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Nussinovitch U, Barak-Lanciano S, Shavit I, Avivi I, Haber-Kaptsenel E, Palacci H, Chaiat C, Rubinshtein R. Normal baseline cardiac autonomic function and increased pupillary parasympathetic tone in patients with vasovagal syncope. Clin Physiol Funct Imaging 2024. [PMID: 38678442 DOI: 10.1111/cpf.12884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 04/08/2024] [Accepted: 04/11/2024] [Indexed: 04/30/2024]
Abstract
It is controversial whether people with vasovagal syncope (VVS) have abnormal autonomic responses at baseline and whether specific diagnostic manoeuvres have a diagnostic value. We investigated whether the pupillary light reflex and cardiac autonomic tests can be used to identify autonomic dysfunction in volunteers with a medical history of VVS. The study groups included 128 healthy volunteers, of whom 31 reported a history of typical VVS. The right pupil was evaluated using an automated, commercial infra-red pupillometer under strict conditions. In addition to miosis and mydriasis kinetics, pupil diameters were measured. Heart rate variability at rest and heart rate changes to standing were quantified with high-resolution electrocardiography and designated software. The demographic and clinical characteristics of both groups were statistically similar. Average constriction velocity (ACV) was significantly higher in VVS patients following a univariate analysis (3.83 ± 0.59 vs. 3.56 ± 0.73 mm/s, p = 0.042) and after correcting for potential confounders (p = 0.049). All other pupillometric and heart rate indices were comparable between groups. Patients with a history of VVS depict pupillary parasympathetic overactivity in response to light stimuli, manifested as increased ACV. The prognostic implications of this finding and the significance of using this simple clinical tool to identify patients who are at risk for developing frequent episodes of VVS or physical injuries following a syncope merits further study.
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Affiliation(s)
- Udi Nussinovitch
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Heart Institute at the Edith Wolfson Medical Center, Holon, Israel
| | | | - Itay Shavit
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ishay Avivi
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Hagar Palacci
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Chen Chaiat
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ronen Rubinshtein
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Heart Institute at the Edith Wolfson Medical Center, Holon, Israel
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2
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Nakagawa S, Shima H, Sakurai Y. Meteorological factors associated with the occurrence of the vasovagal reflex during blood donation. Transfus Clin Biol 2024:S1246-7820(24)00055-7. [PMID: 38604405 DOI: 10.1016/j.tracli.2024.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/04/2024] [Accepted: 04/04/2024] [Indexed: 04/13/2024]
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van Zanten S, Sutton R, Hamrefors V, Fedorowski A, de Lange FJ. Tilt table testing, methodology and practical insights for the clinic. Clin Physiol Funct Imaging 2024; 44:119-130. [PMID: 37839043 DOI: 10.1111/cpf.12859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/18/2023] [Accepted: 10/04/2023] [Indexed: 10/17/2023]
Abstract
Tilt table testing (TTT) has been used for decades to study short-term blood pressure (BP) and heart rate regulation during orthostatic challenges. TTT provokes vasovagal reflex in many syncope patients as a background of widespread use. Despite the availability of evidence-based practice syncope guidelines, proper application and interpretation of TTT in the day-to-day care of syncope patients remain challenging. In this review, we offer practical information on what is needed to perform TTT, how results should be interpreted including the Vasovagal Syncope International Study classification, why syncope induction on TTT is necessary in patients with unexplained syncope and on indications for TTT in syncope patient care. The minimum requirements to perform TTT are a tilt table with an appropriate tilt-down time, a continuous beat-to-beat BP monitor with at least three electrocardiogram leads and trained staff. We emphasize that TTT remains a valuable asset that adds to history building but cannot replace it, and highlight the importance of recognition when TTT is abnormal even without syncope. Acknowledgement by the patient/eyewitness of the reproducibility of the induced attack is mandatory in concluding a diagnosis. TTT may be indicated when the initial syncope evaluation does not yield a certain, highly likely, or possible diagnosis, but raises clinical suspicion of (1) reflex syncope, (2) orthostatic hypotension (OH), (3) postural orthostatic tachycardia syndrome or (4) psychogenic pseudosyncope. A therapeutic indication for TTT in the patient with a certain, highly likely or possible diagnosis of reflex syncope, may be to educate patients on prodromes. In patients with reflex syncope with OH TTT can be therapeutic to recognize hypotensive symptoms causing near-syncope to perform physical countermanoeuvres for syncope prevention (biofeedback). Detection of hypotensive susceptibility requiring therapy is of special value.
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Affiliation(s)
- Steven van Zanten
- Department of Cardiology, Reinier de Graaf Gasthuis, Delft, The Netherlands
| | - Richard Sutton
- Department of Cardiology, National Heart and Lung Institute, Imperial College London, Hammersmith Hospital Campus, London, UK
- Department of Clinical Sciences, Lund University, Malmö, Sweden
- Department of Cardiology, Skåne University Hospital, Malmö, Sweden
| | - Viktor Hamrefors
- Department of Clinical Sciences, Lund University, Malmö, Sweden
- Department of Cardiology, Skåne University Hospital, Malmö, Sweden
| | - Artur Fedorowski
- Department of Clinical Sciences, Lund University, Malmö, Sweden
- Department of Cardiology, Skåne University Hospital, Malmö, Sweden
- Department of Cardiology, Karolinska University Hospital and Karolinska Institute, Stockholm, Sweden
| | - Frederik J de Lange
- Department of Clinical and Experimental Cardiology, Heart Centre, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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Russo V, Tomaino M, Parente E, Comune A, Giacopelli D, Napoli P, Gargaro A, Brignole M. Temporal relationship between haemodynamic changes and activation of closed-loop stimulation during a tilt-induced vasovagal syncope. Europace 2024; 26:euae045. [PMID: 38340330 PMCID: PMC10886438 DOI: 10.1093/europace/euae045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/06/2024] [Indexed: 02/12/2024] Open
Abstract
AIMS A dual-chamber pacemaker with closed-loop stimulation (CLS) mode is effective in reducing syncopal recurrences in patients with asystolic vasovagal syncope (VVS). In this study, we explored the haemodynamic and temporal relationship of CLS during a tilt-induced vasovagal reflex. METHODS AND RESULTS Twenty patients underwent a tilt test under video recording 3.9 years after CLS pacemaker implantation. Three patients were excluded from the analysis because of no VVS induced by the tilt test (n = 1) and protocol violation (n = 2). In 14 of the remaining 17 patients, CLS pacing emerged during the pre-syncopal phase of circulatory instability when the mean intrinsic heart rate (HR) was 88 ± 12 b.p.m. and systolic blood pressure (SBP) was 108 ± 19 mmHg. The CLS pacing rate thereafter rapidly increased to 105 ± 14 b.p.m. within a median of 0.1 min [inter-quartile range (IQR), 0.1-0.7 min] when the SBP was 99 ± 21 mmHg. At the time of maximum vasovagal effect (syncope or pre-syncope), SBP was 63 ± 17 mmHg and the CLS rate was 95 ± 13 b.p.m. The onset of CLS pacing was 1.7 min (IQR, 1.5-3.4) before syncope or lowest SBP. The total duration of CLS pacing was 5.0 min (IQR, 3.3-8.3). Closed-loop stimulation pacing was not observed in three patients who had a similar SBP decrease from 142 ± 22 mmHg at baseline to 69 ± 4 mmHg at the time of maximum vasovagal effect, but there was no significant increase in HR (59 ± 1 b.p.m.). CONCLUSION The reproducibility of a vasovagal reflex was high. High-rate CLS pacing was observed early during the pre-syncopal phase in most patients and persisted, although attenuated, at the time of maximum vasovagal effect. REGISTRATION ClinicalTrials.gov identifier: NCT06038708.
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Affiliation(s)
- Vincenzo Russo
- Cardiology and Syncope Unit, Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’—Monaldi Hospital, 80126 Naples, Italy
| | - Marco Tomaino
- Department of Cardiology, Ospedale Generale Regionale, Bolzano, Italy
| | - Erika Parente
- Cardiology and Syncope Unit, Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’—Monaldi Hospital, 80126 Naples, Italy
| | - Angelo Comune
- Cardiology and Syncope Unit, Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’—Monaldi Hospital, 80126 Naples, Italy
| | | | - Paola Napoli
- Research Clinical Unit, Biotronik Italy, Milan, Italy
| | | | - Michele Brignole
- IRCCS Istituto Auxologico Italiano, Faint and Fall Research Centre, Department of Cardiology, S. Luca Hospital, Piazzale Brescia 20, 20149 Milan, Italy
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Li J, Sun W, Yang X, Tu B, Cai S, Hu F, Weng Z, Liu S, Lai Z, Zheng L, Yao Y. Characteristics of deceleration capacity and deceleration runs in vasovagal syncope. Clin Auton Res 2024; 34:143-151. [PMID: 37776375 DOI: 10.1007/s10286-023-00989-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 09/19/2023] [Indexed: 10/02/2023]
Abstract
PURPOSE Increased vagal activity plays a prominent role in vasovagal syncope (VVS). The aim of this study was to characterize vagal function in VVS by evaluating the heart rate (HR) deceleration capacity (DC) and the HR deceleration runs (DRs) in patients with VVS between attacks. METHODS A total of 188 consecutive VVS patients were enrolled in the study, of whom 129 had positive head-up tilt test (HUTT); 132 healthy participants were enrolled as controls. DC, DRs (DR2, i.e., episodes of 2 consecutive beat-to-beat HR decelerations), and the sum of DR8-10 (very long DR [VLDR]) were calculated using 24-h electrograms. Clinical characteristics, DC, and DRs were compared among syncope groups and controls. RESULTS Patients with VVS had higher DC (10.63 ± 2.1 vs. 6.58 ± 1.7 ms; P < 0.001) and lower minimum HR and DR6-10 than controls. No significant differences in DC or DR6-10 were found between the patients with positive and those with negative HUTT results. In multivariate logistic regression analysis, minimum HR ≥ 40 bpm (odds ratio [OR] 0.408, 95% confidence interval [CI] 0.167-0.989; P = 0.048), daytime DC ≥ 7.37 ms (OR 3.040, 95% CI 1.220-7.576; P = 0.013), and VLDR ≥ 0.046% (OR 0.306, 95% CI 0.138-0.679; P = 0.004) were demonstrated to be risk factors significantly associated with VVS. CONCLUSION Compared to healthy controls, patients with VVS demonstrated distinct HR deceleration profiles between attacks, including overall higher DC and lower DR6-10.
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Affiliation(s)
- Jiakun Li
- Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, National Key Laboratory, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Sun
- Cardiology department, Eastern Health-Box Hill Hospital, Melbourne, Australia
| | - Xu Yang
- Premium Care Center, Fuwai Hospital, National Center for Cardiovascular Diseases, National Key Laboratory, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Tu
- Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, National Key Laboratory, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Simin Cai
- Cardiac Arrhythmia Center, Huazhong Fuwai Hospital, Heart Center, Henan Provincial People's Hospital, The People's Hospital of Zhengzhou University, Henan, China
| | - Feng Hu
- Department of Cardiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Zhiyuan Weng
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Fuzhou, 350005, China
| | - Shangyu Liu
- Department of Cardiovasology, The First Hospital of Hebei Medical University, No. 89 Donggang Road, Yuhua District, Shijiazhuang, 050031, Hebei, China
| | - Zihao Lai
- Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, National Key Laboratory, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lihui Zheng
- Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, National Key Laboratory, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Yan Yao
- Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, National Key Laboratory, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Jardine DL. What lies beneath: cyclical giant bursts of SNA during vasovagal syncope. Clin Auton Res 2024; 34:213-217. [PMID: 38308177 DOI: 10.1007/s10286-023-01009-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/09/2023] [Indexed: 02/04/2024]
Affiliation(s)
- D L Jardine
- Departments of Medicine and General Medicine, Christchurch Hospital, 2, Riccarton Ave, Christchurch, 4710, New Zealand.
