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Lyhne MD, Schultz JG, Mortensen CS, Kramer A, Nielsen-Kudsk JE, Andersen A. Immediate cardiopulmonary responses to consecutive pulmonary embolism: a randomized, controlled, experimental study. BMC Pulm Med 2024; 24:233. [PMID: 38745282 PMCID: PMC11093735 DOI: 10.1186/s12890-024-03006-9] [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: 01/02/2024] [Accepted: 04/10/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Acute pulmonary embolism (PE) induces ventilation-perfusion mismatch and hypoxia and increases pulmonary pressure and right ventricular (RV) afterload, entailing potentially fatal RV failure within a short timeframe. Cardiopulmonary factors may respond differently to increased clot burden. We aimed to elucidate immediate cardiopulmonary responses during successive PE episodes in a porcine model. METHODS This was a randomized, controlled, blinded study of repeated measurements. Twelve pigs were randomly assigned to receive sham procedures or consecutive PEs every 15 min until doubling of mean pulmonary pressure. Cardiopulmonary assessments were conducted at 1, 2, 5, and 13 min after each PE using pressure-volume loops, invasive pressures, and arterial and mixed venous blood gas analyses. ANOVA and mixed-model statistical analyses were applied. RESULTS Pulmonary pressures increased after the initial PE administration (p < 0.0001), with a higher pulmonary pressure change compared to pressure change observed after the following PEs. Conversely, RV arterial elastance and pulmonary vascular resistance was not increased after the first PE, but after three PEs an increase was observed (p = 0.0103 and p = 0.0015, respectively). RV dilatation occurred following initial PEs, while RV ejection fraction declined after the third PE (p = 0.004). RV coupling exhibited a decreasing trend from the first PE (p = 0.095), despite increased mechanical work (p = 0.003). Ventilatory variables displayed more incremental changes with successive PEs. CONCLUSION In an experimental model of consecutive PE, RV afterload elevation and dysfunction manifested after the third PE, in contrast to pulmonary pressure that increased after the first PE. Ventilatory variables exhibited a more direct association with clot burden.
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Affiliation(s)
- Mads Dam Lyhne
- Department of Clinical Medicine, Aarhus University, Palle Juul Jensens Boulevard 82, Aarhus N, 8200, Denmark.
- Department of Anaesthesiology and Intensive Care, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, Aarhus N, DK-8200, Denmark.
| | - Jacob Gammelgaard Schultz
- Department of Clinical Medicine, Aarhus University, Palle Juul Jensens Boulevard 82, Aarhus N, 8200, Denmark
- Department of Cardiology, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, Aarhus N, 8200, Denmark
| | - Christian Schmidt Mortensen
- Department of Clinical Medicine, Aarhus University, Palle Juul Jensens Boulevard 82, Aarhus N, 8200, Denmark
| | - Anders Kramer
- Department of Clinical Medicine, Aarhus University, Palle Juul Jensens Boulevard 82, Aarhus N, 8200, Denmark
- Department of Cardiology, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, Aarhus N, 8200, Denmark
| | - Jens Erik Nielsen-Kudsk
- Department of Clinical Medicine, Aarhus University, Palle Juul Jensens Boulevard 82, Aarhus N, 8200, Denmark
- Department of Cardiology, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, Aarhus N, 8200, Denmark
| | - Asger Andersen
- Department of Clinical Medicine, Aarhus University, Palle Juul Jensens Boulevard 82, Aarhus N, 8200, Denmark
- Department of Cardiology, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, Aarhus N, 8200, Denmark
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Merit VT, Kirk ME, Schultz JG, Hansen JV, Lyhne MD, Kramer AD, Pedersen CCE, Karout L, Kalra MK, Andersen A, Nielsen-Kudsk JE. Changes in Pulmonary Vascular Resistance and Obstruction Score Following Acute Pulmonary Embolism in Pigs. Crit Care Explor 2024; 6:e1040. [PMID: 38511125 PMCID: PMC10954062 DOI: 10.1097/cce.0000000000001040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024] Open
Abstract
OBJECTIVES To investigate the contribution of mechanical obstruction and pulmonary vasoconstriction to pulmonary vascular resistance (PVR) in acute pulmonary embolism (PE) in pigs. DESIGN Controlled, animal study. SETTING Tertiary university hospital, animal research laboratory. SUBJECTS Female Danish slaughter pigs (n = 12, ~60 kg). INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS PE was induced by infusion of autologous blood clots in pigs. CT pulmonary angiograms were performed at baseline, after PE (first experimental day [PEd0]) and the following 2 days (second experimental day [PEd1] and third experimental day [PEd2]), and clot burden quantified by a modified Qanadli Obstruction Score. Hemodynamics were evaluated with left and right heart catheterization and systemic invasive pressures each day before, under, and after treatment with the pulmonary vasodilators sildenafil (0.1 mg/kg) and oxygen (Fio2 40%). PE increased PVR (baseline vs. PEd0: 178 ± 54 vs. 526 ± 160 dynes; p < 0.0001) and obstruction score (baseline vs. PEd0: 0% vs. 45% ± 13%; p < 0.0001). PVR decreased toward baseline at day 1 (baseline vs. PEd1: 178 ± 54 vs. 219 ± 48; p = 0.16) and day 2 (baseline vs. PEd2: 178 ± 54 vs. 201 ± 50; p = 0.51). Obstruction score decreased only slightly at day 1 (PEd0 vs. PEd1: 45% ± 12% vs. 43% ± 14%; p = 0.04) and remained elevated throughout the study (PEd1 vs. PEd2: 43% ± 14% vs. 42% ± 17%; p = 0.74). Sildenafil and oxygen in combination decreased PVR at day 0 (-284 ± 154 dynes; p = 0.0064) but had no effects at day 1 (-8 ± 27 dynes; p = 0.4827) or day 2 (-18 ± 32 dynes; p = 0.0923). CONCLUSIONS Pulmonary vasoconstriction, and not mechanical obstruction, was the predominant cause of increased PVR in acute PE in pigs. PVR rapidly declined over the first 2 days after onset despite a persistent mechanical obstruction of the pulmonary circulation from emboli. The findings suggest that treatment with pulmonary vasodilators might only be effective in the acute phase of PE thereby limiting the window for such therapy.
