOI: 10.2478/joeb-2022-0019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Diabetic peripheral neuropathy (DPN) may lead to several changes in the skin, and some of these may influence the skin impedance spectrum. In the present study we have developed a prototype solution for skin impedance spectroscopy at selected skin sites (big toe pulp, heel and toe ball) that was tested in a pilot study on five patients with DPN and five healthy controls. At the big toe, most of the controls had markedly lower impedance than the DPN group, especially in the range of 1-100 kHz. The separation between the groups seems to be weaker at the heel and weakest at the toeball. The results may indicate that monitoring of the skin impedance spectrum may be a method for detection of skin changes associated with DPN, encouraging further studies with the big toe sensor in particular.
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Affiliation(s)
- Christian Tronstad
- Department of Clinical and Biomedical Engineering, Oslo University Hospital, Oslo, Norway
| | - Maryam Amini
- Department of Clinical and Biomedical Engineering, Oslo University Hospital, Oslo, Norway
| | - Eline Olesen
- Department of Physics, University of Oslo, Oslo, Norway
| | - Elisabeth Qvigstad
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Oliver Pabst
- Department of Physics, University of Oslo, Oslo, Norway
| | - Tormod Martinsen
- Department of Clinical and Biomedical Engineering, Oslo University Hospital, Oslo, Norway
| | - Sisay M. Abie
- Faculty of Ecology and Natural Resource Management, Norwegian University of Life Sciences, Oslo Ås, Norway
| | - Ørjan G. Martinsen
- Department of Clinical and Biomedical Engineering, Oslo University Hospital, Oslo, Norway
- Department of Physics, University of Oslo, Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
| | - Trond G. Jenssen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
| | - Håvard Kalvøy
- Department of Clinical and Biomedical Engineering, Oslo University Hospital, Oslo, Norway
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Pettersen EM, Avdal J, Fiorentini S, Salvesen Ø, Hisdal J, Torp H, Seternes A. Validation of a novel ultrasound Doppler monitoring device (earlybird) for measurements of volume flow rate in arteriovenous fistulas for hemodialysis. J Vasc Access 2021; 24:11297298211060960. [PMID: 34852698 DOI: 10.1177/11297298211060960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Controversy exists regarding surveillance of arteriovenous fistulas for hemodialysis to increase patency. A significant reduction in volume flow rate (VFR) should lead to diagnostic evaluation and eventually intervention. Several methods are available for VFR measurements, but all of them are associated with low reproducibility. VFR trend analysis is suggested as an improved solution. It is therefore a need to find user-friendly, cost and time-effective modalities. We present a novel Doppler ultrasound device (earlybird) which could bridge this gap. It includes an easy-to-use and light-weight single element transducer. METHODS In an experimental and clinical setting, we compared earlybird to duplex ultrasound to assess VFR. In a closed circuit of blood-mimicking fluid, 36 paired calculations of calibrated, duplex ultrasound and earlybird VFR was measured. In addition, 23 paired recordings of duplex ultrasound and earlybird VFR was measured in 16 patients with underarm arteriovenous fistulas. Pearson correlation, intraclass correlation coefficient, root-mean-square and Bland-Altman plots were analyzed. RESULTS Strong correlation (r = 0.991, p < 0.001), and excellent level of agreement (ICC = 0.970 (95% CI 0.932 - 0.985), p < 0.001) between earlybird and the calibrated VFR was found in the experimental setup. This was confirmed in the clinical setting, with a strong correlation (r = 0.781, p < 0.001) and moderate to good level of agreement (ICC = 0.750 (95% CI 0.502-0.885), p < 0.001) between earlybird and duplex ultrasound VFR measured at the arteriovenous fistulas outflow veins. In the Bland-Altman plot-analysis for the experimental setup, we found smaller limits of agreement, a smaller consistent and proportional bias, as well as greater accuracy of earlybird than DUS when compared to the calibrated VFR. CONCLUSION Earlybird is a feasible tool for VFR measurements and could be a future promising device for easy assessment and surveillance of AVF for hemodialysis.
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Affiliation(s)
- Erik Mulder Pettersen
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Surgery, Sørlandet Hospital Kristiansand, Kristiansand, Norway
- Section of Vascular Surgery, Department of Surgery, Trondheim University Hospital, St. Olavs Hospital, Trondheim, Norway
| | - Jørgen Avdal
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Stefano Fiorentini
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Øyvind Salvesen
- Clinical Research Unit, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jonny Hisdal
- Section of Vascular Investigations, Division of Cardiovascular and Pulmonary Diseases, Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Hans Torp
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- CIMON Medical, NTNU Technology Transfer AS, Trondheim, Norway
| | - Arne Seternes
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- Section of Vascular Surgery, Department of Surgery, Trondheim University Hospital, St. Olavs Hospital, Trondheim, Norway
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Sletten OJ, Aalen JM, Remme EW, Khan FH, Wajdan A, Villegas M, Hisdal J, Smiseth OA, Skulstad H. Myocardial work still reflect function while strain simply measure deformation when afterload increases. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Global longitudinal strain is recommended by the European Society of Cardiology to detect subclinical left ventricular (LV) dysfunction, but is markedly load-dependent. Myocardial work was recently introduced as a clinical tool to study LV function by pressure-strain analysis. Since myocardial work incorporates afterload, it is assumed to be less afterload-dependent than strain, but the relationship with afterload is incompletely understood.
Hypothesis
Myocardial work is a better tool than strain, to measure myocardial function during elevated afterload.
Methods
In eleven anesthetized dogs, LV volume and longitudinal strain were measured by sonomicrometry, and pressure by micromanometry. Myocardial work was calculated by pressure-strain analysis. Additionally, stroke work was calculated as the area of the pressure-volume loop. Afterload was instantly increased by aortic constriction using a pneumatic cuff around the ascending aorta. Measurements were performed at baseline, during moderate- and marked afterload elevations.
Results
Table 1 summarizes the results. LV pressure (LVP) successively increased with moderate and marked afterload elevation, while longitudinal strain was successively reduced. Myocardial work and stroke work, on the other hand, increased with moderate afterload elevation, but was then reduced at marked afterload increase (Figure 1 and Table 1). Stroke volume and ejection fraction corresponded to strain and were reduced with afterload elevation.
Conclusions
Longitudinal strain and myocardial work have qualitatively different responses to increased afterload. While moderate changes in afterload cause reductions in strain that can be falsely interpreted as reductions in contractility, myocardial work increases as it incorporates the increased workload at moderately elevated afterload.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): The Norwegian Health Association
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Affiliation(s)
- O J Sletten
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - J M Aalen
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - E W Remme
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - F H Khan
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - A Wajdan
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - M Villegas
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - J Hisdal
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - O A Smiseth
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - H Skulstad
- Oslo University Hospital Rikshospitalet, Oslo, Norway
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Hoel H, Pettersen EM, Høiseth LØ, Mathiesen I, Seternes A, Seljeflot I, Hisdal J. Effects of intermittent negative pressure treatment on circulating vascular biomarkers in patients with intermittent claudication. Vasc Med 2021; 26:489-496. [PMID: 33985385 PMCID: PMC8493410 DOI: 10.1177/1358863x211007933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The aim of this study was to investigate the effects of lower extremity intermittent negative pressure (INP) treatment for 1 hour twice daily for 12 weeks, on circulating vascular biomarkers in patients with intermittent claudication. Patients were randomized to treatment with -40 mmHg INP (treatment group), or -10 mmHg INP (sham control group). Venous blood samples were collected at baseline and after 12 weeks, and concentrations of vascular adhesion molecule-1 (VCAM-1), intracellular adhesion molecule-1 (ICAM-1), E-selectin, P-selectin, von Willebrand factor (vWF), l-arginine, asymmetric dimethylarginine (ADMA), and symmetric dimethylarginine (SDMA) were analyzed. A larger proportion of the patients in the treatment group (25/31) had a reduction in vWF levels after 12 weeks, compared to the sham control group (17/30) (p = 0.043). Within the treatment group there was a significant mean (SEM) reduction in the concentration of vWF of -11% (4) (p = 0.019), whereas there was no significant change in the levels of vWF in the sham control group (1% (6); p = 0.85). There were no significant differences in the change of any of the biomarker levels between the groups after 12 weeks of treatment. In conclusion, there were no differences in the change of the circulating levels of the measured biomarkers between the treatment group and the sham control group after 12 weeks of INP treatment. However, the observed changes in vWF might indicate a beneficial effect of INP treatment on endothelial activation and endothelial injury. Clinicaltrials.gov Identifier: NCT03640676.