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van Rossum IA, de Lange FJ, Benditt DG, van Zwet EW, van Houwelingen M, Thijs RD, van Dijk JG. Variability of cardioinhibition in vasovagal syncope: differences between subgroups during cardioinhibition and beyond. Clin Auton Res 2023; 33:749-755. [PMID: 37874434 PMCID: PMC10751252 DOI: 10.1007/s10286-023-00991-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/30/2023] [Indexed: 10/25/2023]
Abstract
PURPOSE We compared hemodynamic parameters between subjects with marked, intermediate and minimal cardioinhibition during vasovagal syncope. METHODS The study included subjects with a decrease in heart rate while experiencing a complete vasovagal syncope during tilt-table testing. The subjects were classified as having marked, intermediate or minimal cardioinhibition, based on tertile values of the decrease in heart rate. Hemodynamic parameters between these groups were compared before tilt in the supine position, shortly after tilt and during cardioinhibition. RESULTS A total of 149 subjects with a median age of 43 (interquartile range 24-60) years were included in the study. Among the three groups with different levels of cardioinhibition, the highest heart rate was observed in subjects with marked cardioinhibition both before and shortly after tilt and at the start of cardioinhibition. The heart rate decrease in these subjects was both larger and faster compared to subjects with minimal and intermediate cardioinhibition. CONCLUSION Subjects with marked cardioinhibition have both a larger and faster decrease in heart rate compared to subjects with intermediate and minimal cardioinhibition, as early as from the start of cardioinhibition. Marked cardioinhibition is related to differences in hemodynamic profiles already present well before the start of cardioinhibition.
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Affiliation(s)
- Ineke A van Rossum
- Department of Neurology, Leiden University Medical Centre, PO Box 9600, 2300, Leiden, The Netherlands.
| | - Frederik J de Lange
- Heart Centre, Department of Clinical and Experimental Cardiology, Amsterdam UMC, University of Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - David G Benditt
- Cardiac Arrhythmia Center, Cardiovascular Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Erik W van Zwet
- Department of Medical Statistics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Marc van Houwelingen
- Department of Experimental Cardiology, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Roland D Thijs
- Department of Neurology, Leiden University Medical Centre, PO Box 9600, 2300, Leiden, The Netherlands
- Stichting Epilepsie Instellingen Nederland (SEIN), Heemstede, The Netherlands
| | - J Gert van Dijk
- Department of Neurology, Leiden University Medical Centre, PO Box 9600, 2300, Leiden, The Netherlands
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Johnson NE, Burma JS, Seok J, Miutz LN, Smirl JD. Influence of sex on the reliability of cerebral blood velocity regulation during lower body negative pressure and supine cycling with considerations of the menstrual cycle. Physiol Meas 2023; 44:114001. [PMID: 37848016 DOI: 10.1088/1361-6579/ad0425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 10/17/2023] [Indexed: 10/19/2023]
Abstract
Objective.To evaluate sex differences in the reliability of absolute and relative cerebral blood velocity (CBv) during concurrent supine cycling with lower body negative pressure (LBNP).Approach. A total of 19 participants (11 females; aged 20-33 years) completed five testing sessions, occurring on 7 d intervals. Visit 1 was a maximal-ramp-cycle test to ascertain peak CBv wattage. During visits 2-5, supine cycling protocol occurred at individualized peak CBv wattages with progressive decreases in LBNP from 0 to -20, -40, -60, -70, and -80 Torr. Menstrual cycle day was self-reported via the Rhinessa Women's Questionnaire. Transcranial Doppler ultrasound insonated bilateral middle cerebral artery velocity (MCAv). Two-way ANOVA assessed potential day- and sex-differences at each LBNP stage. Reliability was determined using intraclass correlation coefficients (ICC) and coefficient of variation (CoV).Main results. For all physiological measures, no main-effects were present for day- or interaction-terms (p> 0.067; negligible-to-small effect sizes), while sex differences were noted for MCAv, blood pressure, and heart rate (p< 0.046). Across visits, males and females displayed excellent and good-to-excellent levels of reliability for MCAv metrics, respectively (ICC range: 0.745-0.999; CoV range: 0.33%-9.90%).Significance. During the current investigation, both relative and absolute CBv demonstrated high reliability in both male and female participants during a supine LBNP cycling protocol. An exploratory analysis revealed increased variance was found in female participants dependent on contraceptive use. Despite this, results indicate future LBNP studies may include females at any menstrual cycle stage.
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Affiliation(s)
- Nathan E Johnson
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Alberta, Canada
| | - Joel S Burma
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
| | - Jina Seok
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Alberta, Canada
| | - Lauren N Miutz
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Department of Health and Sport Science, University of Dayton, Dayton, OH, United States of America
| | - Jonathan D Smirl
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
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Redondo J, Conte LM, Seda G. Vasovagal Electrophysiology on 12-Lead ECG After Venipuncture. Mil Med 2023; 188:3680-3682. [PMID: 35762141 DOI: 10.1093/milmed/usac178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/30/2022] [Accepted: 06/04/2022] [Indexed: 11/14/2022] Open
Abstract
Vasovagal syncope is the most common form of syncope seen in young and otherwise healthy active duty service members. Although self-limiting, syncopal events often produce a significant drain of medical resources because of their sudden and often dramatic presentation, which can be associated with traumatic injuries secondary to loss in postural tone. Malignant differential pathologies associated with syncopal presentation need to be ruled out, which in turn further diminishes resources, especially in a deployed environment that is often in austere, remote locations with a lack of readily available medical supplies. We present a case of vasovagal syncope experienced by a 20-year-old sailor shortly after venipuncture and the 12-lead electrocardiogram captured shortly after presentation. This case highlights the unique electrophysiology during a vasovagal episode and the impact a relatively benign condition has on medical operations in the operational setting.
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Affiliation(s)
- Jose Redondo
- U.S. Military Carrier Air Wing Seventeen, Naval Medical Center San Diego, San Diego, CA 92134, USA
| | - Lisa M Conte
- Department of Cardiology, Walter Reed Military Medical Center, Bethesda, MD 20814, USA
| | - Gilbert Seda
- Intensive Care Unit, Scripps Mercy Chula Vista, Chula Vista, CA 91910, USA
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10
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Cui YX, Du JB, Jin HF. Baroreflex sensitivity and its implication in neurally mediated syncope in children. World J Pediatr 2023; 19:1023-1029. [PMID: 37014537 DOI: 10.1007/s12519-023-00693-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 01/20/2023] [Indexed: 04/05/2023]
Affiliation(s)
- Ya-Xi Cui
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China
| | - Jun-Bao Du
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China
- Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, 100191, China
| | - Hong-Fang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China.
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Golovin DA, Rostovtseva TM, Kudryavtsev YS, Berdalin AB, Lelyuk SE, Lelyuk VG. Carotid Dolichoarteriopathy (Elongation) of the Carotid Arteries in Patients with Ischemic Stroke Anamnesis. Biomedicines 2023; 11:2751. [PMID: 37893124 PMCID: PMC10604229 DOI: 10.3390/biomedicines11102751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 10/29/2023] Open
Abstract
Carotid artery elongation (ECA) is widespread in the asymptomatic population and among people with a history of ischemic stroke (IS). There are different points of view on the ways these changes contribute to brain ischemic damage pathogenesis. Materials and Methods: From 2019 to 2021, we included 1171 people who had suffered from IS less than one year before the investigation in the study, 404 (34.5%) women aged 27 to 95 years (64 ± 13 years) and 767 men (21-90; 60 ± 11 years). All patients involved in the study underwent multimodal radiological investigation in addition to assessments of their clinical and neurological data. Results: In this study, we were unable to detect a relationship between ECA localization and acute ischemic lesions. The frequency of ECA detection in patients with IS was the same as that in carotid and vertebral-basilar arterial systems. The prevalence of ECA was the same in patients with different IS subtypes (TOAST). There was no association between the localization of ECA and ischemic lesions; moreover, there were no differences in the IS frequency between anterior and posterior circulation. There were statistically significant decreases in linear peak systolic and end diastolic velocities in the internal carotid and vertebral arteries, as well as in the intracranial arteries in patients with ECA.
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Affiliation(s)
- Denis A. Golovin
- Department of Clinical and Experimental Physiology of Circulatory System, Ultrasound and Functional Diagnostics of Federal State Budgetary Institution, Federal Center of Brain Research and Neurotechnologies of the Federal Medical Biological Agency Russian Federation, 123182 Moscow, Russia; (T.M.R.); (Y.S.K.); (V.G.L.)
| | - Tatyana M. Rostovtseva
- Department of Clinical and Experimental Physiology of Circulatory System, Ultrasound and Functional Diagnostics of Federal State Budgetary Institution, Federal Center of Brain Research and Neurotechnologies of the Federal Medical Biological Agency Russian Federation, 123182 Moscow, Russia; (T.M.R.); (Y.S.K.); (V.G.L.)
| | - Yuri S. Kudryavtsev
- Department of Clinical and Experimental Physiology of Circulatory System, Ultrasound and Functional Diagnostics of Federal State Budgetary Institution, Federal Center of Brain Research and Neurotechnologies of the Federal Medical Biological Agency Russian Federation, 123182 Moscow, Russia; (T.M.R.); (Y.S.K.); (V.G.L.)
| | - Alexander B. Berdalin
- Department of Clinical and Experimental Physiology of Circulatory System, Ultrasound and Functional Diagnostics of Federal State Budgetary Institution, Federal Center of Brain Research and Neurotechnologies of the Federal Medical Biological Agency Russian Federation, 123182 Moscow, Russia; (T.M.R.); (Y.S.K.); (V.G.L.)
| | - Svetlana E. Lelyuk
- Federal State Budgetary Educational Institution, Further Professional Education “Russian Medical Academy of Continuous Professional Education”, Ministry of Healthcare of the Russian Federation, 127051 Moscow, Russia
| | - Vladimir G. Lelyuk
- Department of Clinical and Experimental Physiology of Circulatory System, Ultrasound and Functional Diagnostics of Federal State Budgetary Institution, Federal Center of Brain Research and Neurotechnologies of the Federal Medical Biological Agency Russian Federation, 123182 Moscow, Russia; (T.M.R.); (Y.S.K.); (V.G.L.)
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12
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Meglič B, Danieli A. Glyceryl trinitrate-induced blood pressure variability decrease during head-up tilt test predicts vasovagal response. Blood Press Monit 2023; 28:236-243. [PMID: 37334541 DOI: 10.1097/mbp.0000000000000653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
PURPOSE Glyceryl trinitrate (GTN) provoked cardioinhibitory syncope during the head-up tilt test is preceded by a period of disrupted blood pressure variability (BPV). Endogenous nitric oxide (NO) attenuates BPV independently of blood pressure (BP). We hypothesized that exogenous NO donor GTN might decrease BPV during the presyncope period. A decrease in BPV may predict the tilt outcome. METHODS We analyzed 29 tilt test recordings of subjects with GTN-induced cardioinhibitory syncope and 30 recordings of negative subjects. A recursive autoregressive model of BPV after GTN was performed; powers of the respiratory (0.15-0.45 Hz) and nonrespiratory frequency (0.01-0.15 Hz) bands were calculated for each of the 20 normalized time periods. The post-GTN relative changes in heart rate, BP, and BPV were calculated. RESULTS In the syncope group, spectral power of nonrespiratory frequency systolic and diastolic BPV progressively felt for 30% after GTN application and stabilized after 180 s. BP started to fall 240 s after the GTN application. Decrease in nonrespiratory frequency power of diastolic BPV 20 s after GTN administration predicted cardioinhibitory syncope (area under the curve 0.811; 77% sensitivity; 70% specificity; cutoff value > 7%). CONCLUSION GTN application during the tilt test attenuates systolic and diastolic nonrespiratory frequency BPV during the presyncope period, independent of BP. A decrease in nonrespiratory frequency diastolic BPV 20 s after GTN application predicts cardioinhibitory syncope with good sensitivity and moderate specificity.