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Affiliation(s)
- Victor T Merit
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - Mathilde E Kirk
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - Jacob G Schultz
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - Jacob V Hansen
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - Mads D Lyhne
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
- Department of Anesthesia and Intensive Care, Aarhus University Hospital, Aarhus N, Denmark
| | - Anders D Kramer
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | | | - Lina Karout
- Department of Radiology, Massachusetts General Hospital, Boston, MA
| | | | - Asger Andersen
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - Jens Erik Nielsen-Kudsk
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus N, Denmark
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3
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Lyhne MD, Bikdeli B, Dudzinski DM, Muriel-García A, Kabrhel C, Sancho-Bueso T, Pérez-David E, Lobo JL, Alonso-Gómez Á, Jiménez D, Monreal M. Validation of Echocardiographic Measurements in Patients with Pulmonary Embolism in the RIETE Registry. TH OPEN 2024; 8:e1-e8. [PMID: 38197015 PMCID: PMC10774011 DOI: 10.1055/s-0043-1777765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/01/2023] [Indexed: 01/11/2024] Open
Abstract
Background In acute pulmonary embolism (PE), echocardiographic identification of right ventricular (RV) dysfunction will inform prognostication and clinical decision-making. Registro Informatizado Enfermedad TromboEmbolica (RIETE) is the world's largest registry of patients with objectively confirmed PE. The reliability of site-reported RV echocardiographic measurements is unknown. We aimed to validate site-reported key RV echocardiographic measurements in the RIETE registry. Methods Fifty-one randomly chosen patients in RIETE who had transthoracic echocardiogram (TTE) performed for acute PE were included. TTEs were de-identified and analyzed by a core laboratory of two independent observers blinded to site-reported data. To investigate reliability, intraclass correlation coefficients (ICCs) and Bland-Altman plots between the two observers, and between an average of the two observers and the RIETE site-reported data were obtained. Results Core laboratory interobserver variations were very limited with correlation coefficients >0.8 for all TTE parameters. Agreement was substantial between core laboratory observers and site-reported data for key parameters including tricuspid annular plane systolic excursion (ICC 0.728; 95% confidence interval [CI], 0.594-0.862) and pulmonary arterial systolic pressure (ICC 0.726; 95% CI, 0.601-0.852). Agreement on right-to-left ventricular diameter ratio (ICC 0.739; 95% CI, 0.443-1.000) was validated, although missing data limited the precision of the estimates. Bland-Altman plots showed differences close to zero. Conclusion We showed substantial reliability of key RV site-reported measurements in the RIETE registry. Ascertaining the validity of such data adds confidence and reliability for subsequent investigations.
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Affiliation(s)
- Mads Dam Lyhne
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital and Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Behnood Bikdeli
- Cardiovascular Medicine Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
- Thrombosis Research Group, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
- Yale-New Haven Hospital (YNHH)/Yale Center for Outcomes Research and Evaluation (CORE), New Haven, Connecticut, United States
| | - David M. Dudzinski
- Department of Cardiology, Massachusetts General Hospital, Boston, Massachusetts, United States
| | - Alfonso Muriel-García
- Unidad de Bioestadística Clínica, Hospital Universitario Ramón y Cajal, Madrid and CIBERESP, Universidad de Alcalá, Madrid, Spain
| | - Christopher Kabrhel
- Department of Emergency Medicine, Centre of Vascular Emergencies, Massachusetts General Hospital, Boston, Massachusetts, United States
| | - Teresa Sancho-Bueso
- Department of Internal Medicine, Hospital Universitario La Paz, Madrid, Spain
| | | | - José Luis Lobo
- Department of Pneumonology, Hospital Universitario Araba, Álava, Spain
| | | | - David Jiménez
- Respiratory Department, Hospital Ramón y Cajal and Medicine Department, Universidad de Alcalá, Madrid, Spain
- CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Manuel Monreal
- CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Chair for the Study of Thromboembolic Disease, Faculty of Health Sciences, UCAM - Universidad Católica San Antonio de Murcia, Murcia, Spain
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Wang Y, Zhang Y, Wang Y, Zhai C, Gao J, Huang G, Ma S. Chest pain with ST-elevation in leads AVR, III, AVF, V 1, V 3R, V 4R and V 5R. Clin Exp Hypertens 2023; 45:2153134. [PMID: 36484289 DOI: 10.1080/10641963.2022.2153134] [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: 12/13/2022]
Abstract
We mistakenly diagnosed a patient with pulmonary embolism as ST-elevation acute myocardial infarction. The case complained of chest pain with ST-elevation in leads AVR, III, AVF, V1, V3R, V4R and V5R. In addition, we also found ST- elevation AVR, III>ST- elevation AVF, QIII>QAVF and QV1. Multi-site pulmonary embolism can lead to type 2 myocardial infarction or special type of myocardial infarction with non-obstructive coronary arteries through multiple pathological mechanisms.