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Affiliation(s)
- Henrik Hoel
- Institute of Clinical Medicine, Faculty
of Medicine, University of Oslo, Oslo, Norway
- Department of Vascular Surgery, Oslo
University Hospital, Oslo, Norway
- Otivio AS, Oslo, Norway
| | - Erik Mulder Pettersen
- Department of Surgery, Sørlandet
Hospital, Kristiansand, Norway
- Department of Circulation and Medical
Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science
and Technology, Trondheim, Norway
| | | | | | - Arne Seternes
- Department of Circulation and Medical
Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science
and Technology, Trondheim, Norway
- Department of Surgery, Section for
Vascular Surgery, St Olavs Hospital, Trondheim, Norway
| | - Ingebjørg Seljeflot
- Institute of Clinical Medicine, Faculty
of Medicine, University of Oslo, Oslo, Norway
- Department of Cardiology, Center for
Clinical Heart Research, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty
of Medicine, University of Oslo, Oslo, Norway
- Department of Vascular Surgery, Oslo
University Hospital, Oslo, Norway
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Johnsen L, Hisdal J, Jonung T, Braaten A, Pedersen G. Three-dimensional Ultrasound Volume and Conventional Ultrasound Diameter Changes are Equally Good Markers of Endoleak in Follow-up after Endovascular Aneurysm Repair. J Vasc Surg 2021; 75:1030-1037.e1. [PMID: 34606959 DOI: 10.1016/j.jvs.2021.08.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 08/29/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION The main disadvantages of computed tomography angiography in follow-up after endovascular aneurysm repair are the risks of contrast-induced renal impairment and radiation-induced cancer. Three-dimensional ultrasound is a new technique for volume estimation of the aneurysm sac. Some studies have reported promising results. The aim of this study was to evaluate the accuracy and precision of three-dimensional ultrasound aneurysm sac-volume estimates, and to explore whether volume and/or diameter changes on ultrasound can be used as markers of endoleak. METHODS A single-center diagnostic accuracy study was performed. 92 Patients planned for endovascular aneurysm repair were prospectively and consecutively enrolled (2013-2016). Aneurysm sac diameter and volume were measured using computed tomography angiography, conventional ultrasound, and three-dimensional ultrasound preoperatively and 1, 6, 12, and 24 months postoperatively. Three-dimensional ultrasound was performed with a commercially available electromechanical transducer. Patients with endoleak were observed 5 years after endovascular aneurysm repair. RESULTS 79 men and 13 women were included. Mean age was 74 years (57-92). Median follow-up was 24 months. Endoleak cases were observed for up to 55 months. Diameter measurements on conventional ultrasound correlated well with CT diameters (r = 0.9, P < 0.05, n = 347), and Bland-Altman analyses showed an upper limit of agreement of +0.5 cm and a lower limit of agreement of -0.8 cm. The mean difference was -0.13 cm ± 0.36 cm. Three-dimensional ultrasound volumes had a correlation with computed tomography angiography diameters of r = 0.8 (P < 0.05, n = 347) and with three-dimensional computed tomography volumes of r = 0.8 (P < 0.05, n = 155). Receiver operating characteristic analyses showed that the diameter and volume changes which led to reintervention were most accurate at 24-month follow-up, with area-under-the-curve percentage changes of 0.98 (two-dimensional ultrasound), 0.97 (three-dimensional ultrasound), and 0.97 (two-dimensional computed tomography). DISCUSSION Both diameter and volume changes can be used as markers for endoleak with excellent areas under the curve on receiver operating characteristic analyses. However, three-dimensional ultrasound volumes did not add any further diagnostic information. Conventional 2D diameter measurements were as accurate as volume changes as markers of endoleak. CONCLUSION Type II endoleaks can safely be followed up using a simple diameter measurement on conventional ultrasound.
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Affiliation(s)
- L Johnsen
- Haukeland University Hospital; University of Bergen; Norwegian University of Science and Technology.
| | - J Hisdal
- Norwegian University of Science and Technology; Oslo University Hospital; University of Oslo
| | | | | | - G Pedersen
- Haukeland University Hospital; University of Bergen
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29
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Nyborg C, Bonnevie-Svendsen M, Melsom HS, Melau J, Seljeflot I, Hisdal J. Reduced L-Arginine and L-Arginine-ADMA-Ratio, and Increased SDMA after Norseman Xtreme Triathlon. Sports (Basel) 2021; 9:sports9090120. [PMID: 34564325 PMCID: PMC8472968 DOI: 10.3390/sports9090120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/28/2021] [Accepted: 08/26/2021] [Indexed: 12/13/2022] Open
Abstract
Endothelial vasodilatory function is dependent on the NO synthesis from L-arginine by endothelial NO-synthetase (eNOS). eNOS can be inhibited by asymmetric dimethylarginine (ADMA) by competitive inhibition on the binding site, and symmetric dimethylarginine (SDMA) can reduce the L-arginine availability intracellularly through competing for transport over the cellular membrane. To study the NO synthesis after prolonged exercise, we assessed circulatory L-arginine, the L-arginine/ADMA ratio, and SDMA before, after, and on the day after the Norseman Xtreme triathlon, an Ironman distance triathlon. We found significantly reduced levels of L-arginine and the L-arginine/ADMA ratio and increased levels of SDMA after the race (all p < 0.05). L-arginine rose toward baseline levels the day after the race, but ADMA increased beyond baseline levels, and SDMA remained above baseline the day after the race. The reduced levels of L-arginine and the L-arginine/ADMA ratio, and increased SDMA, after the race indicate a state of reduced capability of NO production. Increased levels of ADMA and SDMA, and reduced L-arginine/ADMA ratio, as seen the day after the race, are known risk markers of atherosclerosis and warrant further studies.
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Affiliation(s)
- Christoffer Nyborg
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (M.B.-S.); (H.S.M.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
- Correspondence: ; Tel.: +47-971-76-129
| | - Martin Bonnevie-Svendsen
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (M.B.-S.); (H.S.M.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
| | - Helene Støle Melsom
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (M.B.-S.); (H.S.M.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
| | - Jørgen Melau
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (M.B.-S.); (H.S.M.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
- Department of Prehospital Care, Vestfold Hospital Trust, 3103 Toensberg, Norway
| | - Ingebjørg Seljeflot
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (M.B.-S.); (H.S.M.); (J.M.); (I.S.); (J.H.)
- Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital, 0424 Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (M.B.-S.); (H.S.M.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
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30
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Nyborg C, Melsom HS, Bonnevie-Svendsen M, Melau J, Seljeflot I, Hisdal J. Transient Reduction of FMD-Response and L-Arginine Accompanied by Increased Levels of E-Selectin, VCAM, and ICAM after Prolonged Strenuous Exercise. Sports (Basel) 2021; 9:sports9060086. [PMID: 34204566 PMCID: PMC8234080 DOI: 10.3390/sports9060086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 01/22/2023] Open
Abstract
We assessed endothelial function by flow-mediated dilatation (FMD), levels of the NO-precursor L-arginine, and markers of endothelial inflammation before, at the finish line, and one week after the Norseman Xtreme triathlon. The race is an Ironman distance triathlon with a total elevation of 5200 m. Nine male participants were included. They completed the race in 14.5 (13.4–15.3) h. FMD was significantly reduced to 3.1 (2.1–5.0)% dilatation compared to 8.7 (8.2–9.3)% dilatation before the race (p < 0.05) and was normalized one week after the race. L-arginine showed significantly reduced levels at the finish line (p < 0.05) but was normalized one week after the race. Markers of endothelial inflammation E-Selectin, VCAM-1, and ICAM-1 all showed a pattern with increased values at the finish line compared to before the race (all p < 0.05), with normalization one week after the race. In conclusion, we found acutely reduced FMD with reduced L-arginine levels and increased E-Selectin, VCAM-1, and ICAM-1 immediately after the Norseman Xtreme triathlon. Our findings indicate a transient reduced endothelial function, measured by the FMD-response, after prolonged strenuous exercise that could be explained by reduced NO-precursor L-arginine levels and increased endothelial inflammation.
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Affiliation(s)
- Christoffer Nyborg
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (H.S.M.); (M.B.-S.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
- Correspondence: ; Tel.: +47-971-76-129
| | - Helene Støle Melsom
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (H.S.M.); (M.B.-S.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
| | - Martin Bonnevie-Svendsen
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (H.S.M.); (M.B.-S.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
| | - Jørgen Melau
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (H.S.M.); (M.B.-S.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
- Department of Prehospital Care, Vestfold Hospital Trust, 3103 Toensberg, Norway
| | - Ingebjørg Seljeflot
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (H.S.M.); (M.B.-S.); (J.M.); (I.S.); (J.H.)
- Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital, 0424 Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway; (H.S.M.); (M.B.-S.); (J.M.); (I.S.); (J.H.)
- Department of Vascular Surgery, Oslo University Hospital, 0424 Oslo, Norway
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Föhse FK, Rollefstad S, Ikdahl E, Wibetoe G, Sexton J, Hisdal J, Semb AG. Degree of arterial stiffness is comparable across inflammatory joint disease entities. Scand J Rheumatol 2021; 51:186-195. [PMID: 34132621 DOI: 10.1080/03009742.2021.1920169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Objectives: Inflammatory joint disease (IJD) is associated with an increased risk of developing cardiovascular disease (CVD). Arterial stiffness is both a risk factor and a surrogate marker for CVD. This study aims to compare arterial stiffness across patients with rheumatoid arthritis, ankylosing spondylitis, and psoriatic arthritis, and, by extension, to explore the relationship between arterial stiffness and the estimated CVD risk by the Systematic COronary Risk Evaluation (SCORE) algorithm.Method: During the study period, from April 2017 to June 2018, 196 patients with IJD visited the Preventive Cardio-Rheuma Clinic in Oslo, Norway. A CVD risk stratification was performed, including the assessment of traditional risk factors and the measurement of arterial stiffness.Results: Thirty-six patients (18.4%) had elevated aortic pulse wave velocity (aPWV) (≥ 10 m/s). After adjustment for age and heart rate, arterial stiffness was comparable across the IJD entities (p = 0.69). Associated factors, revealed by regression analysis, were age, blood pressure, heart rate, presence of carotid plaques, establis hed CVD, non-steroidal anti-inflammatory drugs, and statin use. Furthermore, aPWV was positively correlated with estimated CVD risk (r = 0.7, p < 0.001) and patients with a very high predicted CVD risk (SCORE ≥ 10%) had significantly higher aPWV than patients at lower CVD risk (9.2 vs 7.5 m/s, p < 0.001).Conclusion: The degree of arterial stiffness was comparable across the IJD entities and was highly associated with the estimated CVD risk. Our findings support the need for an increased focus on prevention of CVD in all patients with IJD.
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Affiliation(s)
- F K Föhse
- Department of Vascular Surgery, Oslo University Hospital-Aker, Oslo, Norway.,Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - S Rollefstad
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
| | - E Ikdahl
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
| | - G Wibetoe
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
| | - J Sexton
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
| | - J Hisdal
- Department of Vascular Surgery, Oslo University Hospital-Aker, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - A G Semb
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
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32
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Lie SL, Hisdal J, Høiseth LØ. Cerebral blood flow velocity during simultaneous changes in mean arterial pressure and cardiac output in healthy volunteers. Eur J Appl Physiol 2021; 121:2207-2217. [PMID: 33890157 PMCID: PMC8260418 DOI: 10.1007/s00421-021-04693-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 04/15/2021] [Indexed: 02/03/2023]
Abstract
Purpose Cerebral blood flow (CBF) needs to be precisely controlled to maintain brain functions. While previously believed to be autoregulated and near constant over a wide blood pressure range, CBF is now understood as more pressure passive. However, there are still questions regarding the integrated nature of CBF regulation and more specifically the role of cardiac output. Our aim was, therefore, to explore the effects of MAP and cardiac output on CBF in a combined model of reduced preload and increased afterload. Method 16 healthy volunteers were exposed to combinations of different levels of simultaneous lower body negative pressure and isometric hand grip. We measured blood velocity in the middle cerebral artery (MCAV) and internal carotid artery (ICAV) by Doppler ultrasound, and cerebral oxygen saturation (ScO2) by near-infrared spectroscopy, as surrogates for CBF. The effect of changes in MAP and cardiac output on CBF was estimated with mixed multiple regression. Result Both MAP and cardiac output had independent effects on MCAV, ICAV and ScO2. For ICAV and ScO2 there was also a statistically significant interaction effect between MAP and cardiac output. The estimated effect of a change of 10 mmHg in MAP on MCAV was 3.11 cm/s (95% CI 2.51–3.71, P < 0.001), and the effect of a change of 1 L/min in cardiac output was 3.41 cm/s (95% CI 2.82–4.00, P < 0.001). Conclusion The present study indicates that during reductions in cardiac output, both MAP and cardiac output have independent effects on CBF. Supplementary Information The online version contains supplementary material available at 10.1007/s00421-021-04693-6.
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Affiliation(s)
- Sole Lindvåg Lie
- Faculty of Medicine, University of Oslo, Oslo, Norway. .,Section of Vascular Investigations, Department of Vascular Surgery, Oslo University Hospital, 0424, Oslo, Norway.
| | - Jonny Hisdal
- Faculty of Medicine, University of Oslo, Oslo, Norway.,Section of Vascular Investigations, Department of Vascular Surgery, Oslo University Hospital, 0424, Oslo, Norway
| | - Lars Øivind Høiseth
- Department of Anesthesiology, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
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33
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Affiliation(s)
- Henrik Hoel
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway.,Otivio AS, Oslo, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
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Sletten OJ, Aalen JM, Remme EW, Khan FH, Hisdal J, Smiseth OA, Skulstad H. Myocardial work comes to rescue when afterload-dependency of strain cause false positives. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public Institution(s). Main funding source(s): The Norwegian Health Association
Introduction
Global longitudinal strain (GLS) can detect subclinical left ventricular (LV) dysfunction. GLS measurement is therefore recommended when chemotherapy-induced cardiotoxicity can be suspected. A relative, percentage reduction in GLS ≥8% may indicate subclinical LV dysfunction induced by chemotherapy. Due to afterload-dependency, moderate increase in blood pressure has the potential to cause reductions in GLS beyond this threshold. However, myocardial work incorporates afterload, and may be used to omit false positive outcomes.