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Affiliation(s)
- Bernard Meglič
- Department of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
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Elias J. What Pieces are Missing in the Puzzle of Cardiovascular Adaptation to Orthostatism? Arq Bras Cardiol 2023; 120:e20230417. [PMID: 37556661 PMCID: PMC10382136 DOI: 10.36660/abc.20230417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023] Open
Affiliation(s)
- Jorge Elias
- Vitória Apart HospitalServiço de EletrofisiologiaSerraESBrasilVitória Apart Hospital – Serviço de Eletrofisiologia, Serra, ES – Brasil
- Hospital Universitário Cassiano Antonio MoraesUfesVitóriaESBrasilHospital Universitário Cassiano Antonio Moraes (Hucam) – Ufes, Vitória, ES – Brasil
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Podgoršak A, Trimmel NE, Flürenbrock F, Oertel MF, Arras M, Weisskopf M, Schmid Daners M. Influence of head-over-body and body-over-head posture on craniospinal, vascular, and abdominal pressures in an acute ovine in-vivo model. Fluids Barriers CNS 2023; 20:58. [PMID: 37533133 PMCID: PMC10394828 DOI: 10.1186/s12987-023-00458-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 07/13/2023] [Indexed: 08/04/2023] Open
Abstract
INTRODUCTION Optimal shunt-based hydrocephalus treatments are heavily influenced by dynamic pressure behaviors between proximal and distal ends of shunt catheters. Posture-dependent craniospinal, arterial, venous, and abdominal dynamics thereby play an essential role. METHODS An in-vivo ovine trial (n = 6) was conducted to evaluate communication between craniospinal, arterial, venous, and abdominal dynamics. Tilt-testing was performed between -13° and + 13° at 10-min intervals starting and ending at 0° prone position. Mean pressure, pulse pressure, and Pearson correlation (r) to the respective angle were calculated. Correlations are defined as strong: |r|≥ 0.7, mild: 0.3 <|r|< 0.7, and weak: |r|≤ 0.3. Transfer functions (TFs) between the arterial and adjacent compartments were derived. RESULTS Strong correlations were observed between posture and: mean carotid/femoral arterial (r = - 0.97, r = - 0.87), intracranial, intrathecal (r = - 0.98, r = 0.94), jugular (r = - 0.95), abdominal cranial, dorsal, caudal, and intravesical pressure (r = - 0.83, r = 0.84, r = - 0.73, r = 0.99) while mildly positive correlation exists between tilt and central venous pressure (r = 0.65). Only dorsal abdominal pulse pressure yielded a significant correlation to tilt (r = 0.21). TFs followed general lowpass behaviors with resonant peaks at 4.2 ± 0.4 and 11.5 ± 1.5 Hz followed by a mean roll-off of - 15.9 ± 6.0 dB/decade. CONCLUSIONS Tilt-tests with multi-compartmental recordings help elucidate craniospinal, arterial, venous, and abdominal dynamics, which is essential to optimize shunt-based therapy. Results motivate hydrostatic influences on mean pressure, with all pressures correlating to posture, with little influence on pulse pressure. TF results quantify the craniospinal, arterial, venous, and abdominal compartments as compliant systems and help pave the road for better quantitative models of the interaction between the craniospinal and adjacent spaces.
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Affiliation(s)
- Anthony Podgoršak
- Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Nina Eva Trimmel
- Center for Surgical Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Fabian Flürenbrock
- Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Markus Florian Oertel
- Department of Neurosurgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Margarete Arras
- Center for Surgical Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Miriam Weisskopf
- Center for Surgical Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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Li L, Po S, Yao Y. Cardioneuroablation for Treating Vasovagal Syncope: Current Status and Future Directions. Arrhythm Electrophysiol Rev 2023; 12:e18. [PMID: 37457436 PMCID: PMC10345939 DOI: 10.15420/aer.2023.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/05/2023] [Indexed: 07/18/2023] Open
Abstract
Syncope is defined by transient and spontaneous loss of consciousness with rapid recovery. Vasovagal syncope (VVS) is the most common form of syncope and is strongly associated with hypervagotonia. There is, however, a lack of effective therapies for VVS. Cardioneuroablation (CNA) is an emerging and promising intervention for VVS with favourable outcomes. CNA has been shown to suppress excessive excitation of vagal activity through ablating the cardiac ganglionated plexi. CNA in the management of VVS requires more structured and comprehensive studies and several issues concerning patient selection, selection of ablation targets, ablation endpoints and the long-term effect of CNA are yet to be determined. This review describes its clinical applications and future directions based on current research data and the authors' own experiences.
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Affiliation(s)
- Le Li
- Cardiac Arrhythmia Center, Chinese Academy of Medical Sciences, Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, China
| | - Sunny Po
- University of Oklahoma Health Sciences Center, Oklahoma City, OK, US
| | - Yan Yao
- Cardiac Arrhythmia Center, Chinese Academy of Medical Sciences, Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, China
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16
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Longo S, Legramante JM, Rizza S, Federici M. Vasovagal syncope: An overview of pathophysiological mechanisms. Eur J Intern Med 2023; 112:6-14. [PMID: 37030995 DOI: 10.1016/j.ejim.2023.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/09/2023] [Accepted: 03/23/2023] [Indexed: 04/10/2023]
Abstract
Syncope is a short-term transient loss of consciousness, characterized by rapid onset and complete spontaneous recovery. According to the 2018 European Society of Cardiology guidelines, three different types of syncope have been identified. However, all forms of syncope share a common final pathophysiological event, global cerebral hypoperfusion, which results from the inability of the circulatory system to maintain blood pressure at the level required to efficiently supply blood to the brain. The vasovagal syncope (VVS) is the most common form of syncope. Although, VVS is generally harmless, its frequent occurrence can negatively affect quality of life and increase the risk of adverse events. The pathophysiological mechanisms underlying VVS remain obscure. The multifaceted nature of VVS presents a veritable challenge to understanding this condition and developing preventative strategies. Thus, the aim of this review was to discuss the factors contributing to the pathogenesis of VVS and provide guidance for future research.
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Affiliation(s)
- Susanna Longo
- Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, Rome 00133 ITALY
| | - Jacopo M Legramante
- Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, Rome 00133 ITALY
| | - Stefano Rizza
- Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, Rome 00133 ITALY
| | - Massimo Federici
- Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, Rome 00133 ITALY.
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17
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Wood JM, Morton SM, Kim HE. A reliable and efficient adaptive Bayesian method to assess static lower limb position sense. J Neurosci Methods 2023; 392:109875. [PMID: 37150304 DOI: 10.1016/j.jneumeth.2023.109875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 04/14/2023] [Accepted: 05/04/2023] [Indexed: 05/09/2023]
Abstract
BACKGROUND Lower limb proprioception is critical for maintaining stability during gait and may impact how individuals modify their movements in response to changes in the environment and body state, a process termed "sensorimotor adaptation". However, the connection between lower limb proprioception and sensorimotor adaptation during human gait has not been established. We suspect this gap is due in part to the lack of reliable, efficient methods to assess global lower limb proprioception in an ecologically valid context. NEW METHOD We assessed static lower limb proprioception using an alternative forced choice task, administered twice to determine test-retest reliability. Participants stood on a dual-belt treadmill which passively moved one limb to stimulus locations selected by a Bayesian adaptive algorithm. At the stimulus locations, participants judged relative foot positions and the algorithm estimated the point of subjective equality (PSE) and the uncertainty of lower limb proprioception. RESULTS Using the Bland-Altman method, combined with Bayesian statistics, we found that both the PSE and uncertainty estimates had good reliability. COMPARISON WITH EXISTING METHOD(S) Current methods assessing static lower limb proprioception do so within a single joint, in non-weight bearing positions, and rely heavily on memory. One exception assessed static lower limb proprioception in standing but did not measure reliability and contained confounds impacting participants' judgments, which we experimentally controlled here. CONCLUSIONS This efficient and reliable method assessing lower limb proprioception will aid future mechanistic understanding of locomotor adaptation and serve as a useful tool for basic and clinical researchers studying balance and falls.
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Affiliation(s)
- Jonathan M Wood
- Department of Physical Therapy, University of Delaware, Newark, DE 19711, United States; Biomechanics and Movement Sciences Program, University of Delaware, Newark, DE 19711, United States.
| | - Susanne M Morton
- Department of Physical Therapy, University of Delaware, Newark, DE 19711, United States; Biomechanics and Movement Sciences Program, University of Delaware, Newark, DE 19711, United States
| | - Hyosub E Kim
- Department of Physical Therapy, University of Delaware, Newark, DE 19711, United States; Biomechanics and Movement Sciences Program, University of Delaware, Newark, DE 19711, United States; Department of Psychological and Brain Sciences, University of Delaware, Newark, DE 19716, United States; School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
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18
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Wood JM, Morton SM, Kim HE. A reliable and efficient adaptive Bayesian method to assess static lower limb position sense. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.23.525102. [PMID: 36747823 PMCID: PMC9900742 DOI: 10.1101/2023.01.23.525102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Background Lower limb proprioception is critical for maintaining stability during gait and may impact how individuals modify their movements in response to changes in the environment and body state, a process termed "sensorimotor adaptation". However, the connection between lower limb proprioception and sensorimotor adaptation during human gait has not been established. We suspect this gap is due in part to the lack of reliable, efficient methods to assess global lower limb proprioception in an ecologically valid context. New Method We assessed static lower limb proprioception using an alternative forced choice task, administered twice to determine test-retest reliability. Participants stood on a dual-belt treadmill which passively moved one limb to stimulus locations selected by a Bayesian adaptive algorithm. At the stimulus locations, participants judged relative foot positions and the algorithm estimated the point of subjective equality (PSE) and the uncertainty of lower limb proprioception. Results Using the Bland-Altman method, combined with Bayesian statistics, we found that both the PSE and uncertainty estimates had good reliability. Comparison with Existing Methods Current methods assessing static lower limb proprioception do so within a single joint, in non-weight bearing positions, and rely heavily on memory. One exception assessed static lower limb proprioception in standing but did not measure reliability and contained confounds impacting participants' judgments, which we experimentally controlled here. Conclusions This efficient and reliable method assessing lower limb proprioception will aid future mechanistic understanding of locomotor adaptation and serve as a useful tool for basic and clinical researchers studying balance and falls.