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Affiliation(s)
- Yuehai Wang
- Heart Center, Liaocheng People's Hospital and Liaocheng Hospital Affiliated to Shandong First Medical University, Liaocheng, PR China
| | - Yuqiang Zhang
- Heart Center, Liaocheng People's Hospital and Liaocheng Hospital Affiliated to Shandong First Medical University, Liaocheng, PR China
| | - Yan Wang
- Department of Respiratory and Critical Care Medicine, Liaocheng People's Hospital and Liaocheng Hospital Affiliated to Shandong First Medical University, Liaocheng, PR China
| | - Changpeng Zhai
- Heart Center, Liaocheng People's Hospital and Liaocheng Hospital Affiliated to Shandong First Medical University, Liaocheng, PR China
| | - Jie Gao
- Heart Center, Liaocheng People's Hospital and Liaocheng Hospital Affiliated to WEIFANG MEDICAL UNIVERSITY, Liaocheng, PR China
| | - Guangyong Huang
- Heart Center, Liaocheng People's Hospital and Liaocheng Hospital Affiliated to Shandong First Medical University, Liaocheng, PR China
| | - Shengjun Ma
- Heart Center, Liaocheng People's Hospital and Liaocheng Hospital Affiliated to Shandong First Medical University, Liaocheng, PR China
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Fulton B, Bashir R, Weinberg MD, Lakhter V, Rali P, Pugliese S, Giri J, Kobayashi T. Advanced Treatment of Hemodynamically Unstable Acute Pulmonary Embolism and Clinical Follow-up. Semin Thromb Hemost 2023; 49:785-796. [PMID: 37696292 DOI: 10.1055/s-0043-1772840] [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: 09/13/2023]
Abstract
High-risk acute pulmonary embolism (PE), defined as acute PE associated with hemodynamic instability, remains a significant contributor to cardiovascular morbidity and mortality in the United States and worldwide. Historically, anticoagulant therapy in addition to systemic thrombolysis has been the mainstays of medical therapy for the majority of patients with high-risk PE. In efforts to reduce the morbidity and mortality, a wide array of interventional and surgical therapies has been developed and employed in the management of these patients. However, the most recent guidelines for the management of PE have reserved the use of these advanced therapies in scenarios where thrombolytic therapy plus anticoagulation are unsuccessful. This is due largely to the lack of prospective, randomized studies in this population. Stemming from this, the approach to treatment of these patients varies widely depending on institutional experience and resources. Furthermore, morbidity and mortality remain unacceptably high in this population, with estimated 30-day mortality of at least 30%. As such, development of a standardized approach to treatment of these patients is paramount to improving outcomes. Early and accurate risk stratification in conjunction with a multidisciplinary team approach in the form of a PE response team is crucial. With the advent of novel therapies for the treatment of acute PE, in addition to the growing availability of and familiarity with mechanical circulatory support systems, such a standardized approach may now be within reach.
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Affiliation(s)
- Brian Fulton
- Division of Cardiovascular Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Riyaz Bashir
- Division of Cardiovascular Disease, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Mitchell D Weinberg
- Zucker School of Medicine at Hofstra/Northwell, Staten Island University Hospital, Staten Island, New York
| | - Vladimir Lakhter
- Division of Cardiovascular Disease, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Parth Rali
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Steve Pugliese
- Division of Pulmonary and Critical Care Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jay Giri
- Division of Cardiovascular Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
- Cardiovascular Outcomes, Quality and Evaluative Research Center, Philadelphia, Pennsylvania
| | - Taisei Kobayashi
- Division of Cardiovascular Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
- Cardiovascular Outcomes, Quality and Evaluative Research Center, Philadelphia, Pennsylvania
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6
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Ho P, Al-Chami F, Caroline M, Gnall E, Bonn J, Greenspon L. Paradoxical pulmonary artery systolic pressure response with catheter-directed therapies for pulmonary embolism. AMERICAN HEART JOURNAL PLUS : CARDIOLOGY RESEARCH AND PRACTICE 2023; 34:100320. [PMID: 38510955 PMCID: PMC10946050 DOI: 10.1016/j.ahjo.2023.100320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 03/22/2024]
Abstract
Background Early data on use of catheter-directed therapies (CDT) for treatment of Intermediate or High-Risk pulmonary embolism (PE) show improvement in pulmonary artery systolic pressures (PAsP) and RV/LV ratios. Occasionally a paradoxical rise in PAsP was observed with CDT utilizing ultrasound-assisted thrombolysis (USAT). It is unclear whether this pattern is seen with CDT utilizing mechanical aspiration. Objectives To investigate and compare the changes in PAsP between those who underwent CDT with USAT to those with mechanical aspiration. Methods A retrospective analysis of those diagnosed with Intermediate or High-Risk PE who underwent CDT using USAT or mechanical aspiration from 7/2013 to 3/2023. The primary outcome was comparison of PAsP changes between the two modalities. Secondary outcomes include length of stay, mortality, and bleeding complications. Results A total of 142 patients were analyzed, of which 93 underwent USAT and 49 underwent mechanical thrombectomy. The mechanical thrombectomy group had significantly lower post-intervention PAsP than the USAT group (42.2 ± 13.4 mmHg vs 54.5 ± 15.2 mmHg, p < 0.0001) and a greater adjusted mean reduction (-16.5 ± 2.7 vs. -7.7 ± 3.2 mmHg. p < 0.0001). A higher frequency of a paradoxical rise in PAsP was observed in the USAT group (22 % vs 4.1 %, p < 0.001). Conclusions CDT utilizing mechanical thrombectomy was associated with lower post-interventional PAsP and greater mean negative change compared to USAT. Occasional paradoxical rises in PAsP were observed with both types of CDT, but they were more frequent with USAT. Hemodynamic monitoring should be considered after CDT. Condensed unstructured abstract We report a retrospective comparison of changes to pulmonary artery systolic pressures (PAsPs) between catheter-directed ultrasound-assisted thrombolysis (USAT) and catheter-directed mechanical thrombectomy in Intermediate and High-Risk pulmonary embolism. Those treated with mechanical thrombectomy compared to USAT had significantly lower post-interventional PAsP (42.2 ± 13.4 mmHg vs 54.5 ± 15.2 mmHg, p < 0.0001) and a greater adjusted mean reduction (-16.2 ± 2.7 vs. -7.5 ± 3.2 mmHg, p < 0.0001). A paradoxical rise in PAsP was observed more frequently in the USAT group than the mechanical thrombectomy group (22 % vs 4.1 %, p < 0.001).