Purpose
To investigate if moderate increases in afterload cause clinically relevant changes in strain, and if myocardial work is more robust to such changes.
Methods
Twenty cancer patients (41 ± 14 years) undergoing chemotherapy and twenty healthy controls (49 ± 11 years, NS) were included. All participants were free from concomitant heart disease. GLS was measured by speckle-tracking echocardiography. Global myocardial work was calculated by pressure-strain analysis using a previously validated method to estimate LV pressure (LVP) non-invasively. Recordings were performed before and after 2 minute stress by handgrip.
Results
At baseline, patients had lower GLS (20.1 ± 1.1 vs 22.1 ± 2.5%, p < 0.01) and global myocardial work (1810 ± 203 vs 2051 ± 287 mmHg·%, p < 0.01) than controls. Stress test moderately increased systolic blood pressure, similar in both groups (116 ± 10 to 146 ± 17 mmHg in patients, and 118 ± 12 to 147 ± 21 mmHg in controls). This afterload-enhancement was associated with a decrease in GLS from 20.1 ± 1.1 to 18.4 ± 1.3% in patients, and from 22.1 ± 2.5 to 20.3 ± 2.5% in controls (both p < 0.01). Every second participant, eleven patients and nine controls, experienced a relative reduction in GLS >8%. In contrast, global myocardial work increased during the stress test from 1810 ± 203 to 2002 ± 281 mmHg·% in patients, and from 2051 ± 287 to 2292 ± 398 mmHg·% in controls (both p < 0.01). Figure 1 shows changes in GLS and myocardial work at moderate increase in afterload.
Conclusions
Moderate increase in afterload caused reductions in GLS sufficient to promote over-diagnosis of chemotherapy-induced cardiotoxicity. Global myocardial work has the potential to distinguish true subclinical LV dysfunction from afterload-induced decline in GLS.
Abstract Figure.
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Affiliation(s)
- OJ Sletten
- Oslo University Hospital Rikshospitalet, Department of Cardiology, Oslo, Norway
| | - JM Aalen
- Oslo University Hospital Rikshospitalet, Department of Cardiology, Oslo, Norway
| | - EW Remme
- Oslo University Hospital Rikshospitalet, Department of Cardiology, Oslo, Norway
| | - FH Khan
- Oslo University Hospital Rikshospitalet, Department of Cardiology, Oslo, Norway
| | - J Hisdal
- Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - OA Smiseth
- Oslo University Hospital Rikshospitalet, Department of Cardiology, Oslo, Norway
| | - H Skulstad
- Oslo University Hospital Rikshospitalet, Department of Cardiology, Oslo, Norway
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Melau J, Hisdal J, Solberg PA. Impact of a 10,000-m Cold-Water Swim on Norwegian Naval Special Forces Recruits. J Spec Oper Med 2021; 21:55-59. [PMID: 34529806 DOI: 10.55460/qe23-511p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Special Operation Forces (SOF) operate regularly in extreme environmental conditions that may affect tactical and physical performance. The main aims of the present study were to elucidate the impact of a long cold-water swim on SOF recruits' dexterity, performance, and reaction time. MATERIAL AND METHODS Eleven recruits from Norwegian Naval Special Operation Command (NORNAVSOC) that were participating in a 10,000-m open water swim with a dry suit in 5°C cold water volunteered to participate in this study. The exercise was part of their training. Grip strength, lower body power, and dexterity were measured before, immediately after, and 24 hours after the swim. In addition, core and skin temperatures were measured continuously during the swim and until 45 minutes after the swim. RESULTS After the swim, moderate to large reductions in core temperature, lower body power, and reaction time were observed. Moreover, very large to extremely large reductions in skin temperature, grip strength, and dexterity were also observed. CONCLUSION These results demonstrate that exposure to a 10,000-m swim in 5°C water using standard equipment led to a significant drop in the recruits' temperature and performance. These findings could have a meaningful impact on the planning of training, operations, and gear used for SOF.
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Wiegerinck AIP, Thomsen A, Hisdal J, Kalvøy H, Tronstad C. Electrical Impedance Plethysmography Versus Tonometry To Measure the Pulse Wave Velocity in Peripheral Arteries in Young Healthy Volunteers: a Pilot Study. J Electr Bioimpedance 2021; 12:169-177. [PMID: 35111272 PMCID: PMC8776312 DOI: 10.2478/joeb-2021-0020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The leading cause of health loss and deaths worldwide are cardiovascular diseases. A predictor of cardiovascular diseases and events is the arterial stiffness. The pulse wave velocity (PWV) can be used to estimate arterial stiffness non-invasively. The tonometer is considered as the gold standard for measuring PWV. This approach requires manual probe fixation above the artery and depends on the skills of the operator. Electrical impedance plethysmography (IPG) is an interesting alternative using skin surface sensing electrodes, that is miniaturizable, cost-effective and allows measurement of deeper arteries. The aim of this pilot study was to explore if IPG can be a suitable technique to measure pulse wave velocity in legs as an alternative for the tonometer technique. The PWV was estimated by differences in the ECG-gated pulse arrival times (PAT) at the a. femoralis, a. popliteal, a. tibialis dorsalis and a. dorsalis pedis in nine healthy young adults using IPG and the SphygmoCor tonometer as a reference. The estimated PWV results from bioimpedance and the tonometer were fairly in agreement, and the beat-to-beat variability in PAT was similar. This pilot study indicates that the use of IPG may be a good alternative for estimating PWV in the legs.
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Affiliation(s)
- A. I. P. Wiegerinck
- Department of Physiology, Radboud University Medical Center, Nijmegen, Netherlands
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - A. Thomsen
- Department of Physics, University of Oslo, Oslo, Norway
| | - J. Hisdal
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - H. Kalvøy
- Department of Clinical & Biomedical Engineering, Oslo University Hospital, Oslo, Norway
| | - C. Tronstad
- Department of Clinical & Biomedical Engineering, Oslo University Hospital, Oslo, Norway
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Lund T, Svindland A, Bay D, Sundhagen JO, Hisdal J, Flørenes T. Histological Analysis of a Long Term Patent Subintimal Canal in the Superficial Femoral Artery. EJVES Vasc Forum 2020; 50:19-23. [PMID: 33511376 PMCID: PMC7815991 DOI: 10.1016/j.ejvsvf.2020.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 12/01/2020] [Accepted: 12/22/2020] [Indexed: 11/30/2022] Open
Abstract
Introduction Subintimal angioplasty (SIA) was introduced in the late 1980s and is a supplement to bypass surgery. Adaptation of the technique has been hampered by high rates of early intervention to maintain patency, but the long term assisted patency is good. Report The superficial femoral and popliteal artery containing a patent subintimal canal were explanted from a patient who died in the authors' ward. Histological analysis indicated that the lumen was created in the medial layer of the vessel wall. A collagen rich neointima and fragmented internal elastic lamina were observed, presumably as a result of activated smooth muscle cells. The luminal surface was partly covered by a single layer of CD31, von Willebrand factor, and partly CD144 positive cells. An early atherosclerotic lesion was observed distally in the subintimal canal. Discussion Remodelling and neo-cellularisation of the vascular wall after SIA are described. Notably, hallmarks of early and late stage atherosclerotic disease were evident throughout the subintimal canal. These observations require confirmation in a larger number of specimens but underscore the need for surveillance after SIA.