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Affiliation(s)
- Jonathan M Wood
- Department of Physical Therapy, University of Delaware, Newark, DE 19711, United States
- Biomechanics and Movement Sciences Program, University of Delaware, Newark, DE 19711, United States
| | - Susanne M Morton
- Department of Physical Therapy, University of Delaware, Newark, DE 19711, United States
- Biomechanics and Movement Sciences Program, University of Delaware, Newark, DE 19711, United States
| | - Hyosub E Kim
- Department of Physical Therapy, University of Delaware, Newark, DE 19711, United States
- Biomechanics and Movement Sciences Program, University of Delaware, Newark, DE 19711, United States
- Department of Psychological and Brain Sciences, University of Delaware, Newark, DE 19716, United States
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
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Sun R, Kang Y, Zhang M, Wang H, Shi L, Li X. Development of prognostic nomogram model to predict syncope recurrence in children with vasovagal syncope. Front Cardiovasc Med 2023; 10:1099115. [PMID: 36970348 PMCID: PMC10031040 DOI: 10.3389/fcvm.2023.1099115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/17/2023] [Indexed: 03/10/2023] Open
Abstract
BackgroundsVasovagal syncope (VVS) is a common form of syncope. In children with VVS, recurrent syncope or presyncope can affect the physical and mental health of both children and parents, which markedly impairs quality of life.ObjectivesWe aimed to identify factors at baseline that can predict the recurrence of syncope or presyncope over a 5-year follow-up period, and further to develop a prognostic nomogram model.MethodsThis cohort is bidirectional in design. From July 2017 to August 2022, children with VVS were included and followed up every 3 to 6 months. Head-up Tilt Test (HUTT) was performed for diagnosing VVS. Data were analyzed using STATA software, and risk estimates are presented as hazard ratio (HR) and 95% confidence interval (CI).ResultsTotal 352 children with VVS who had complete information were included in this study. Median follow-up time was 22 months. Overall, supine mean arterial pressure (MAP-supine) in HUTT and baseline urine specific gravity (USG) were associated with the significant risk of syncope or presyncope recurrence (HR: 0.70 and 3.00, respectively; both P < 0.05). Calibration and discrimination analyses revealed that the addition of MAP-supine and USG can result in a better fit. A prognostic nomogram model based on significant factors annexed with five traditional promising factors was finally constructed, with strong discriminative and predictive abilities (C-index approaching 0.700, P < 0.05).ConclusionsOur findings indicated that MAP-supine and USG can independently predict the significant risk of syncope recurrence in children with VVS, and the prediction was more obvious in a nomogram model.
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Affiliation(s)
- Rui Sun
- Department of Cardiology, Capital Institute of Pediatrics-Peking University Teaching Hospital, Beijing, China
- Department of Cardiology, Children’s Hospital Capital Institute of Pediatrics, Beijing, China
| | - Yingying Kang
- Department of Cardiology, Children’s Hospital Capital Institute of Pediatrics, Beijing, China
- Graduate School of Peking Union Medical College, Capital Institute of Pediatrics, Beijing, China
| | - Mingming Zhang
- Department of Cardiology, Children’s Hospital Capital Institute of Pediatrics, Beijing, China
| | - Hongmao Wang
- Department of Cardiology, Children’s Hospital Capital Institute of Pediatrics, Beijing, China
| | - Lin Shi
- Department of Cardiology, Children’s Hospital Capital Institute of Pediatrics, Beijing, China
| | - Xiaohui Li
- Department of Cardiology, Capital Institute of Pediatrics-Peking University Teaching Hospital, Beijing, China
- Department of Cardiology, Children’s Hospital Capital Institute of Pediatrics, Beijing, China
- Graduate School of Peking Union Medical College, Capital Institute of Pediatrics, Beijing, China
- Correspondence: Xiaohui Li
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El-Rhermoul FZ, Fedorowski A, Eardley P, Taraborrelli P, Panagopoulos D, Sutton R, Lim PB, Dani M. Autoimmunity in Long Covid and POTS. OXFORD OPEN IMMUNOLOGY 2023; 4:iqad002. [PMID: 37255928 PMCID: PMC10224806 DOI: 10.1093/oxfimm/iqad002] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/23/2023] [Accepted: 03/08/2023] [Indexed: 11/10/2023] Open
Abstract
Orthostatic intolerance and other autonomic dysfunction syndromes are emerging as distinct symptom clusters in Long Covid. Often accompanying these are common, multi-system constitutional features such as fatigue, malaise and skin rashes which can signify generalized immune dysregulation. At the same time, multiple autoantibodies are identified in both Covid-related autonomic disorders and non-Covid autonomic disorders, implying a possible underlying autoimmune pathology. The lack of specificity of these findings precludes direct interpretations of cause and association, but their prevalence with its supporting evidence is compelling.
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Affiliation(s)
- Fatema-Zahra El-Rhermoul
- Department of Allergy and Clinical Immunology, Guy’s and St Thomas’ NHS Foundation Trust, London SE1 9RT, UK
| | - Artur Fedorowski
- Department of Cardiology, Karolinska University Hospital and Karolinska Institute, Stockholm 171 77, Sweden
| | - Philip Eardley
- Imperial Syncope Unit, Imperial College Healthcare NHS Trust, London W12 0HS, UK
| | | | | | - Richard Sutton
- National Heart and Lung Institute, Imperial College London, London SW3 6LY, UK
| | - Phang Boon Lim
- Imperial Syncope Unit, Imperial College Healthcare NHS Trust, London W12 0HS, UK
| | - Melanie Dani
- Imperial Syncope Unit, Imperial College Healthcare NHS Trust, London W12 0HS, UK
- Cutrale Perioperative and Ageing Group, Department of Bioengineering, Imperial College London, London W12 0BZ, UK
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21
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Larson RA, Chapleau MW. Differential engagement of inhibitory and excitatory cardiopulmonary reflexes by capsaicin and phenylbiguanide in C57BL/6 mice. Am J Physiol Regul Integr Comp Physiol 2023; 324:R336-R344. [PMID: 36622083 PMCID: PMC9942883 DOI: 10.1152/ajpregu.00102.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 12/07/2022] [Accepted: 12/27/2022] [Indexed: 01/10/2023]
Abstract
The Bezold-Jarisch reflex is a powerful inhibitory reflex initiated by activation of cardiopulmonary vagal nerves during myocardial ischemia, hemorrhage, and orthostatic stress leading to bradycardia, vasodilation, hypotension, and vasovagal syncope. This clinically relevant reflex has been studied by measuring heart rate (HR) and mean arterial pressure (MAP) responses to injections of a variety of chemical compounds. We hypothesized that reflex responses to different compounds vary due to differential activation of vagal afferent subtypes and/or variable coactivation of excitatory afferents. HR and MAP responses to intravenous injections of the transient receptor potential vanilloid-1 (TRPV1) agonist capsaicin and the serotonin 5-HT3 receptor agonist phenylbiguanide (PBG) were measured in anesthetized C57BL/6 mice before and after bilateral cervical vagotomy. Capsaicin and PBG evoked rapid dose-dependent decreases in HR and MAP followed by increases in HR and MAP above baseline. Bezold-Jarisch reflex responses were abolished after vagotomy, whereas the delayed tachycardic and pressor responses to capsaicin and PBG were differentially enhanced. The relative magnitude of bradycardic versus depressor responses (↓HR/↓MAP) in vagus-intact mice was greater with capsaicin. In contrast, after vagotomy, the magnitude of excitatory tachycardic versus pressor responses (↑HR/↑MAP) was greater with PBG. Although capsaicin-induced increases in MAP and HR postvagotomy were strongly attenuated or abolished after administration of the ganglionic blocker hexamethonium, PBG-induced increases in MAP and HR were mildly attenuated and unchanged, respectively. We conclude that responses to capsaicin and PBG differ in mice, with implications for delineating the role of endogenous agonists of TRPV1 and 5-HT3 receptors in evoking cardiopulmonary reflexes in pathophysiological states.
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Affiliation(s)
- Robert A Larson
- Department of Internal Medicine, The University of Iowa, Iowa City, Iowa
- Department of Biological Sciences, Michigan Technological University, Houghton, Michigan
| | - Mark W Chapleau
- Department of Internal Medicine, The University of Iowa, Iowa City, Iowa
- Department of Molecular Physiology and Biophysics, The University of Iowa, Iowa City, Iowa
- Veterans Affairs Medical Center, Iowa City, Iowa
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22
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Coelho CM, Araújo AS, Suttiwan P, Zsido AN. An ethologically based view into human fear. Neurosci Biobehav Rev 2023; 145:105017. [PMID: 36566802 DOI: 10.1016/j.neubiorev.2022.105017] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/30/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
The quality of the defensive response to a threat depends on the elements that trigger the fear response. The current classification system of phobias does not account for this. Here, we analyze the fear-eliciting elements and discern the different types of fears that originate from them. We propose Pain, Disgust, Vasovagal response, Visual-vestibular and postural interactions, Movement and Speed, Distance and Size, Low and mid-level visual features, Smell, and Territory and social status. We subdivide phobias according to the fear-eliciting elements most frequently triggered by them and their impact on behavior. We discuss the implications of a clinical conceptualization of phobias in humans by reconsidering the current nosology. This conceptualization will facilitate finding etiological factors in defensive behavior expression, fine-tuning exposure techniques, and challenging preconceived notions of preparedness. This approach to phobias leads to surprising discoveries and shows how specific responses bear little relation to the interpretation we might later give to them. Dividing fears into their potentially fear-eliciting elements can also help in applying the research principles formulated by the Research Domain Criteria initiative.
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Affiliation(s)
- Carlos M Coelho
- University of the Azores, Ponta Delgada, Portugal; Faculty of Psychology, Chulalongkorn University, Bangkok 10330, Thailand; Center for Psychology at University of Porto, Porto, Portugal
| | - Ana S Araújo
- Center for Psychology at University of Porto, Porto, Portugal; University of Maia, Maia, Portugal
| | - Panrapee Suttiwan
- Faculty of Psychology, Chulalongkorn University, Bangkok 10330, Thailand; Life Di Center, Faculty of Psychology, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Andras N Zsido
- Institute of Psychology, University of Pécs, Pécs 7624, Hungary; Szentágothai Research Centre, University of Pécs, Pécs 7622, Hungary
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23
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Kumar R, Kaur P, Verma K, Rajeev K, Bhaskar B, Kumar S. Delayed adverse reaction in donors after whole blood donation: Is it a matter of concern? Transfus Clin Biol 2023; 30:232-237. [PMID: 36638906 DOI: 10.1016/j.tracli.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/12/2023]
Abstract
BACKGROUND Blood donation has a remarkable safety record and most of the donors have a good experience or only mild symptoms after blood donation were noted. Although even a very low rate of reactions may have gloomy effect diminishing their fondness to donate again. The main aim of our study was to determine the incidence and to analyze how various donor demographic factors tend to be associated with delayed adverse donor reactions (ADR). MATERIAL AND METHODS The prospective observational study was conducted in Department of Immuno-hematology and Blood Transfusion of tertiary care hospital. All the whole blood donors, who gave consent to participate in the study were contacted telephonically after 24 hours and day 7 after donation. The donor who couldn't be contacted telephonically, was tried again at an interval of four hours in a day for two consecutive days before declaring the participant to be non-responder. RESULTS A total of 2495 (92.4%) blood donors experienced delayed ADRs. The commonest delayed ADRs reported were generalized weakness (24.6%), bruises (24.2%) followed by painful arm (14.5%). Females, first-time blood donors, donors with low BMI and donors engaged in manual labor were more vulnerable to develop any adverse reactions. CONCLUSION Blood donors can experience delayed ADRs. It is important to prevent these reactions especially in susceptible donors. Proper awareness and training to the staff was provided to minimize the incidence of ADR.