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Affiliation(s)
- Patrick Ho
- Division of Pulmonary & Critical Care Medicine, Lankenau Medical Center, Wynnewood, PA, United States of America
| | - Farouk Al-Chami
- Division of Internal Medicine, Lankenau Medical Center, Wynnewood, PA, United States of America
| | - Mara Caroline
- Division of Interventional Cardiology, Lankenau Medical Center, Wynnewood, PA, United States of America
| | - Eric Gnall
- Division of Interventional Cardiology, Lankenau Medical Center, Wynnewood, PA, United States of America
| | - Joseph Bonn
- Division of Interventional Radiology, Lankenau Medical Center, Wynnewood, PA, United States of America
| | - Lee Greenspon
- Division of Pulmonary & Critical Care Medicine, Lankenau Medical Center, Wynnewood, PA, United States of America
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Lyhne MD, Dudzinski DM, Andersen A, Nielsen-Kudsk JE, Muzikansky A, Kabrhel C. Right-to-left ventricular ratio is higher in systole than diastole in patients with acute pulmonary embolism. Echocardiography 2023; 40:925-931. [PMID: 37477341 DOI: 10.1111/echo.15655] [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: 02/28/2023] [Revised: 06/11/2023] [Accepted: 07/12/2023] [Indexed: 07/22/2023] Open
Abstract
OBJECTIVES In acute pulmonary embolism (PE), the right ventricle (RV) may dilate compromising left ventricular (LV) size, thereby increasing RV/LV ratio. End-diastolic RV/LV ratio is often used in PE risk stratification, though the cause of death is RV systolic failure. We aimed to confirm our pre-clinical observations of higher RV/LV ratio in systole compared to diastole in human patients with PE. METHODS We blinded and independently analyzed echocardiograms from 606 patients with PE, evaluated by a Pulmonary Embolism Response Team. We measured RV/LV ratios in end-systole and end-diastole and fractional area change (FAC). Our primary outcome was a composite of 7-day clinical deterioration, treatment escalation or death. Secondary outcomes were 7-day and 30-day all-cause mortality. RESULTS RV/LV ratio was higher in systole compared to diastole (median 1.010 [.812-1.256] vs. .975 [.843-1.149], p < .0001). RV/LV in systole and diastole were correlated (slope = 1.30 [95% CI 1.25-1.35], p < .0001 vs. slope = 1). RV/LV ratios in both systole and diastole were associated with the primary composite outcome but not with all-cause mortality. CONCLUSION The RV/LV ratio is higher when measured in systole versus in diastole in patients with acute PE. The two approaches had similar associations with clinical outcomes, that is, it appears reasonable to measure RV/LV ratio in diastole.
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Affiliation(s)
- Mads Dam Lyhne
- Department of Emergency Medicine, Center for Vascular Emergencies, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
| | - David M Dudzinski
- Department of Cardiology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Asger Andersen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Erik Nielsen-Kudsk
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Alona Muzikansky
- Biostatistics Center, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Christopher Kabrhel
- Department of Emergency Medicine, Center for Vascular Emergencies, Massachusetts General Hospital, Boston, Massachusetts, USA
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Sifuentes AA, Goldar G, Abdul-Aziz AA, Lee R, Shore S. Mechanical Circulatory Support and Critical Care Management of High-Risk Acute Pulmonary Embolism. Interv Cardiol Clin 2023; 12:323-338. [PMID: 37290837 DOI: 10.1016/j.iccl.2023.03.004] [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: 06/10/2023]
Abstract
Hemodynamically significant pulmonary embolism (PE) remains a widely prevalent, underdiagnosed condition associated with mortality rates as high as 30%. The main driver of poor outcomes is acute right ventricular failure that remains clinically challenging to diagnose and requires critical care management. Treatment of high-risk (or massive) acute PE has traditionally included systemic anticoagulation and thrombolysis. Mechanical circulatory support, including both percutaneous and surgical approaches, are emerging as treatment options for refractory shock due to acute right ventricular failure in the setting of high-risk acute pulmonary embolism.