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Affiliation(s)
- Tormod Lund
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
| | - Aud Svindland
- Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Pathology, Oslo University Hospital, Oslo, Norway
| | - Dag Bay
- Division of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
| | - Jon O Sundhagen
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Tor Flørenes
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
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Stens NA, Hisdal J, Bakke EF, Kaur N, Sharma A, Stranden E, Thijssen DHJ, Høiseth LØ. Factors mediating the pressor response to isometric muscle contraction: An experimental study in healthy volunteers during lower body negative pressure. PLoS One 2020; 15:e0243627. [PMID: 33296410 PMCID: PMC7725372 DOI: 10.1371/journal.pone.0243627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/24/2020] [Indexed: 12/20/2022] Open
Abstract
Whilst both cardiac output (CO) and total peripheral resistance (TPR) determine mean arterial blood pressure (MAP), their relative importance in the pressor response to isometric exercise remains unclear. This study aimed to elucidate the relative importance of these two different factors by examining pressor responses during cardiopulmonary unloading leading to step-wise reductions in CO. Hemodynamics were investigated in 11 healthy individuals before, during and after two-minute isometric exercise during lower body negative pressure (LBNP; -20mmHg and -40mmHg). The blood pressure response to isometric exercise was similar during normal and reduced preload, despite a step-wise reduction in CO during LBNP (-20mmHg and -40mmHg). During -20mmHg LBNP, the decreased stroke volume, and consequently CO, was counteracted by an increased TPR, while heart rate (HR) was unaffected. HR was increased during -40 mmHg LBNP, although insufficient to maintain CO; the drop in CO was perfectly compensated by an increased TPR to maintain MAP. Likewise, transient application of LBNP (-20mmHg and -40mmHg) resulted in a short transient drop in MAP, caused by a decrease in CO, which was compensated by an increase in TPR. This study suggests that, in case of reductions of CO, changes in TPR are primarily responsible for maintaining the pressor response during isometric exercise. This highlights the relative importance of TPR compared to CO in mediating the pressor response during isometric exercise.
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Affiliation(s)
- Niels A. Stens
- Department of Physiology, Research Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Espen F. Bakke
- Institute of Aviation Medicine, Norwegian Armed Forces Medical Service, Oslo, Norway
| | - Narinder Kaur
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
- Dermatology Center Telemark, Porsgrunn, Norway
| | - Archana Sharma
- Department of Endocrinology, Oslo University Hospital, Oslo, Norway
- Department of Anesthesiology, Oslo University Hospital, Oslo, Norway
| | - Einar Stranden
- Department of Vascular Surgery, Division of Cardiovascular and Pulmonary Diseases, Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Dick H. J. Thijssen
- Department of Physiology, Research Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Lars Øivind Høiseth
- Department of Anesthesiology, Oslo University Hospital, Oslo, Norway
- * E-mail:
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Elstad T, Ulleberg P, Klonteig S, Hisdal J, Dyrdal GM, Bjorndal A. The effects of yoga on student mental health: a randomised controlled trial. Health Psychol Behav Med 2020; 8:573-586. [PMID: 34040886 PMCID: PMC8114365 DOI: 10.1080/21642850.2020.1843466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 10/24/2020] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Universities around the world are facing an epidemic of mental distress among their students. The problem is truly a public health issue, affecting many and with serious consequences. The global burden of disease-agenda calls for effective interventions with lasting effects that have the potential to improve the mental health of young adults. In this study we aimed to determine whether yoga, a popular and widely available mind-body practice, can improve student mental health. METHODS We performed a randomised controlled trial with 202 healthy university students in the Oslo area. The participants were assigned to a yoga group or waitlist control group in a 1:1 ratio by a simple online randomisation program. The intervention group was offered 24 yoga sessions over 12 weeks. Measurements were taken at week 0 (baseline), week 12 (post-intervention), and week 24 (follow-up). The primary outcome was psychological distress assessed by the HSCL-25 questionnaire. Analysis was performed based on the intention to treat-principle. RESULTS Between 24 January 2017, and 27 August 2017, we randomly assigned 202 students to a yoga intervention group (n = 100), or waitlist control group (n = 102). Compared with the control group, the yoga participants demonstrated a significant reduction in distress symptoms both at post-intervention (adjusted difference in the mean change -0.15, 95% CI -0.26 to -0.03, p = 0.0110) and follow-up (adjusted difference in the mean change -0.18, 95% CI -0.29 to -0.06, p = 0.0025). Sleep quality also improved at post-intervention and follow-up. No adverse events were reported. CONCLUSIONS Our findings suggest that yoga has a moderately large and lasting effect, at least for some months, reducing symptoms of distress and improving sleep quality among students. Further research should seek ways to enhance the effect, assess an even longer follow-up period, include active control groups, and consider performing similar studies in other cultural settings.Trial registration: ClinicalTrials.gov identifier: NCT04258540.
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Affiliation(s)
- Tiril Elstad
- Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Pål Ulleberg
- Department of Psychology, University of Oslo, Oslo, Norway
| | | | - Jonny Hisdal
- Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | - Arild Bjorndal
- Regional Centre for Child and Adolescent Mental Health in Eastern and Southern Norway (RBUP) & University of Oslo, Oslo, Norway
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Nyborg C, Melau J, Bonnevie-Svendsen M, Mathiasen M, Melsom HS, Storsve AB, Hisdal J. Biochemical markers after the Norseman Extreme Triathlon. PLoS One 2020; 15:e0239158. [PMID: 32966338 PMCID: PMC7510962 DOI: 10.1371/journal.pone.0239158] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 08/31/2020] [Indexed: 01/04/2023] Open
Abstract
Prolonged exercise is known to cause changes in common biomarkers. Occasionally, competition athletes need medical assistance and hospitalisation during prolonged exercise events. To aid clinicians treating patients and medical teams in such events we have studied common biomarkers after at The Norseman Xtreme Triathlon (Norseman), an Ironman distance triathlon with an accumulated climb of 5200 m, and an Olympic triathlon for comparison. Blood samples were collected before, immediately after, and the day following the Norseman Xtreme Triatlon (n = 98) and Oslo Olympic Triathlon (n = 15). Increased levels of clinical significance were seen at the finish line of the Norseman in white blood cells count (WBC) (14.2 [13.5–14.9] 109/L, p < 0.001), creatinine kinase (CK) (2450 [1620–3950] U/L, p < 0.001) and NT-proBNP (576 [331–856] ng/L, p < 0.001). The following day there were clinically significant changes in CRP (39 [27–56] mg/L, p < 0.001) and Aspartate Aminotransferase (AST) (142 [99–191] U/L, p < 0.001). In comparison, after the Olympic triathlon distance, there were statistically significant, but less clinically important, changes in WBC (7.8 [6.7–9.6] 109/L, p < 0.001), CK (303 [182–393] U/L, p < 0.001) and NT-proBNP (77 [49–88] ng/L, p < 0.01) immediately after the race, and in CRP (2 [1–3] mg/L, p < 0.001) and AST (31 [26–41] U/L, p < 0.01) the following day. Subclinical changes were also observed in Hemoglobin, Thrombocytes, K+, Ca2+, Mg2+, Creatinine, Alanine Aminotransferase and Thyroxine after the Norseman. In conclusion, there were significant changes in biomarkers used in a clinical setting after the Norseman. Of largest clinical importance were clinically significant increased WBC, CRP, AST, CK and NT-proBNP after the Norseman. This is important to be aware of when athletes engaging in prolonged exercise events receive medical assistance or are hospitalised.