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Affiliation(s)
| | | | | | - Kiran Rajeev
- Assistant Surgeon, Dept. of Health services, Ozhalapathy, India
| | - Bala Bhaskar
- Dept. of Transfusion Medicine, Sparsh Hospital, Bengaluru, India
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24
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Shimoda H, Yamauchi K, Takahashi T. Transient asystole associated with vasovagal reflex in an oral surgery patient: A case report. SAGE Open Med Case Rep 2023; 11:2050313X221146019. [PMID: 36636097 PMCID: PMC9829882 DOI: 10.1177/2050313x221146019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 11/29/2022] [Indexed: 01/04/2023] Open
Abstract
The perioperative cardiac events may be brought about by a relative imbalance of autonomic activities due to excessive psychological and physical stress. The present case study focuses on the asystole that can occur as a serious cardiac adverse event associated with vasovagal reflex likely to be triggered by venipuncture for securing an intravenous line during dental care. In addition, we describe and discuss herein the management of intravenous sedation for a dental phobic patient who experienced the vasovagal reflex involved in an unexpected transient asystole. The patient with vasovagal reflex episodes in daily life, who had no past medical history relevant to cardiovascular disorders, was scheduled for dental extraction under intravenous sedation. Immediately after peripheral intravenous catheterization, she complained of discomfort and nausea, and a II-lead electrocardiogram revealed asystole following bradycardia associated with vasovagal reflex. Oxygenation and intravenous fluid loading in the supine position with elevation of the lower extremities restored sinus rhythm and normal hemodynamics without the intervention of cardiopulmonary resuscitation. With administration of intravenous atropine and betamethasone as premedication, she was uneventfully treated in stress-free psychosomatic conditions under optimal sedation with midazolam without any signs of cardiovascular disorders. After administration of flumazenil, the patient satisfactorily recovered from sedation without re-sedation. The present case suggests that an asystole associated with vasovagal reflex can be triggered by venipuncture for intravenous catheterization during dental anxiety likely to affect the imbalance between sympathetic and parasympathetic activities.
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Affiliation(s)
- Hajime Shimoda
- Hajime Shimoda, Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, 4-1 Seiryomachi, Aoba-ku, Sendai 980-8575, Japan.
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25
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Lysenkov SP, Muzhenya DV, Tuguz AR, Urakova TU, Shumilov DS, Thakushinov IA, Thakushinov RA, Tatarkova EA, Urakova DM. Cholinergic deficiency in the cholinergic system as a pathogenetic link in the formation of various syndromes in COVID-19. CHINESE J PHYSIOL 2023; 66:1-13. [PMID: 36814151 DOI: 10.4103/cjop.cjop-d-22-00072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
According to recent data, several mechanisms of viral invasion of the central nervous system (CNS) have been proposed, one of which is both direct penetration of the virus through afferent nerve fibers and damage to the endothelium of cerebral vessels. It has been proven that the SARS-CoV-2 virus affects pathologically not only the human cardiorespiratory system but is also associated with a wide range of neurological diseases, cerebrovascular accidents, and neuromuscular pathologies. However, the observed post-COVID symptom complex in patients, manifested in the form of headache, "fog in the head," high temperature, muscle weakness, lowering blood pressure, does it make us think about the pathophysiological mechanisms that contribute to the development of this clinical picture? One possible explanation is a disruption in the signaling of the acetylcholine system (AChS) in the body. Viral invasions, and in particular COVID-19, can negatively affect the work of the AChS, disrupting its coordination activities. Therefore, the main goal of this literature review is to analyze the information and substantiate the possible mechanisms for the occurrence of post-COVID syndrome in people who have had COVID-19 from the standpoint of AChS dysfunctions.
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Affiliation(s)
- Sergey Petrovich Lysenkov
- FSBEI HE "Maikop State Technological University", Medical Institute, Maikop, Republic of Adygeya, Russia
| | | | - Aminat Ramazanovna Tuguz
- FSBEI HE "Adyghe State University", Immunogenetic Laboratory of the Research Institute of Complex Problems, Maikop, Republic of Adygeya, Russia
| | - Tamara Ur'evna Urakova
- FSBEI HE "Maikop State Technological University", Medical Institute, Maikop, Republic of Adygeya, Russia
| | - Dmitriy Sergeevich Shumilov
- FSBEI HE "Adyghe State University", Immunogenetic Laboratory of the Research Institute of Complex Problems, Maikop, Republic of Adygeya, Russia
| | | | | | - Elena Anatolevna Tatarkova
- FSBEI HE "Adyghe State University", Immunogenetic Laboratory of the Research Institute of Complex Problems, Maikop, Republic of Adygeya, Russia
| | - Diana Muratovna Urakova
- FSBEI HE "Maikop State Technological University", Medical Institute, Maikop, Republic of Adygeya, Russia
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Sanoudou D, Mantzoros CS, Hill MA. Sodium-glucose cotransporter-2 inhibitors: A treatment option for recurrent vasovagal syndrome? Metabolism 2022; 137:155309. [PMID: 36067806 DOI: 10.1016/j.metabol.2022.155309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 10/14/2022]
Affiliation(s)
- Despina Sanoudou
- Clinical Genomics and Pharmacogenomics Unit, 4th Department of Internal Medicine, "Attikon" Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece; Biomedical Research Foundation of the Academy of Athens, Athens, Greece; Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
| | - Christos S Mantzoros
- Department of Medicine, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA 02215, United States; Section of Endocrinology, VA Boston Healthcare System, Jamaica Plain, MA 02130, United States
| | - Michael A Hill
- Dalton Cardiovascular Research Center, Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO 65211, United States
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Brewster LM, van den Born BJ, van Montfrans GA. Lifetime prevalence and correlates of syncope in five ancestry groups. The HELIUS study. IJC HEART & VASCULATURE 2022; 43:101143. [DOI: 10.1016/j.ijcha.2022.101143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 09/29/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
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Rouwhorst R, van Oostrom I, Dijkstra E, Zwienenberg L, van Dijk H, Arns M. Vasovagal syncope as a specific side effect of DLPFC-rTMS: A frontal-vagal dose-finding study. Brain Stimul 2022; 15:1233-1235. [PMID: 36058523 DOI: 10.1016/j.brs.2022.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/17/2022] [Accepted: 08/23/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Renée Rouwhorst
- Heart & Brain Group, Brainclinics Foundation, Nijmegen, the Netherlands; Neurocare Clinics, Amsterdam/Den Haag/Nijmegen, the Netherlands; Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands.
| | | | - Eva Dijkstra
- Heart & Brain Group, Brainclinics Foundation, Nijmegen, the Netherlands; Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands; Neurowave, Amsterdam, the Netherlands
| | - Lauren Zwienenberg
- Heart & Brain Group, Brainclinics Foundation, Nijmegen, the Netherlands; Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands; Synaeda Psycho Medisch Centrum, Leeuwarden, the Netherlands
| | - Hanneke van Dijk
- Heart & Brain Group, Brainclinics Foundation, Nijmegen, the Netherlands; Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Martijn Arns
- Heart & Brain Group, Brainclinics Foundation, Nijmegen, the Netherlands; Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands
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Tao C, Cui Y, Zhang C, Liu X, Zhang Q, Liu P, Wang Y, Du J, Jin H. Clinical Efficacy of Empirical Therapy in Children with Vasovagal Syncope. CHILDREN 2022; 9:children9071065. [PMID: 35884049 PMCID: PMC9315970 DOI: 10.3390/children9071065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 11/16/2022]
Abstract
(1) Background: This case-control study was designed to assess the efficacy of empiric treatment for vasovagal syncope in children; (2) Methods: We retrospectively enrolled 181 children with vasovagal syncope from the Department of Pediatrics of Peking University First Hospital. The participants were categorized into four groups, based on the empiric treatment received: conventional treatment, including health education and orthostatic training; conventional treatment plus oral rehydration salts; conventional treatment plus metoprolol; conventional treatment plus midodrine hydrochloride. Patients were followed up to evaluate the syncopal or presyncopal recurrence. Kaplan–Meier curves were drawn to explore the syncopal or presyncopal recurrence in children, and the differences were compared among the groups using a log-rank test; (3) Results: Among the 181 children with vasovagal syncope, 11 were lost to follow-up. The median time of follow-up was 20 (8, 42) months. The Kaplan–Meier survival curve showed no significant difference in syncopal or presyncopal recurrence in children treated with different empiric options according to a log-rank test (χ2 = 1.328, p = 0.723); (4) Conclusions: The efficacy of unselected empiric therapy of vasovagal syncope in children was limited, and the individualized therapies merit further studies.
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Affiliation(s)
- Chunyan Tao
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
- Department of Genetics and Endocrinology, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Yaxi Cui
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
| | - Chunyu Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
| | - Xueqin Liu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
| | - Qingyou Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
| | - Ping Liu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
| | - Yuli Wang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
| | - Junbao Du
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
- Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing 100191, China
| | - Hongfang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China; (C.T.); (Y.C.); (C.Z.); (X.L.); (Q.Z.); (P.L.); (Y.W.); (J.D.)
- Correspondence: ; Tel.: +86-10-83573165
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Lisboa da Silva RMF, Oliveira PML, Tonelli HAF, Alves Meira ZM, Mota CDCC. Neurally Mediated Syncope in Children and Adolescents: An Updated Narrative Review. Open Cardiovasc Med J 2022. [DOI: 10.2174/18741924-v16-e2205110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Syncope presents a proportion of up to 25% among children and adolescents and accounts for 0.9% of emergency room visits. Its most frequent aetiology is neurally mediated syncope, which includes vasovagal syncope and orthostatic hypotension. Up to 70% of the paediatric population with reflex syncope is female. There are usually precipitating factors and prodromes. This mini-review will discuss the particularities of the clinical presentation, diagnosis, modified Calgary score, indications and accuracy of the head-up tilt test, classification, and pathophysiology in four sequential phases. Prognostic data and the non-pharmacological and pharmacological approaches will also be reviewed and differences regarding reflex syncope in adults will be discussed.
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Morillo CA, Brignole M. Pacing for vasovagal syncope: Tips for use in practice. Auton Neurosci 2022; 241:102998. [DOI: 10.1016/j.autneu.2022.102998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 05/17/2022] [Accepted: 05/30/2022] [Indexed: 11/27/2022]
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Aghajani F, Tavolinejad H, Sadeghian S, Bozorgi A, Jalali A, Vasheghani‐Farahani A, Yadangi S, Niazi S, Poopak A, Tajdini M. Implementation of supervised physical training to reduce vasovagal syncope recurrence: a randomized controlled trial. J Cardiovasc Electrophysiol 2022; 33:1863-1870. [DOI: 10.1111/jce.15578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 04/06/2022] [Accepted: 05/01/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Faezeh Aghajani
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Hamed Tavolinejad
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
- Non‐Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences InstituteTehran University of Medical SciencesTehranIran
| | - Saeed Sadeghian
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Ali Bozorgi
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Arash Jalali
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Ali Vasheghani‐Farahani
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Somayeh Yadangi
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Sepideh Niazi
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Amirhossein Poopak
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
| | - Masih Tajdini
- Tehran Heart Center, Cardiovascular Diseases Research InstituteTehran University of Medical SciencesTehranIran
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Sheldon RS, Raj SR. Treating Syncope Without Drugs: Standing Still, Exercising Hard, or Simply the “Expert's Touch”? J Cardiovasc Electrophysiol 2022; 33:1871-1873. [DOI: 10.1111/jce.15576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 11/26/2022]
Affiliation(s)
- Robert S Sheldon
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of MedicineUniversity of CalgaryCalgaryABCanada
| | - Satish R Raj
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of MedicineUniversity of CalgaryCalgaryABCanada
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Serum pyridoxine, folate, cobalamin, and homocysteine levels in children presenting with vasovagal syncope. Cardiol Young 2022; 32:762-768. [PMID: 34321136 DOI: 10.1017/s1047951121003036] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Recent studies confirm the role of B vitamins deficiency and hyperhomocysteinaemia in the development of dysautonomia that has been considered to be the main factor in vasovagal syncope development. The aim of the study was to investigate serum pyridoxine, folate, cobalamin, and homocysteine levels in children presenting with vasovagal syncope and to analyse the correlation between them and main clinical parameters of syncope. METHODS We studied 40 children, ages 8-17 years with a history of vasovagal syncope and 24 healthy volunteers. The serum pyridoxine, folate, cobalamin, and homocysteine levels were measured by a quantitative sandwich enzyme immunoassay technique using a commercial kit (Monobind, USA). Twenty-four-hour Holter monitoring and 24-hour ambulatory blood pressure monitoring were conducted for all participated patients. RESULTS Serum pyridoxine (9.42 ± 4.87, 16.11 ± 5.53 µg/L) and cobalamin (307.48 ± 95.50, 447.28 ± 108.85 ng/L) levels were reasonably low (p < 0.05) in patients with vasovagal syncope. Although there was no significant change in folate levels between syncope and healthy children (4.00 ± 1.34, 4.71 ± 1.73 µg/L; p = 0.20), we detected low folate-level association with longer duration of syncope (r = -0.42) and post syncope (r = -0.43) symptoms (p < 0.05). Finally, there was increased serum homocysteine level (13.55 ± 5.03, 7.81 ± 1.71 µmol/L; p < 0.05) in patients with vasovagal syncope. It was positively correlated with the average PQ interval (r = 0.35, p < 0.05) and average QTc interval (r = 0.49, p < 0.05). CONCLUSIONS The results suggested that pyridoxine, folate, cobalamin, and homocysteine may be involved in the pathogenesis of vasovagal syncope. This might provide a new approach for effective treatment of paediatric vasovagal syncope, requiring further study.