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Affiliation(s)
- Aaron A Sifuentes
- University of Michigan Department of Internal Medicine, 1500 East Medical Center Drive, 3116 Taubman Center, SPC 5368, Ann Arbor, MI 48109-5368, USA
| | - Ghazaleh Goldar
- Cleveland Clinic Department of Cardiovascular Medicine, Heart, Vascular, and Thoracic Institute, 9500 Euclid Avenue, Mail Code J3-4, Cleveland, OH 44195, USA
| | - Ahmad A Abdul-Aziz
- Inova Heart and Vascular Institute, 3300 Gallows Road, Critical Care Medicine, Falls Church, VA 22042, USA
| | - Ran Lee
- Cleveland Clinic Department of Cardiovascular Medicine, Heart, Vascular, and Thoracic Institute, 9500 Euclid Avenue, Mail Code J3-4, Cleveland, OH 44195, USA
| | - Supriya Shore
- University of Michigan Department of Internal Medicine, 1500 East Medical Center Drive, 3116 Taubman Center, SPC 5368, Ann Arbor, MI 48109-5368, USA.
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Mekontso Dessap A, Papazian L, Schaller M, Nseir S, Megarbane B, Haudebourg L, Timsit JF, Teboul JL, Kuteifan K, Gainnier M, Slama M, Houeto P, Lecourt L, Mercat A, Vieillard-Baron A. Inhaled nitric oxide in patients with acute respiratory distress syndrome caused by COVID-19: treatment modalities, clinical response, and outcomes. Ann Intensive Care 2023; 13:57. [PMID: 37368036 DOI: 10.1186/s13613-023-01150-9] [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: 02/04/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND Inhaled nitric oxide (iNO) has been widely used in patients with COVID-19-related acute respiratory distress syndrome (C-ARDS), though its physiological effects and outcome are debated in this setting. The objective of this cohort study was to describe the modalities of iNO use, clinical response, and outcomes in a large cohort of C-ARDS patients. METHODS Multicentre, retrospective cohort study conducted in France. RESULTS From end February to December 2020, 300 patients (22.3% female) were included, 84.5% were overweight and 69.0% had at least one comorbidity. At ICU admission, their median (IQR) age, SAPS II, and SOFA score were 66 (57-72) years, 37 (29-48), and 5 (3-8), respectively. Patients were all ventilated according to a protective ventilation strategy, and 68% were prone positioned before iNO initiation. At iNO initiation, 2%, 37%, and 61% of patients had mild, moderate, and severe ARDS, respectively. The median duration of iNO treatment was 2.8 (1.1-5.5) days with a median dosage of 10 (7-13) ppm at initiation. Responders (PaO2/FiO2 ratio improving by 20% or more) represented 45.7% of patients at 6 h from iNO initiation. The severity of ARDS was the only predictive factor associated with iNO response. Among all evaluable patients, the crude mortality was not significantly different between responders at 6 h and their counterparts. Of the 62 patients with refractory ARDS (who fulfilled extracorporeal membrane oxygenation criteria before iNO initiation), 32 (51.6%) no longer fulfilled these criteria after 6 h of iNO. The latter showed significantly lower mortality than the other half (who remained ECMO eligible), including after confounder adjustment (adjusted OR: 0.23, 95% CI 0.06, 0.89, p = 0.03). CONCLUSIONS Our study reports the benefits of iNO in improving arterial oxygenation in C-ARDS patients. This improvement seems more relevant in the most severe cases. In patients with ECMO criteria, an iNO-driven improvement in gas exchange was associated with better survival. These results must be confirmed in well-designed prospective studies.
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Affiliation(s)
- Armand Mekontso Dessap
- Service de Médecine Intensive Réanimation, Hôpitaux Universitaires Henri-Mondor, AP-HP, 94010, Créteil, France.
- CARMAS research group, Univ Paris Est Créteil, Faculté de Santé, 94010, Créteil, France.
- IMRB, INSERM, Univ Paris Est Créteil, 94010, Créteil, France.
| | - Laurent Papazian
- Médecine Intensive Réanimation, Centre d'Etudes et de Recherches sur les Services de Santé et Qualité de vie EA 3279, Hôpital Nord, Assistance Publique-Hôpitaux de Marseille, Aix-Marseille University, 13015, Marseille, France
| | | | - Saad Nseir
- Department of Intensive Care Medicine, Critical Care Center, CHU of Lille, 59000, Lille, France
| | - Bruno Megarbane
- Department of Medical and Toxicological Critical Care, Lariboisière Hospital, INSERM MURS-1144, University of Paris, AP-HP, 2 Rue Ambroise Paré, 75010, Paris, France
| | - Luc Haudebourg
- Service de Pneumologie et Réanimation Médicale du Département R3S, Groupe Hospitalier Pitié-Salpêtrière Charles Foix, AP-HP, Paris, France
| | - Jean-François Timsit
- Medical and Infectious Diseases Intensive Care Unit, Bichat-Claude Hospital and U1137, IAME Université Paris-Cité, AP-HP, 75018, Paris, France
| | - Jean-Louis Teboul
- Service de Medecine Intensive-Reanimation, Hôpital de Bicêtre, AP-HP, 78, rue du Général Leclerc, 94270, Le Kremlin-Bicêtre, France
| | - Khaldoun Kuteifan
- Service de Réanimation Médicale, Groupe Hospitalier de la Région Mulhouse Sud Alsace, 68100, Mulhouse, France
| | - Marc Gainnier
- Réanimation des Urgences, Hôpital de La Timone, Assistance Publique des Hôpitaux de Marseille, Marseille, France
| | - Michel Slama
- Medical Intensive Care Unit, CHU Sud Amiens, Amiens, France
| | | | | | - Alain Mercat
- Department of Intensive Care, University of Angers, Angers, France
| | - Antoine Vieillard-Baron
- Medical Intensive Care Unit, Ambroise Paré Hospital, AP-HP, Boulogne-Billancourt, France
- Inserm UMR 1018, Équipe 5, CESP, Villejuif, France
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10
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Pérez-Nieto OR, Gómez-Oropeza I, Quintero-Leyra A, Kammar-García A, Zamarrón-López ÉI, Soto-Estrada M, Morgado-Villaseñor LA, Meza-Comparán HD. Hemodynamic and respiratory support in pulmonary embolism: a narrative review. Front Med (Lausanne) 2023; 10:1123793. [PMID: 37332759 PMCID: PMC10272848 DOI: 10.3389/fmed.2023.1123793] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 05/19/2023] [Indexed: 06/20/2023] Open
Abstract