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Affiliation(s)
- Christoffer Nyborg
- Faculty of medicine, Department of Clinical medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Aker, Norway
- * E-mail:
| | - Jørgen Melau
- Faculty of medicine, Department of Clinical medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Aker, Norway
- Prehospital Division, Vestfold Hospital Trust, Tønsberg, Norway
| | | | - Maria Mathiasen
- Department of Cardiology, Telemark Hospital Trust, Notodden, Norway
| | - Helene Støle Melsom
- Faculty of medicine, Department of Clinical medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Aker, Norway
| | | | - Jonny Hisdal
- Faculty of medicine, Department of Clinical medicine, University of Oslo, Oslo, Norway
- Section of Vascular Investigations, Oslo University Hospital, Aker, Norway
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Storsve AB, Johnsen L, Nyborg C, Melau J, Hisdal J, Burri L. Effects of Krill Oil and Race Distance on Serum Choline and Choline Metabolites in Triathletes: A Field Study. Front Nutr 2020; 7:133. [PMID: 33015116 PMCID: PMC7461811 DOI: 10.3389/fnut.2020.00133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/10/2020] [Indexed: 12/18/2022] Open
Abstract
Choline is an essential nutrient that has been implicated in athletic performance due to its role in maintaining normal muscle function. The concentration of free choline in serum may decrease during long-distance high-intensity exercise, yet few nutritional strategies to counteract this potentially performance-depleting loss in choline have been investigated outside the laboratory. This exploratory field study was performed to investigate if pre-race supplementation with phosphatidylcholine from krill oil can counteract the expected drop in choline and some of its metabolites during triathlon competitions. Forty-seven triathletes, 12 females and 35 males ranging in age from 25 to 61 years, were recruited from participants in the Ironman-distance Norseman Xtreme triathlon and the Sprint/Olympic-distance Oslo Triathlon. Twenty-four athletes were randomly allocated to the krill oil group, receiving 4 g of SuperbaBoost™ krill oil daily for 5 weeks prior to the race, and 23 athletes were randomly allocated to the placebo group, receiving 4 g of mixed vegetable oil daily. Blood samples were obtained before the race, immediately after completion of the race, and the day after the race for analysis of choline and its metabolites. The results showed that serum choline concentrations significantly decreased from pre-race to race finish in all races, with a more pronounced decrease observed in the Ironman-distance Norseman Xtreme triathlon (34% decrease) relative to the Sprint/Olympic-distance Oslo Triathlon (15% decrease). A reduction in betaine was also observed, while dimethylglycine (DMG) concentrations remained stable across all time points. Significantly higher concentrations of choline (9.4% on average) and DMG (21.4% on average) were observed in the krill oil compared to the placebo group, and the krill oil group showed a significantly greater increase in serum choline following race completion. In conclusion, krill oil may help to prevent that circulating choline concentrations become limiting during endurance competitions.
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Affiliation(s)
| | | | - Christoffer Nyborg
- Department of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Jørgen Melau
- Department of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Prehospital Division, Vestfold Hospital Trust, Tønsberg, Norway
| | - Jonny Hisdal
- Department of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Lena Burri
- Aker BioMarine Antarctic AS, Lysaker, Norway
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42
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Berge ST, Safi N, Medhus AW, Sundhagen JO, Hisdal J, Kazmi SSH. Perioperative Microcirculatory Changes Detected with Gastroscopy Assisted Laser Doppler Flowmetry and Visible Light Spectroscopy in Patients with Median Arcuate Ligament Syndrome. Vasc Health Risk Manag 2020; 16:331-341. [PMID: 32982262 PMCID: PMC7493022 DOI: 10.2147/vhrm.s252192] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/20/2020] [Indexed: 12/31/2022] Open
Abstract
Purpose Physiological tests may aid in diagnosing median arcuate ligament syndrome (MALS). MALS is a symptomatic compression of the celiac artery causing symptoms similar to chronic mesenteric ischemia (CMI) of atherosclerotic etiology. Simultaneous use of visible light spectroscopy (VLS) and laser doppler flowmetry (LDF) during upper endoscopy may detect microcirculatory changes in these patients. Patients and Methods In a single-center, prospective comparative cohort, 25 patients were evaluated for MALS. Patients with a consensus diagnosis of MALS (n=15) underwent a gastroscopy assisted, transmucosal microcirculatory assessment with LDF and VLS. Results were compared to individuals with normal intestinal circulation (n=38) evaluated with duplex ultrasonography, and to patients with chronic mesenteric ischemia (n=32). Treatment response was evaluated clinically at 1, 3, 6, and 12 months, and with ultrasound, VLS and LDF at three months. Health-related quality of life (QoL) was assessed with Euroqol (EQ-5D-5L), preoperatively, and 12 months postoperatively. Results Preoperative mean transmucosal oxygen saturation was significantly lower in patients with MALS (SO2 76±6), as compared to healthy individuals (SO2 81±4), p=0.02. An overall significant improvement in SO2 after surgical decompression of the celiac artery was found (SO2 81±3.7, p=0.05). Eleven (92%) patients with clinical improvement after laparoscopic decompression had a definitive diagnosis of MALS. Median follow-up was 18 months (4–24 months). Four of the five dimensions investigated with EQ-5D-5L improved. Conclusion VLS detected a significantly lower baseline transmucosal SO2 in patients with MALS as compared to control subjects with normal intestinal circulation. An improvement in SO2 after laparoscopic decompression was found, supporting a possible ischemic etiology in our patient population.
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Affiliation(s)
- Simen Tveten Berge
- Department of Vascular Surgery, Oslo University Hospital HF, Oslo, Norway
| | - Nathkai Safi
- Faculty of Medicine, University in Oslo, Oslo, Norway
| | - Asle W Medhus
- Department of Gastroenterology, Oslo University Hospital HF, Oslo, Norway
| | - Jon O Sundhagen
- Department of Vascular Surgery, Oslo University Hospital HF, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Oslo University Hospital HF, Oslo, Norway.,Faculty of Medicine, University in Oslo, Oslo, Norway
| | - Syed S H Kazmi
- Department of Vascular Surgery, Oslo University Hospital HF, Oslo, Norway.,Faculty of Medicine, University in Oslo, Oslo, Norway
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43
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Amini M, Niemi E, Hisdal J, Kalvøy H, Tronstad C, Scholz H, Rosales A, Martinsen ØG. Monitoring the quality of frozen-thawed venous segments using bioimpedance spectroscopy. Physiol Meas 2020; 41:044008. [PMID: 32235072 DOI: 10.1088/1361-6579/ab85b7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Storage at temperatures as low as -80 °C and below (cryopreservation) is considered a method for long-term preservation of cells and tissues, and especially blood vessel segments, which are to be used for clinical operations such as transplantation. However, the freezing and thawing processes themselves can induce injuries to the cells and tissue by damaging the structure and consequently functionality of the cryopreserved tissue. In addition, the level of damage is dependent on the rate of cooling and warming used during the freezing-thawing process. Current methods for monitoring the viability and integrity of cells and tissues after going through the freezing-thawing cycle are usually invasive and destructive to the cells and tissues. Therefore, employing monitoring methods which are not destructive to the cryopreserved tissues, such as bioimpedance measurement techniques, is necessary. In this study we aimed to design a bioimpedance measurement setup to detect changes in venous segments after freezing-thawing cycles in a noninvasive manner. APPROACH A bioimpedance spectroscopy measurement technique with a two-electrode setup was employed to monitor ovine jugular vein segments after each cycle during a process of seven freezing-thawing cycles. MAIN RESULTS The results demonstrated changes in the impedance spectra of the measured venous segments after each freezing-thawing cycle. SIGNIFICANCE This indicates that bioimpedance spectroscopy has the potential to be developed into a novel method for non-invasive and non-destructive monitoring of the viability of complex tissue after cryopreservation.