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Munipalli B, Seim L, Dawson NL, Knight D, Dabrh AMA. Post-acute sequelae of COVID-19 (PASC): a meta-narrative review of pathophysiology, prevalence, and management. SN COMPREHENSIVE CLINICAL MEDICINE 2022; 4:90. [PMID: 35402784 PMCID: PMC8977184 DOI: 10.1007/s42399-022-01167-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/23/2022] [Indexed: 12/15/2022]
Abstract
Coronavirus Disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Over 220 countries and territories have been affected by this virus, and the infection rate has continued to rise. As patients recover from the virus, many are experiencing lingering symptoms. Understanding the impact of demographics and comorbidities on symptom prevalence, manifestations, and severity is not only relevant during acute infection, it is critical to the clinical management of patients with post-acute sequelae of COVID-19, also known as PASC. Herein, we provide a comprehensive review on the most recent research related to PASC. Specifically, we focus on the description of the disorder itself, compared to acute COVID-19, and which types of patients are most affected by long-term sequelae. Further, we share recommendations for management of the most common complications of PASC.
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Affiliation(s)
- Bala Munipalli
- Division of General Internal Medicine, Mayo Clinic Florida, 4500 San Pablo Rd S, Jacksonville, FL 32224-1865 USA
| | - Lynsey Seim
- Division of Hospital Medicine, Mayo Clinic Florida, 4500 San Pablo Road S, Jacksonville, FL USA
| | - Nancy L Dawson
- Division of Hospital Medicine, Mayo Clinic Florida, 4500 San Pablo Road S, Jacksonville, FL USA
| | - Dacre Knight
- Division of General Internal Medicine, Mayo Clinic Florida, 4500 San Pablo Rd S, Jacksonville, FL 32224-1865 USA
| | - Abd Moain Abu Dabrh
- Division of General Internal Medicine, Mayo Clinic Florida, 4500 San Pablo Rd S, Jacksonville, FL 32224-1865 USA.,Integrative Medicine and Health, Mayo Clinic Florida, 4500 San Pablo Road S, Jacksonville, FL USA
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Sharma G, Ramakumar V, Sharique M, Bhatia R, Naik N, Mohanty S, Agarwal A, Meti M, Shukla A, Deepti S, Bansal R, Gupta A, Ahmed AS, Pandey RM, Narang R, Mishra S, Saxena A, Juneja R. Effect of Yoga on Clinical Outcomes and Quality of Life in Patients With Vasovagal Syncope (LIVE-Yoga). JACC Clin Electrophysiol 2022; 8:141-149. [PMID: 35210069 DOI: 10.1016/j.jacep.2021.09.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/01/2021] [Accepted: 09/15/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVES This study aims to determine the impact of yoga as an adjunct to standard therapy versus standard therapy alone on the symptomatic burden in patients with recurrent vasovagal syncope (VVS). BACKGROUND There is a significant reduction in the quality of life (QoL) of patients with recurrent VVS. Existing management therapies have been largely ineffective. Recent trials have demonstrated the efficacy of yoga in diseases with autonomic imbalance, suggesting its possible utility in VVS. METHODS Patients with recurrent VVS were randomized to receive either a specialized yoga training program in addition to current guideline-based therapy (intervention arm, group 1) or current guideline-based therapy alone (control arm, group 2). The primary outcome was a composite of the number of episodes of syncope and presyncope at 12 months. Secondary outcomes included QoL assessment by World Health Organization Quality of Life Brief Field questionnaire (WHOQoL-BREF) scores and Syncope Functional Status Questionnaire scores at 12 months, head up tilt test, and heart rate variability at 6 weeks. RESULTS A total of 55 patients underwent randomization. The mean number of syncopal or presyncopal events at 12 months was 0.7 ± 0.7 in the intervention arm compared to 2.52 ± 1.93 in the control arm (P < 0.01). In the intervention arm, 13 (43.3%) patients remained free of events versus 4 (16.0%) patients in the control arm (P = 0.02). QoL at 12 months showed significant improvement of all Syncope Functional Status Questionnaire scores and 2 domains of WHOQoL-BREF scores (P < 0.05). CONCLUSIONS Yoga as adjunctive therapy is superior to standard therapy alone in reducing the symptomatic burden and improving QoL in patients with recurrent VVS.
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Affiliation(s)
- Gautam Sharma
- Department of Cardiology, Centre for Integrative Medicine and Research, All India Institute of Medical Sciences, New Delhi, India.
| | | | - Mohd Sharique
- Centre for Integrative Medicine and Research, All India Institute of Medical Sciences, New Delhi, India
| | - Rohit Bhatia
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Nitish Naik
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sriloy Mohanty
- Centre for Integrative Medicine and Research, All India Institute of Medical Sciences, New Delhi, India
| | - Aman Agarwal
- Centre for Integrative Medicine and Research, All India Institute of Medical Sciences, New Delhi, India
| | - Mohini Meti
- Department of Pulmonary Medicine & Sleep Disorders, All India Institute of Medical Sciences, New Delhi, India
| | - Akriti Shukla
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Siddharthan Deepti
- Department of Cardiology, Centre for Integrative Medicine and Research, All India Institute of Medical Sciences, New Delhi, India
| | - Raghav Bansal
- Department of Cardiology, Centre for Integrative Medicine and Research, All India Institute of Medical Sciences, New Delhi, India
| | - Anunay Gupta
- Department of Cardiology, Vardhman Mahavir Medical College & Safdarjung Hospital, New Delhi, India
| | - A Shaheer Ahmed
- Department of Cardiology, Vardhman Mahavir Medical College & Safdarjung Hospital, New Delhi, India
| | - R M Pandey
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Rajiv Narang
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sundeep Mishra
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Anita Saxena
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Rajnish Juneja
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
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Long-COVID Syndrome and the Cardiovascular System: A Review of Neurocardiologic Effects on Multiple Systems. Curr Cardiol Rep 2022; 24:1711-1726. [PMID: 36178611 PMCID: PMC9524329 DOI: 10.1007/s11886-022-01786-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/12/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE OF REVIEW Long-COVID syndrome is a multi-organ disorder that persists beyond 12 weeks post-acute SARS-CoV-2 infection (COVID-19). Here, we provide a definition for this syndrome and discuss neuro-cardiology involvement due to the effects of (1) angiotensin-converting enzyme 2 receptors (the entry points for the virus), (2) inflammation, and (3) oxidative stress (the resultant effects of the virus). RECENT FINDINGS These effects may produce a spectrum of cardio-neuro effects (e.g., myocardial injury, primary arrhythmia, and cardiac symptoms due to autonomic dysfunction) which may affect all systems of the body. We discuss the symptoms and suggest therapies that target the underlying autonomic dysfunction to relieve the symptoms rather than merely treating symptoms. In addition to treating the autonomic dysfunction, the therapy also treats chronic inflammation and oxidative stress. Together with a full noninvasive cardiac workup, a full assessment of the autonomic nervous system, specifying parasympathetic and sympathetic (P&S) activity, both at rest and in response to challenges, is recommended. Cardiac symptoms must be treated directly. Cardiac treatment is often facilitated by treating the P&S dysfunction. Cardiac symptoms of dyspnea, chest pain, and palpitations, for example, need to be assessed objectively to differentiate cardiac from neural (autonomic) etiology. Long-term myocardial injury commonly involves P&S dysfunction. P&S assessment usually connects symptoms of Long-COVID to the documented autonomic dysfunction(s).
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Tomaino M, Russo V, Giacopelli D, Gargaro A, Brignole M. Cardiac Pacing in Cardioinhibitory Reflex Syncope: Clinical Use of Closed-loop Stimulation. Arrhythm Electrophysiol Rev 2021; 10:244-249. [PMID: 35106176 PMCID: PMC8785081 DOI: 10.15420/aer.2021.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/05/2021] [Indexed: 11/24/2022] Open
Abstract
Cardiac pacing has been studied extensively in patients with reflex syncope over the past two decades. The heterogeneity of the forms and clinical manifestations of reflex syncope explain the controversial results of older randomised clinical trials. New evidence from recent trials has changed medical practice, now leading to clear indications for pacing in patients with asystolic syncope documented during carotid sinus massage, implantable cardiac monitoring or tilt testing. Given that recent trials in reflex syncope have been performed using the closed-loop stimulation algorithm, the authors will briefly discuss this pacing mode, review hypotheses about the mechanisms underlying its activation during syncope and provide practical instructions for programming and troubleshooting.
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Affiliation(s)
| | - Vincenzo Russo
- Department of Cardiology, University of Campania ‘Luigi Vanvitelli’, Ospedale Monaldi, Naples, Italy
| | | | | | - Michele Brignole
- IRCCS Istituto Auxologico Italiano, Faint and Fall Programme, Ospedale San Luca, Milano, Italy
- Arrhythmology Centre and Syncope Unit, Department of Cardiology, Ospedali del Tigullio, Lavagna, Italy
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Komisaruk BR, Frangos E. Vagus nerve afferent stimulation: Projection into the brain, reflexive physiological, perceptual, and behavioral responses, and clinical relevance. Auton Neurosci 2021; 237:102908. [PMID: 34823149 DOI: 10.1016/j.autneu.2021.102908] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/01/2021] [Accepted: 11/06/2021] [Indexed: 12/26/2022]
Abstract
The afferent vagus nerves project to diverse neural networks within the brainstem and forebrain, based on neuroanatomical, neurophysiological, and functional (fMRI) brain imaging evidence. In response to afferent vagal stimulation, multiple homeostatic visceral reflexes are elicited. Physiological stimuli and both invasive and non-invasive electrical stimulation that activate the afferent vagus elicit perceptual and behavioral responses that are of physiological and clinical significance. In the present review, we address these multiple roles of the afferent vagus under normal and pathological conditions, based on both animal and human evidence.