Pulmonary embolism is a common and potentially fatal disease, with a significant burden on health and survival. Right ventricular dysfunction and hemodynamic instability are considered two key determinants of mortality in pulmonary embolism, which can reach up to 65% in severe cases. Therefore, timely diagnosis and management are of paramount importance to ensure the best quality of care. However, hemodynamic and respiratory support, both major constituents of management in pulmonary embolism, associated with cardiogenic shock or cardiac arrest, have been given little attention in recent years, in favor of other novel advances such as systemic thrombolysis or direct oral anticoagulants. Moreover, it has been implied that current recommendations regarding this supportive care lack enough robustness, further complicating the problem. In this review, we critically discuss and summarize the current literature concerning the hemodynamic and respiratory support in pulmonary embolism, including fluid therapy, diuretics, pharmacological support with vasopressors, inotropes and vasodilators, oxygen therapy and ventilation, and mechanical circulatory support with veno-arterial extracorporeal membrane oxygenation and right ventricular assist devices, while also providing some insights into contemporary research gaps.
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Affiliation(s)
| | - Irene Gómez-Oropeza
- Department of Health Science, Universidad de las Américas Puebla, San Andrés Cholula, Puebla, Mexico
| | | | - Ashuin Kammar-García
- Dirección de Investigación, Instituto Nacional de Geriatría, Mexico City, Mexico
| | | | - Maximiliano Soto-Estrada
- Departamento de Emergencias, Hospital General de Zona 11 IMSS Delicias, Delicias, Chihuahua, Mexico
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11
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Lyhne MD, Giordano N, Dudzinski D, Torrey J, Wang G, Zheng H, Parry BA, Kalra MK, Kabrhel C. Low concordance between CTPA and echocardiography in identification of right ventricular strain in PERT patients with acute pulmonary embolism. Emerg Radiol 2023; 30:325-331. [PMID: 37084161 DOI: 10.1007/s10140-023-02130-z] [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: 01/10/2023] [Accepted: 03/29/2023] [Indexed: 04/22/2023]
Abstract
PURPOSE Right ventricular strain (RVS) is used to risk stratify patients with acute pulmonary embolism (PE) and influence treatment decisions. Guidelines suggest that either computed tomography pulmonary angiography (CTPA) or transthoracic echocardiography (TTE) can be used to assess RVS. We sought to determine how often CTPA and TTE yield discordant results and to assess the test characteristics of CTPA compared to TTE. METHODS We analyzed data from a single-center registry of PE cases severe enough to warrant activation of the hospital's Pulmonary Embolism Response Team (PERT). We defined RVS as a right ventricular to left ventricular ratio (RV/LV) ≥ 1 or radiologist's interpretation of RVS on CTPA or as the presence of either RV dilation, hypokinesis, or septal bowing on TTE. RESULTS We included 554 patients in our analysis, of whom 333 (60%) had concordant RVS findings on CTPA and TTE. Using TTE as the reference standard, CTPA had a sensitivity of 95% (95% CI 92-97%) and a specificity of 4% (95% CI 2-8%) for identifying RVS. CONCLUSIONS In a selected population of patients with acute PE for which PERT was activated, CTPA is highly sensitive but not specific for the detection of RVS when compared to TTE.
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Affiliation(s)
- Mads Dam Lyhne
- Center for Vascular Emergencies, Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark & Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Nicholas Giordano
- Center for Vascular Emergencies, Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - David Dudzinski
- Department of Cardiology, Massachusetts General Hospital, Boston, MA, USA
| | - Jasmine Torrey
- Center for Vascular Emergencies, Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Grace Wang
- Center for Vascular Emergencies, Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Hui Zheng
- Biostatistics Center, Massachusetts General Hospital, Boston, MA, USA
| | - Blair Alden Parry
- Center for Vascular Emergencies, Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Mannudeep K Kalra
- Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
| | - Christopher Kabrhel
- Center for Vascular Emergencies, Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA.
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12
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In Situ Pulmonary Arterial Thrombosis-Literature Review and Clinical Significance of a Distinct Entity. AJR Am J Roentgenol 2023:1-12. [PMID: 36856299 DOI: 10.2214/ajr.23.28996] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Filling defects identified in the pulmonary arterial tree are commonly presumed to represent an embolic phenomenon originating from thrombi formed in remote veins, particularly lower-extremity deep venous thrombosis (DVT). However, accumulating evidence supports an underappreciated cause for pulmonary arterial thrombosis (PAT), namely, de novo thrombogenesis-where thrombosis arises within the pulmonary arteries in the absence of DVT. Although historically underrecognized, in situ PAT has become of heightened importance with the emergence of SARS-CoV-2 infection. In situ PAT is attributed to endothelial dysfunction, systemic inflammation, and acute lung injury, and has been described in a range of conditions including COVID-19, trauma, acute chest syndrome in sickle cell disease, pulmonary infections, and severe pulmonary arterial hypertension. The distinction between pulmonary embolus and in situ PAT may have important implications regarding management decisions and clinical outcomes. In this review, we summarize the pathophysiology, imaging appearances, and management of in situ PAT in various clinical situations. This understanding will promote optimal tailored treatment strategies for this increasingly recognized entity.