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Affiliation(s)
- M Amini
- Department of Physics, University of Oslo, Oslo, Norway
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44
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Stensrud T, Rossvoll Ø, Mathiassen M, Melau J, Illidi C, Østgaard HN, Hisdal J, Stang J. Lung function and oxygen saturation after participation in Norseman Xtreme Triathlon. Scand J Med Sci Sports 2020; 30:1008-1016. [PMID: 32153035 DOI: 10.1111/sms.13651] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 02/29/2020] [Accepted: 03/02/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To examine evidence of exercise-induced bronchoconstriction (EIB) defined as ≥10% reduction in forced expiratory volume in one second (FEV1 ) and exercise-induced arterial hypoxemia (EIAH) defined as ≥4% reduction in oxygen saturation (SpO2 ) from before to after participation in the Norseman Xtreme Triathlon. Secondarily, to assess whether changes in FEV1 and SpO2 are related to respiratory symptoms, training volume, and race time. METHODS In this quasi-experimental non-controlled study, we included 63 triathletes (50♂/13♀) aged 40.3 (±9.0) years (mean ± SD). Fifty-seven (46♂/11♀) measured lung function and 54 (44♂/10♀) measured SpO2 before the race, 8-10 minutes after the race (post-test 1) and the day after the race (post-test 2). Respiratory symptoms and training volume were recorded with modified AQUA questionnaire. ANOVA for repeated measures was used to detect differences in lung function and SpO2 . Statistical significance was accepted at 0.05 level. RESULTS Twenty-six participants (46%) presented with EIB at post-test 1 and 16 (28%) at post-test 2. Lung function variables were significantly reduced from baseline to post-test 1 and 2. Thirty-five participants (65%) showed evidence of mild to moderate EIAH. No significant correlations were observed except a weak correlation between maximal reduction in FEV1 and respiratory symptoms (r = 0.35, P = .016). CONCLUSION Our results demonstrated that 46% of the participants presented with EIB and 65% showed evidence of EIAH after the Norseman Xtreme Triathlon. Changes in FEV1 and SpO2 were not correlated to weekly training hours or race time. We observed a weak correlation between maximal reduction in FEV1 and respiratory symptoms.
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Affiliation(s)
- Trine Stensrud
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Øyvind Rossvoll
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | | | - Jørgen Melau
- Prehospital Division, Vestfold Hospital Trust, Tønsberg, Norway
| | - Camilla Illidi
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway.,Centre of Health, Exercise and Performance, College of health & Life Sciences, Brunel University, London, UK
| | - Hege N Østgaard
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Jonny Hisdal
- Department of vascular surgery, Oslo University Hospital, Oslo, Norway.,Department of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Julie Stang
- Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
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45
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Sletten OJ, Aalen J, Khan FH, Larsen CK, Inoue K, Remme EW, Hisdal J, Smiseth OA, Skulstad H. 158 Myocardial work exposes afterload-dependent changes in strain. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Norwegian Health Association
Background
Global longitudinal strain (GLS) is used for detection of subclinical left ventricular (LV) dysfunction, for example when screening for chemotherapy-induced cardiotoxicity. A relative percentage reduction in GLS ≥8% is considered abnormal. However, as GLS is load-dependent, modest increases in afterload can potentially prove sufficient to cause clinical implication. In contrast, global myocardial work (GMW) which incorporates afterload, may be more accurate in detecting LV-dysfunction.
Purpose
We investigated the effect of increased afterload on GLS, and if GMW may be a more accurate parameter of myocardial function during increased afterload.
Methods
In 20 healthy individuals (age 49 ± 11 years (mean ± SD), 10 men), blood pressure was increased by a 3 minute arithmetic mental stress test. GLS was measured by speckle tracking echocardiography and LV ejection fraction (EF) by biplane Simpson. GMW was calculated from LV pressure-strain analysis using a non-invasive estimate for LV pressure (LVP).
Results
During the afterload-elevation, systolic blood pressure increased by 25 ± 16 mmHg (p < 0.01), and heart rate by 16 ± 13 bpm (p < 0.01). This was followed by a decrease in EF from 62 ± 5 to 59 ± 5% (p < 0.01) and GLS from 21.9 ± 2.2 to 20.8 ± 2.0% (p < 0.01). In contrast, GMW increased from 2052 ± 278 to 2382 ± 388 mmHg·% (p < 0.01). In 5 of 20 (25%) individuals, the relative percentage reduction of GLS was >8%, despite an increase in GMW. The figure shows an individual example during rest and afterload-elevation, where an increase in systolic blood pressure of 16 mmHg was associated with a 9% relative percentage reduction in GLS, but a small increase in GMW as illustrated by the loop areas.
Conclusions
This study demonstrated that a modest increase in afterload can result in significant reduction in GLS, that may lead to overdiagnosis of LV-dysfunction. GMW did not decrease, suggesting it has a better specificity in patients at risk for subclinical LV dysfunction. Future studies should investigate if GMW is more accurate than strain in detecting LV-dysfunction.
Abstract 158 Figure.
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Affiliation(s)
- O J Sletten
- Institute for Surgical Research and Center for Cardiological Innovation, Department of Cardiology, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - J Aalen
- Institute for Surgical Research and Center for Cardiological Innovation, Department of Cardiology, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - F H Khan
- Institute for Surgical Research and Center for Cardiological Innovation, Department of Cardiology, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - C K Larsen
- Institute for Surgical Research and Center for Cardiological Innovation, Department of Cardiology, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - K Inoue
- Institute for Surgical Research, Oslo, Norway. Ehime University Graduate School of Medicine, Deptartment of Cardiology, Pulmonology, Hypertension and Nephrology, Ehime, Japan
| | - E W Remme
- Institute for Surgical Research and Center for Cardiological Innovation, Department of Cardiology, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - J Hisdal
- Institute for Surgical Research, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - O A Smiseth
- Institute for Surgical Research and Center for Cardiological Innovation, Department of Cardiology, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - H Skulstad
- Institute for Surgical Research and Center for Cardiological Innovation, Department of Cardiology, University of Oslo, Oslo University Hospital, Oslo, Norway
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Valsdottir TD, Henriksen C, Odden N, Nellemann B, Jeppesen PB, Hisdal J, Westerberg AC, Jensen J. Effect of a Low-Carbohydrate High-Fat Diet and a Single Bout of Exercise on Glucose Tolerance, Lipid Profile and Endothelial Function in Normal Weight Young Healthy Females. Front Physiol 2019; 10:1499. [PMID: 31920704 PMCID: PMC6931312 DOI: 10.3389/fphys.2019.01499] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 11/25/2019] [Indexed: 01/07/2023] Open
Abstract
Low-carbohydrate-high-fat (LCHF) diets are efficient for weight loss, and are also used by healthy people to maintain bodyweight. The main aim of this study was to investigate the effect of 3-week energy-balanced LCHF-diet, with >75 percentage energy (E%) from fat, on glucose tolerance and lipid profile in normal weight, young, healthy women. The second aim of the study was to investigate if a bout of exercise would prevent any negative effect of LCHF-diet on glucose tolerance. Seventeen females participated, age 23.5 ± 0.5 years; body mass index 21.0 ± 0.4 kg/m2, with a mean dietary intake of 78 ± 1 E% fat, 19 ± 1 E% protein and 3 ± 0 E% carbohydrates. Measurements were performed at baseline and post-intervention. Fasting glucose decreased from 4.7 ± 0.1 to 4.4 mmol/L (p < 0.001) during the dietary intervention whereas fasting insulin was unaffected. Glucose area under the curve (AUC) and insulin AUC did not change during an OGTT after the intervention. Before the intervention, a bout of aerobic exercise reduced fasting glucose (4.4 ± 0.1 mmol/L, p < 0.001) and glucose AUC (739 ± 41 to 661 ± 25, p = 0.008) during OGTT the following morning. After the intervention, exercise did not reduce fasting glucose the following morning, and glucose AUC during an OGTT increased compared to the day before (789 ± 43 to 889 ± 40 mmol/L∙120min–1, p = 0.001). AUC for insulin was unaffected. The dietary intervention increased total cholesterol (p < 0.001), low-density lipoprotein (p ≤ 0.001), high-density lipoprotein (p = 0.011), triglycerides (p = 0.035), and free fatty acids (p = 0.021). In conclusion, 3-week LCHF-diet reduced fasting glucose, while glucose tolerance was unaffected. A bout of exercise post-intervention did not decrease AUC glucose as it did at baseline. Total cholesterol increased, mainly due to increments in low-density lipoprotein. LCHF-diets should be further evaluated and carefully considered for healthy individuals.