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Affiliation(s)
- Barry R Komisaruk
- Department of Psychology, Rutgers, The State University of New Jersey, Newark, NJ 07102, United States.
| | - Eleni Frangos
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD 20892, United States
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Ballantyne BA, Letourneau-Shesaf S, Raj SR. Management of vasovagal syncope. Auton Neurosci 2021; 236:102904. [PMID: 34763249 DOI: 10.1016/j.autneu.2021.102904] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/27/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
Abstract
Vasovagal syncope (VVS) is a very common form of fainting. Treatment begins with patient education about the mechanism of fainting, and the non-lethal nature of vasovagal syncope. In this article, we review several non-pharmacological approaches that form the foundation of our current treatments. These include increases in dietary salt and water intake, the use of compression garments, physical counter-maneuvers and tilt-training. When these approaches are inadequate, medications can sometimes be effective. While the evidence base for the pharmacological treatment of VVS is modest, recent trial data have found drugs to be useful in placebo-controlled randomized trials. For select patients, and those patients more refractory to medications, procedural treatments may be an option. In this review, we discuss the current state of evidence for the non-pharmacological and pharmacological treatments for VVS, as well as some novel, emerging therapies for VVS.
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Affiliation(s)
- Brennan A Ballantyne
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Sevan Letourneau-Shesaf
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Satish R Raj
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Autonomic Dysfunction Center, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
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Hassani M, Fathi Jouzdani A, Motarjem S, Ranjbar A, Khansari N. How COVID-19 can cause autonomic dysfunctions and postural orthostatic syndrome? A Review of mechanisms and evidence. NEUROLOGY AND CLINICAL NEUROSCIENCE 2021; 9:434-442. [PMID: 34909198 PMCID: PMC8661735 DOI: 10.1111/ncn3.12548] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/04/2021] [Accepted: 09/07/2021] [Indexed: 04/14/2023]
Abstract
Coronavirus disease 2019 (COVID-19) is a viral disease spread by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Because the recent pandemic has resulted in significant morbidity and mortality, understanding various aspects of this disease has become critical. SARS-CoV-2 can affect a variety of organs and systems in the body. The autonomic nervous system plays an important role in regulating body functions, and its dysfunction can cause a great deal of discomfort for patients. In this study, we focused on the effect of COVID-19 on the autonomic system and syndromes associated with it, such as postural orthostatic syndrome (POTS).
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Affiliation(s)
- Mehran Hassani
- Neurosurgery Research Group (NRG)Student Research CommitteeHamadan University of Medical SciencesHamadanIran
| | - Ali Fathi Jouzdani
- Neurosurgery Research Group (NRG)Student Research CommitteeHamadan University of Medical SciencesHamadanIran
| | - Sara Motarjem
- Neurosurgery Research Group (NRG)Student Research CommitteeHamadan University of Medical SciencesHamadanIran
| | - Akram Ranjbar
- Department of Pharmacology and ToxicologySchool of PharmacyHamadan University of Medical SciencesHamadanIran
| | - Nakisa Khansari
- Department of CardiologySchool of MedicineHamadan University of Medical SciencesHamadanIran
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42
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van Dijk JG, van Rossum IA, Thijs RD. The pathophysiology of vasovagal syncope: Novel insights. Auton Neurosci 2021; 236:102899. [PMID: 34688189 DOI: 10.1016/j.autneu.2021.102899] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/11/2021] [Accepted: 10/14/2021] [Indexed: 12/16/2022]
Abstract
The pathophysiology of vasovagal syncope (VVS) is reviewed, focusing on hemodynamic aspects. Much more is known about orthostatic than about emotional VVS, probably because the former can be studied using a tilt table test (TTT). Recent advances made it possible to quantify the relative contributions of the three factors that control blood pressure: heart rate (HR), stroke volume (SV) and total peripheral resistance (TPR). Orthostatic VVS starts with venous pooling, reflected in a decrease of SV. This is followed by cardioinhibition (CI), which is a decrease of HR that accelerates the ongoing decrease of BP, making the start of CI a literal as well as fundamental turning point. The role of hormonal and other humoral factors, respiration and of psychological influences is reviewed in short, leading to the conclusion that a multidisciplinary approach to the study of the pathophysiology of VVS may yield new insights.
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Affiliation(s)
- J Gert van Dijk
- Department of Neurology, Leiden University Medical Centre, Leiden, the Netherlands.
| | - Ineke A van Rossum
- Department of Neurology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Roland D Thijs
- Department of Neurology, Leiden University Medical Centre, Leiden, the Netherlands; Stichting Epilepsie Instellingen Nederland, Heemstede, the Netherlands
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43
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High Skin Sympathetic Nerve Activity in Patients with Recurrent Syncope. J Pers Med 2021; 11:jpm11111053. [PMID: 34834405 PMCID: PMC8620794 DOI: 10.3390/jpm11111053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/19/2021] [Accepted: 10/19/2021] [Indexed: 11/29/2022] Open
Abstract
(1) Background: The autonomic imbalance plays a role in vasovagal syncope (VVS) diagnosed by head-up tilting test (HUT). neuECG is a new method of recording skin electrical signals to simultaneously analyze skin sympathetic nerve activity (SKNA) and electrocardiogram. We hypothesize that SKNA is higher in subjects with tilt-positive than tilt-negative and the SKNA surges before syncope. (2) Methods: We recorded neuECG in 41 subjects who received HUT (according to the “Italian protocol”), including rest, tilt-up, provocation and recovery phases. Data were analyzed to determine the average SKNA (aSKNA, μV) per digitized sample. Electrocardiogram was used to calculate standard deviation of normal-to-normal beat intervals (SDNN). The “SKNA-SDNN index” was calculated by rest aSKNA multiplied by the ratio of tilt-up to rest SDNN. (3) Results: 16 of 41 (39%) subjects developed syncope. The aSKNA at rest phase is significantly higher in the tilt-positive (1.21 ± 0.27 µV) than tilt-negative subjects (1.02 ± 0.29 µV) (p = 0.034). There are significant surges and withdraw of aSKNA 30 s before and after syncope (both p ≤ 0.006). SKNA-SDNN index is able to predict syncope (p < 0.001). (4) Conclusion: Higher SKNA at rest phase is associated with positive HUT. The SKNA-SDNN index is a novel marker to predict syncope during HUT.
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44
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Fedorowski A, Rivasi G, Torabi P, Johansson M, Rafanelli M, Marozzi I, Ceccofiglio A, Casini N, Hamrefors V, Ungar A, Olshansky B, Sutton R, Brignole M, Parati G. Underlying hemodynamic differences are associated with responses to tilt testing. Sci Rep 2021; 11:17894. [PMID: 34504263 PMCID: PMC8429732 DOI: 10.1038/s41598-021-97503-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 08/23/2021] [Indexed: 11/24/2022] Open
Abstract
Aim of this study was to explore whether differences in resting hemodynamic parameters may be associated with tilt test results in unexplained syncope. We analyzed age, gender, systolic (SBP), diastolic blood pressure (DBP) and heart rate (HR) by merging three large databases of patients considered likely to be of vasovagal reflex etiology, comparing patients who had tilt-induced reflex response with those who did not. Tilt-induced reflex response was defined as spontaneous symptom reproduction with characteristic hypotension and bradycardia. Relationship of demographics and baseline supine BP to tilt-test were assessed using logistic regression models. Individual records of 5236 patients (45% males; mean age: 60 ± 22 years; 32% prescribed antihypertensive therapy) were analyzed. Tilt-positive (n = 3129, 60%) vs tilt-negative patients had lower SBP (127.2 ± 17.9 vs 129.7 ± 18.0 mmHg, p < 0.001), DBP (76.2 ± 11.5 vs 77.7 ± 11.7 mmHg, p < 0.001) and HR (68.0 ± 11.5 vs 70.5 ± 12.5 bpm, p < 0.001). In multivariable analyses, tilt-test positivity was independently associated with younger age (Odds ratio (OR) per 10 years:1.04; 95% confidence interval (CI), 1.01–1.07, p = 0.014), SBP ≤ 128 mmHg (OR:1.27; 95%CI, 1.11–1.44, p < 0.001), HR ≤ 69 bpm (OR:1.32; 95%CI, 1.17–1.50, p < 0.001), and absence of hypertension (OR:1.58; 95%CI, 1.38–1.81, p < 0.001). In conclusion, among patients with suspected reflex syncope, younger age, lower blood pressure and lower heart rate are associated with positive tilt-test result.
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Affiliation(s)
- Artur Fedorowski
- Department of Clinical Sciences, Lund University, Malmö, Sweden. .,Department of Cardiology, Skåne University Hospital, Carl-Bertil Laurells gata 9, 214 28, Malmö, Sweden.
| | - Giulia Rivasi
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, Careggi Hospital, University of Florence, Florence, Italy
| | - Parisa Torabi
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Madeleine Johansson
- Department of Clinical Sciences, Lund University, Malmö, Sweden.,Department of Cardiology, Skåne University Hospital, Carl-Bertil Laurells gata 9, 214 28, Malmö, Sweden
| | - Martina Rafanelli
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, Careggi Hospital, University of Florence, Florence, Italy
| | - Irene Marozzi
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, Careggi Hospital, University of Florence, Florence, Italy
| | - Alice Ceccofiglio
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, Careggi Hospital, University of Florence, Florence, Italy
| | - Niccolò Casini
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, Careggi Hospital, University of Florence, Florence, Italy
| | | | - Andrea Ungar
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, Careggi Hospital, University of Florence, Florence, Italy
| | - Brian Olshansky
- Division of Cardiology, Department of Internal Medicine, University of Iowa Hospitals, Iowa City, IA, USA
| | - Richard Sutton
- Department of Cardiology, Skåne University Hospital, Carl-Bertil Laurells gata 9, 214 28, Malmö, Sweden.,Department of Cardiology, National Heart and Lung Institute, Imperial College, Hammersmith Hospital Campus, London, UK
| | - Michele Brignole
- Faint & Fall Programme, IRCCS Istituto Auxologico Italiano, Ospedale San Luca, Milano, Italy.,Arrhythmology Centre and Syncope Unit, Department of Cardiology, Ospedali del Tigullio, Lavagna, Italy
| | - Gianfranco Parati
- Faint & Fall Programme, IRCCS Istituto Auxologico Italiano, Ospedale San Luca, Milano, Italy.,Department of Medicine and Surgery, University of Milano Bicocca, Milan, Italy
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45
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Wieling W, Jardine DL. Cardioneuroablation for recurrent vasovagal syncope: Important questions need to be answered. Heart Rhythm 2021; 18:2167-2168. [PMID: 34481983 DOI: 10.1016/j.hrthm.2021.08.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022]
Affiliation(s)
- Wouter Wieling
- Department of Internal Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
| | - David L Jardine
- Department of General Medicine, Christchurch Hospital, University of Otago, Christchurch, New Zealand
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Sotiriadou M, Papadopoulos CE, Antoniadis AP, Roumelis P, Vergopoulos S, Konstantinidis P, Pagkourelias ED, Tzikas S, Fragakis N, Vassilikos V. The impact of atrial mechanical function on age-dependent presentation of neurocardiogenic syncope. Clin Cardiol 2021; 44:1440-1447. [PMID: 34374094 PMCID: PMC8495094 DOI: 10.1002/clc.23704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 07/19/2021] [Indexed: 12/20/2022] Open
Abstract
Background The contribution of atrial and ventricular function in neurocardiogenic syncope (NCS) pathophysiology is elusive. Hypothesis We assessed the influence of echocardiographic properties to the age of presentation and NCS recurrences. Methods We assigned 124 patients with symptoms suggesting NCS, to those with syncope initiation at age <35 (group A, n = 56) and >35 years (group B, n = 68). Echocardiographic indices were measured before head‐up tilt test (HUTT). Results A total of 55 had positive HUTT (44%) with a trend favoring group A (p = .08). Group A exhibited lower left atrial (LA) volume index (17 ± 6 vs. 22 ± 11 ml/m2, p = .015), higher LA ejection fraction (69 ± 10 vs. 63 ± 11%, p = .008), LA peak strain (reservoir phase 41 ± 13 vs. 31 ± 14%, p = .001, contraction phase 27 ± 11 vs. 15 ± 10%, p < .001) and LA peak strain rate (reservoir phase 1.83 ± 1.04 vs. 1.36 ± 0.96 1/s, p = .012, conduit phase 2.36 ± 1.25 vs. 1.36 ± 0.78 1/s, p = .001). Group A showed smaller minimum right atrial (RA) volume, better RA systolic function, superior left ventricular diastolic indices, and lower filling pressures. Group A patients were more likely to have >3 recurrences (82.0% vs. 50.1%, p < .05). Conclusions Patients with younger age of NCS onset and more syncopal recurrences manifest smaller LA and RA dimensions with distinct patterns of systolic and diastolic function and better LA reservoir and contraction properties. These findings may indicate an increased susceptibility to preload reduction, thereby triggering the NCS mechanism.