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13
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Lyhne MD, Witkin AS, Dasegowda G, Tanayan C, Kalra MK, Dudzinski DM. Evaluating cardiopulmonary function following acute pulmonary embolism. Expert Rev Cardiovasc Ther 2022; 20:747-760. [PMID: 35920239 DOI: 10.1080/14779072.2022.2108789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
INTRODUCTION Pulmonary embolism is a common cause of cardiopulmonary mortality and morbidity worldwide. Survivors of acute pulmonary embolism may experience dyspnea, report reduced exercise capacity, or develop overt pulmonary hypertension. Clinicians must be alert for these phenomena and appreciate the modalities and investigations available for evaluation. AREAS COVERED In this review, the current understanding of available contemporary imaging and physiologic modalities is discussed, based on available literature and professional society guidelines. The purpose of the review is to provide clinicians with an overview of these modalities, their strengths and disadvantages, and how and when these investigations can support the clinical work-up of patients post-pulmonary embolism. EXPERT OPINION Echocardiography is a first test in symptomatic patients post-pulmonary embolism, with ventilation/perfusion scanning vital to determination of whether there is chronic residual emboli. The role of computed tomography and magnetic resonance in assessing the pulmonary arterial tree in post-pulmonary embolism patients is evolving. Functional testing, in particular cardiopulmonary exercise testing, is emerging as an important modality to quantify and determine cause of functional limitation. It is possible that future investigations of the post-pulmonary embolism recovery period will better inform treatment decisions for acute pulmonary embolism patients.
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Affiliation(s)
- Mads Dam Lyhne
- Department of Cardiology, Massachusetts General Hospital, Boston, MA, USA.,Department of Anesthesiology and Intensive Care Medicine, Aarhus University Hospital and Department of Clinical Medicine, Aarhus University, Denmark
| | - Alison S Witkin
- Department of Pulmonary Medicine and Critical Care, Massachusetts General Hospital, Boston, MA, USA
| | - Giridhar Dasegowda
- Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
| | - Christopher Tanayan
- Cardiovascular Performance Program, Massachusetts General Hospital, Boston, MA, USA
| | - Mannudeep K Kalra
- Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
| | - David M Dudzinski
- Department of Cardiology, Massachusetts General Hospital, Boston, MA, USA.,Echocardiography Laboratory, Massachusetts General Hospital, Boston, MA, USA
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14
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Severe COVID-19 Is Characterised by Perturbations in Plasma Amines Correlated with Immune Response Markers, and Linked to Inflammation and Oxidative Stress. Metabolites 2022; 12:metabo12070618. [PMID: 35888742 PMCID: PMC9321395 DOI: 10.3390/metabo12070618] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/25/2022] [Accepted: 06/26/2022] [Indexed: 02/01/2023] Open
Abstract
The COVID-19 pandemic raised a need to characterise the biochemical response to SARS-CoV-2 infection and find biological markers to identify therapeutic targets. In support of these aims, we applied a range of LC-MS platforms to analyse over 100 plasma samples from patients with varying COVID-19 severity and with detailed clinical information on inflammatory responses (>30 immune markers). The first publication in a series reports the results of quantitative LC-MS/MS profiling of 56 amino acids and derivatives. A comparison between samples taken from ICU and ward patients revealed a notable increase in ten post-translationally modified amino acids that correlated with markers indicative of an excessive immune response: TNF-alpha, neutrophils, markers for macrophage, and leukocyte activation. Severe patients also had increased kynurenine, positively correlated with CRP and cytokines that induce its production. ICU and ward patients with high IL-6 showed decreased levels of 22 immune-supporting and anti-oxidative amino acids and derivatives (e.g., glutathione, GABA). These negatively correlated with CRP and IL-6 and positively correlated with markers indicative of adaptive immune activation. Including corresponding alterations in convalescing ward patients, the overall metabolic picture of severe COVID-19 reflected enhanced metabolic demands to maintain cell proliferation and redox balance, alongside increased inflammation and oxidative stress.