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Affiliation(s)
- Thorhildur Ditta Valsdottir
- Department of Medicine, Atlantis Medical University College, Oslo, Norway.,Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
| | - Christine Henriksen
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Nancy Odden
- Department of Nutrition, Atlantis Medical University College, Oslo, Norway
| | - Birgitte Nellemann
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
| | - Per B Jeppesen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jonny Hisdal
- Oslo Vascular Center, Department of Vascular Surgery, Oslo University Hospital, Oslo, Norway
| | - Ane C Westerberg
- Department of Nutrition, Atlantis Medical University College, Oslo, Norway.,Institute of Health Sciences, Kristiania University College, Oslo, Norway
| | - Jørgen Jensen
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
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Svanteson M, Rollefstad S, Kløw NE, Hisdal J, Ikdahl E, Sexton J, Haig Y, Semb AG. Effects of long-term statin-treatment on coronary atherosclerosis in patients with inflammatory joint diseases. PLoS One 2019; 14:e0226479. [PMID: 31830762 PMCID: PMC6908439 DOI: 10.1371/journal.pone.0226479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 11/26/2019] [Indexed: 12/04/2022] Open
Abstract
Background The effect of statins over time on coronary atherosclerosis in patients with inflammatory joint diseases (IJD) is unknown. Our aim was to evaluate the change in coronary plaque morphology and volume in long-term statin-treated patients with IJD. Methods Sixty-eight patients with IJD and carotid artery plaque(s) underwent coronary computed tomography angiography before and after a mean of 4.7 (range 4.0–6.0) years of statin treatment. The treatment target for low density lipoprotein cholesterol (LDL-c) was ≤1.8 mmol/L. Changes in plaque volume (calcified, mixed/soft and total) and coronary artery calcification (CAC) from baseline to follow-up were assessed using the 17-segment American Heart Association-model. Results Median (IQR) increase in CAC after statin treatment was 38 (5–236) Agatston units (p<0.001). Calcified and total plaque volume increased with 5.6 (0.0–49.1) and 2.9 (0.0–23.5) mm3, respectively (p<0.001 for both). The median (IQR) change in soft/mixed plaque volume was -10 (-7.1–0.0), p = <0.001. Patients who had obtained the LDL-c treatment target at follow-up, experienced reduced progression of both CAC and total plaque volume compared to patients with LDL-c >1.8mmol/L (21 [2–143] vs. 69 [16–423], p = 0.006 and 0.65 [-1.0–13.9] vs. 13.0 [0.0–60.8] mm3, p = 0.019, respectively). Conclusions A progression of total atherosclerotic plaque volume in statin-treated patients with IJD was observed. However, soft/mixed plaque volume was reduced, suggesting an alteration in plaque composition. Patients with recommended LDL-c levels at follow-up had reduced atherosclerotic progression compared to patients with LDL-c levels above the treatment target, suggesting a beneficial effect of treatment to guideline-recommended lipid targets in IJD patients.
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Affiliation(s)
- Mona Svanteson
- Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- * E-mail:
| | - Silvia Rollefstad
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
| | - Nils-Einar Kløw
- Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Jonny Hisdal
- Department of Vascular Investigations, Oslo University Hospital, Aker, Oslo, Norway
| | - Eirik Ikdahl
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
| | - Joseph Sexton
- Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
| | - Ylva Haig
- Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
| | - Anne Grete Semb
- Preventive Cardio-Rheuma Clinic, Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway
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Johnsen L, Hisdal J, Jonung T, Braaten AO, Laxdal EH, Kjosnes T, Pedersen G. Contrast Enhanced Ultrasound Detects Endoleak after EVAR. Eur J Vasc Endovasc Surg 2019. [DOI: 10.1016/j.ejvs.2019.06.536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pettersen EM, Avdal J, Hisdal J, Torp H, Seternes A. Validation of a novel ultrasound Doppler monitoring device (earlybird) for detection of microvascular circulatory changes. Clin Hemorheol Microcirc 2019; 74:429-440. [PMID: 31743988 DOI: 10.3233/ch-190707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE In this proof-of-concept study we aim to validate a novel ultrasound Doppler monitoring device for evaluating microcirculation (earlybird) against LDF and pulsed Doppler. METHODS In ten healthy subjects, we measured microcirculatory function at rest and during different autonomic tests (forced respiration, isometric exercise, Valsalva maneuver and cold pressor). Earlybird, LDF and pulsed Doppler were recorded simultaneously. We performed a ZNCC to determine correlation. RESULTS The curves for earlybird and LDF or pulsed Doppler correlates visually well. Overall median ZNCC 0.87 (interquartile range 0.77 -0.91) between the LDF and earlybird measurements, and 0.90 (0.82 - 0.95) for pulsed Doppler and earlybird. Median ZNCC for baseline and each provocation test for earlybird against LDF and pulsed Doppler were calculated; baseline: LDF 0.87 (0.73 - 0.97) pulsed Doppler 0.91 (0.81 - 0.94), forced respiration: LDF 0.87 (0.28 - 0.90) pulsed Doppler 0.90 (0.85 - 0.96), isometric exercise: LDF 0.82 (0.59 - 0.90) pulsed Doppler 0.87 (0.68 - 0.94), Valsalva maneuver: LDF 0.88 (0.82 - 0.91) pulsed Doppler 0.94 (0.92 - 0.97) and cold pressor: LDF 0.90 (0.85 - 0.95) pulsed Doppler 0.89 (0.65 - 0.94). CONCLUSION Earlybird records vasoconstrictions in healthy subjects as well as LDF and pulsed Doppler.
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Affiliation(s)
- Erik Mulder Pettersen
- Department of Surgery, Sørlandet Sykehus Kristiansand, Kristiansand, Norway.,Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jørgen Avdal
- Department of Circulation and Medical Imaging, CIUS/NTNU/St. Olavs Hospital, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jonny Hisdal
- Department of Vascular Surgery, Section of Vascular Investigations, Division of Cardiovascular and Pulmonary Diseases, Oslo University Hospital, Oslo, Norway
| | - Hans Torp
- Department of Circulation and Medical Imaging, CIUS/NTNU/St. Olavs Hospital, Norwegian University of Science and Technology, Trondheim, Norway
| | - Arne Seternes
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Vascular Surgery, St. Olavs Hospital, Trondheim, Norway
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Gundersen KM, Nyborg C, Heiberg Sundby Ø, Hisdal J. Correction: The effects of sympathetic activity induced by ice water on blood flow and brachial artery flow-mediated dilatation response in healthy volunteers. PLoS One 2019; 14:e0223798. [PMID: 31589657 PMCID: PMC6779226 DOI: 10.1371/journal.pone.0223798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0219814.].
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