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Affiliation(s)
- Melani Sotiriadou
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Christodoulos E Papadopoulos
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Antonios P Antoniadis
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Panagiotis Roumelis
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Stavros Vergopoulos
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Periklis Konstantinidis
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Efstathios D Pagkourelias
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Stergios Tzikas
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Nikolaos Fragakis
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Vassilios Vassilikos
- Third Department of Cardiology, Hippokration General Hospital, Aristotle University Medical School, Thessaloniki, Greece
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47
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Electrocardiographic Patterns in Patients with Neurally Mediated Syncope. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:medicina57080808. [PMID: 34441014 PMCID: PMC8399501 DOI: 10.3390/medicina57080808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/02/2021] [Accepted: 08/04/2021] [Indexed: 12/27/2022]
Abstract
The baseline electrocardiogram (ECG) is less informative in neurally mediated syncope (NMS) than in arrhythmic syncope. However, some of the ECG patterns present in NMS can have diagnostic and prognostic value in such patients. Electrocardiographic documentation of a syncopal spell and thus identification of the ECG changes can be performed during tilt table test (TTT) or during prolonged ECG monitoring. This work reviews the specific ECG patterns in NMS, which are primarily related to the cardioinhibitory reflex. In addition, there are other ECG findings present in patients with NMS that are being analyzed, such as increased heart rate variability as well as specific QRS voltage patterns. In addition to the diagnostic and prognostic value, these ECG patterns in NMS may help improving the selection of patients for pacemaker implant.
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48
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Brignole M, Rivasi G, Sutton R, Kenny RA, Morillo CA, Sheldon R, Raj SR, Ungar A, Furlan R, van Dijk G, Hamdan M, Hamrefors V, Engström G, Park C, Soranna D, Zambon A, Parati G, Fedorowski A. Low-blood pressure phenotype underpins the tendency to reflex syncope. J Hypertens 2021; 39:1319-1325. [PMID: 33560050 PMCID: PMC8183486 DOI: 10.1097/hjh.0000000000002800] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/04/2020] [Accepted: 12/30/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND We hypothesized that cardiovascular physiology differs in reflex syncope patients compared with the general population, predisposing such individuals to vasovagal reflex. METHODS In this multicohort cross-sectional study, we compared aggregate data of resting SBP, DBP, pulse pressure (PP) and heart rate (HR), collected from six community-based cohort studies (64 968 observations) with those from six databases of reflex syncope patients (6516 observations), subdivided by age decades and sex. RESULTS Overall, in male individuals with reflex syncope, SBP (-3.4 mmHg) and PP (-9.2 mmHg) were lower and DBP (+2.8 mmHg) and HR (+5.1 bpm) were higher than in the general population; the difference in SBP was higher at ages above 60 years. In female individuals, PP (-6.0 mmHg) was lower and DBP (+4.7 mmHg) and HR (+4.5 bpm) were higher than in the general population; differences in SBP were less pronounced, becoming evident only above 60 years. Compared with male individuals, SBP in female individuals exhibited slower increase until age 40 years, and then demonstrated steeper increase that continued throughout remaining life. CONCLUSION The patients prone to reflex syncope demonstrate a different resting cardiovascular haemodynamic profile as compared with a general population, characterized by lower SBP and PP, reflecting reduced venous return and lower stroke volume, and a higher HR and DBP, suggesting the activation of compensatory mechanisms. Our data contribute to a better understanding why some individuals with similar demographic characteristics develop reflex syncope and others do not. VIDEO ABSTRACT http://links.lww.com/HJH/B580.
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Affiliation(s)
- Michele Brignole
- IRCCS Istituto Auxologico Italiano, Faint & Fall Programme, Ospedale San Luca, Milan
| | - Giulia Rivasi
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, University of Florence and Careggi Hospital, Florence, Italy
| | - Richard Sutton
- National Heart and Lung Institute, Imperial College, Hammersmith Hospital Campus, Ducane Road, London, UK
| | - Rose Anne Kenny
- Chair Medical Gerontology, Syncope and Falls Unit, School of Medicine, St James Hospital and Trinity College, Dublin, Ireland
| | - Carlos A. Morillo
- Division of Cardiology, Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Robert Sheldon
- Division of Cardiology, Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Satish R. Raj
- Division of Cardiology, Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Andrea Ungar
- Syncope Unit, Division of Geriatrics and Intensive Care Unit, University of Florence and Careggi Hospital, Florence, Italy
| | - Raffaello Furlan
- Internal Medicine, Humanitas Clinical and Research Center-IRCCS, Department of Biomedical Sciences, Humanitas University, Rozzano, Italy
| | - Gert van Dijk
- Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Mohamed Hamdan
- Department of Medicine, Division of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Viktor Hamrefors
- Department of Clinical Sciences, Lund University
- Department of Internal Medicine, Skåne University Hospital, Malmö, Sweden
| | | | - Chloe Park
- MRC Unit for Lifelong Health and Ageing, Institute of Cardiovascular Science, University College, London, UK
| | | | - Antonella Zambon
- IRCCS Istituto Auxologico Italiano, Biostatistics Unit
- Department of Statistics and quantitative methods, University of Milano-Bicocca
| | - Gianfranco Parati
- IRCCS Istituto Auxologico Italiano, Faint & Fall Programme, Ospedale San Luca, Milan
- Department of Medicine and Surgery, University of Milano Bicocca and IRCCS Istituto Auxologico Italiano, Ospedale San Luca, Milan, Italy
| | - Artur Fedorowski
- Department of Clinical Sciences, Lund University
- Department of Cardiology, Skåne University Hospital, Malmö, Sweden
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49
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Guo Y, Chen X, Zeng T, Wang L, Cen L. Age Is a Predictor for the Syncope Recurrence in Elderly Vasovagal Syncope Patients With a Positive Head-Up Tilt Test. Front Cardiovasc Med 2021; 8:667171. [PMID: 34268342 PMCID: PMC8276848 DOI: 10.3389/fcvm.2021.667171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/25/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Valid predictors of the syncope recurrence in vasovagal syncope (VVS) patients with a positive head-up tilt test (HUTT) are currently lacking. The goal of this study was to identify the predictive performance of age for the recurrence of syncope in VVS patients with a positive HUTT. Methods: In total, 175 VVS patients with a positive HUTT were observed for 6-32 months, and the recurrence of ≥1 syncope or typical pre-syncope prodromal episodes during follow-up was considered syncope recurrence. The population was divided into 2 groups, namely, a syncope recurrence group (44 patients) and a no syncope recurrence group (131 patients). The baseline clinical data, haemodynamic parameters, and classification of VVS on the HUTT were analyzed. Logistic regression was used to analyse the effect size and confidence interval for age. A receiver operating characteristic (ROC) curve analysis was used to assess the predictive performance and investigate the predictive value of age by the area under the curve (AUC). Results: The median age of the syncope recurrence group was older than that of the no syncope recurrence group [60.0 (47.8, 66.0) years>53.0 (43.0, 62.0) years], and there was a significant difference between the two groups (P < 0.05). The trend for syncope recurrence changed with advancing age, and the logistic regression model adjusted by sex showed that older patients had an increased risk of syncope recurrence in VVS with a positive HUTT [OR value: 1.03, 95% confidence interval (CI): 1.008-1.061, p < 0.05]. Age was a valid predictor for the recurrence of syncope in elderly VVS patients with a positive HUTT (AUC: 0.688; 95% CI: 0.598-0.777, p < 0.05). The cut-off value was 53.5 years, and the sensitivity and specificity were 72.7 and 52.7%, respectively. Conclusions: Age may be a valid predictor for syncope recurrence in elderly VVS patients with a positive HUTT. The rate of syncope recurrence increased with advancing age, especially in females.
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Affiliation(s)
- Yongjuan Guo
- Department of Noninvasive Electrocardiology, Ningbo First Hospital, Ningbo, China
| | - Xiaomin Chen
- Department of Cardiology, Ningbo First Hospital, Ningbo, China
| | - Tianze Zeng
- Department of Noninvasive Electrocardiology, Ningbo First Hospital, Ningbo, China
| | - Lin Wang
- Department of Noninvasive Electrocardiology, Ningbo First Hospital, Ningbo, China
| | - Lvwei Cen
- Department of Cardiology, Ningbo First Hospital, Ningbo, China
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50
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Ghariq M, Kerkhof FI, Reijntjes RH, Thijs RD, van Dijk JG. New hemodynamic criteria to separate classical orthostatic hypotension from vasovagal syncope. Ann Clin Transl Neurol 2021; 8:1635-1645. [PMID: 34166574 PMCID: PMC8351382 DOI: 10.1002/acn3.51412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/20/2021] [Accepted: 06/07/2021] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVE To define and evaluate hemodynamic criteria to distinguish between classical orthostatic hypotension (cOH) and vasovagal syncope (VVS) in tilt table testing (TTT). METHODS Inclusion criteria for VVS were a history of VVS and tilt-induced syncope defined as a blood pressure (BP) decrease and electroencephalographic changes during syncope with complaint recognition. Criteria for cOH were a history of cOH and a BP decrease meeting published criteria. Clinical diagnoses were established prior to TTT. We assessed (1) whether the decrease of systolic BP accelerated, "convex," or decelerated, "concave"; (2) the time from head-up tilt to when BP reached one-half its maximal decrease; (3) the difference between baseline heart rate (HR) and HR at BP nadir. We calculated the diagnostic yield of optimized thresholds of these features and their combinations. RESULTS We included 82 VVS cases (40% men, median age 44 years) and 65 cOH cases (66% men, median age 70 years). BP decrease was concave in cOH in 79% and convex in VVS in 94% (p < 0.001). The time to reach half the BP decrease was shorter in cOH (median 34 sec, interquartile range (IQR) 19-98 sec) than in VVS (median 1571 sec, IQR 1381-1775 sec, p < 0.001). Mean HR increased by 11 ± 11 bpm in cOH and decreased by 20 ± 19 bpm in VVS (p < 0.001). When all three features pointed to VVS, sensitivity for VVS was 82% and specificity was 100%. When all three pointed to cOH, sensitivity for cOH was 71% and specificity was 100%. INTERPRETATION These new hemodynamic criteria reliably differentiate cOH from VVS.
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Affiliation(s)
- Maryam Ghariq
- Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Fabian I Kerkhof
- Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Robert H Reijntjes
- Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Roland D Thijs
- Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands.,Stichting Epilepsie Instellingen Nederland (SEIN), Heemstede, The Netherlands.,NIHR University College London Hospitals Biomedical Research Centre, London, United Kingdom
| | - J Gert van Dijk
- Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands
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