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15
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Toomey D, O'Brien M, Hayes BD, Wilcox S. A retrospective review of implementation of an inhaled epoprostenol protocol in the emergency department. Am J Emerg Med 2022; 58:210-214. [PMID: 35709539 DOI: 10.1016/j.ajem.2022.06.009] [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: 03/02/2022] [Revised: 05/27/2022] [Accepted: 06/03/2022] [Indexed: 10/18/2022] Open
Abstract
INTRODUCTION Inhaled epoprostenol is a selective pulmonary vasodilator that has shown a potentially broad number of applications in the management of critically ill patients. To date, the vast majority of the literature with regard to efficacy, indications for use, and adverse effects of inhaled epoprostenol is focused on use of this agent in critical care settings, with relatively little literature describing use of inhaled epoprostenol in the Emergency Department. This retrospective review sought to examine instances in which inhaled epoprostenol was administered in the Emergency Department of a tertiary-care, Level I trauma center following implementation of a clinical pathway for administration of this medication for cases of refractory hypoxemia, RV dysfunction, and refractory hypoxemia. Primary outcomes were monitoring for adverse effects (i.e. hypotension), trend in FiO2 requirement over time, and clinical indication for initiation of inhaled epoprostenol. METHODS An automated review was performed to query cases in which inhaled epoprostenol had been initiated in the Emergency Department following adoption of the inhaled epoprostenol clinical pathway. Cases were excluded if the medication was initiated in the prehospital setting, ordered but not administered, or administered for a period of <1 h. Vital signs and co-administration of vasopressors were followed before and following epoprostenol administration to assess for change over time. Clinical indication of epoprostenol administration was assessed via manual chart review. RESULTS Inhaled epoprostenol was administered in 20 instances, with 15 cases ultimately meeting inclusion criteria. There were no cases of clinically significant hypotension (MAP <65) in any of the cases in which inhaled epoprostenol was administered in the Emergency Department, and mean vasopressor requirement did not increase over time. A majority of patients saw a reduction in FiO2 requirement following administration of inhaled epoprostenol. The most common indication for initiation of inhaled epoprostenol based on manual chart review was pulmonary embolism. DISCUSSION In this review of cases in which inhaled epoprostenol was administered following adoption of a clinical pathway for medication administration, there were no cases of hypotension or other adverse effects that appear to be attributable to medication administration. Pulmonary embolism and refractory hypoxemia were the most common noted indications for administration of inhaled epoprostenol. Further research is warranted regarding development of clinical protocols for administration of inhaled pulmonary vasodilators in the Emergency Department setting.
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Affiliation(s)
- David Toomey
- Department of Emergency Medicine, Massachusetts General Hospital, United States of America.
| | - Michael O'Brien
- Department of Emergency Medicine, Massachusetts General Hospital, United States of America
| | - Bryan D Hayes
- Department of Emergency Medicine, Massachusetts General Hospital, United States of America
| | - Susan Wilcox
- Department of Emergency Medicine, Massachusetts General Hospital, United States of America; Department of Critical Care Medicine, Massachusetts General Hospital, United States of America
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16
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Buckley JR, Wible BC. In-Hospital Mortality and Related Outcomes for Elevated Risk Acute Pulmonary Embolism Treated With Mechanical Thrombectomy Versus Routine Care. J Intensive Care Med 2021; 37:877-882. [PMID: 34397286 DOI: 10.1177/08850666211036446] [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] [Indexed: 11/17/2022]
Abstract
PURPOSE To compare in-hospital mortality and other hospitalization related outcomes of elevated risk patients (Pulmonary Embolism Severity Index [PESI] score of 4 or 5, and, European Society of Cardiology [ESC] classification of intermediate-high or high risk) with acute central pulmonary embolism (PE) treated with mechanical thrombectomy (MT) using the Inari FlowTriever device versus those treated with routine care (RC). MATERIALS AND METHODS Retrospective data was collected of all patients with acute, central PE treated at a single institution over 2 concurrent 18-month periods. All collected patients were risk stratified using the PESI and ESC Guidelines. The comparison was made between patients with acute PE with PESI scores of 4 or 5, and, ESC classification of intermediate-high or high risk based on treatment type: MT and RC. The primary endpoint evaluated was in-hospital mortality. Secondary endpoints included intensive care unit (ICU) length of stay, total hospital length of stay, and 30-day readmission. RESULTS Fifty-eight patients met inclusion criteria, 28 in the MT group and 30 in the RC group. Most RC patients were treated with systemic anticoagulation alone (24 of 30). In-hospital mortality was significantly lower for the MT group than for the RC group (3.6% vs 23.3%, P < .05), as was the average ICU length of stay (2.1 ± 1.2 vs 6.1 ± 8.6 days, P < .05). Total hospital length of stay and 30-day readmission rates were similar between MT and RC groups. CONCLUSION Initial retrospective comparison suggests MT can improve in-hospital mortality and decrease ICU length of stay for patients with acute, central PE of elevated risk (PESI 4 or 5, and, ESC intermediate-high or high risk).
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Affiliation(s)
- Jennifer R Buckley
- 24091Saint Luke's Hospital, Kansas City, MO, USA.,12273University of Missouri Kansas City, Kansas City, MO, USA
| | - Brandt C Wible
- 24091Saint Luke's Hospital, Kansas City, MO, USA.,12273University of Missouri Kansas City, Kansas City, MO, USA
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17
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Lyhne MD, Kabrhel C, Giordano N, Andersen A, Nielsen-Kudsk JE, Zheng H, Dudzinski DM. The echocardiographic ratio tricuspid annular plane systolic excursion/pulmonary arterial systolic pressure predicts short-term adverse outcomes in acute pulmonary embolism. Eur Heart J Cardiovasc Imaging 2021; 22:285-294. [PMID: 33026070 DOI: 10.1093/ehjci/jeaa243] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 08/07/2020] [Indexed: 12/22/2022] Open
Abstract
AIMS Right ventricular (RV) failure causes death from acute pulmonary embolism (PE), due to a mismatch between RV systolic function and increased RV afterload. We hypothesized that an echocardiographic ratio of this mismatch [RV systolic function by tricuspid annular plane systolic excursion (TAPSE) divided by pulmonary arterial systolic pressure (PASP)] would predict adverse outcomes better than each measurement individually, and would be useful for risk stratification in intermediate-risk PE. METHODS AND RESULTS This was a retrospective analysis of a single academic centre Pulmonary Embolism Response Team registry from 2012 to 2019. All patients with confirmed PE and a formal transthoracic echocardiogram performed within 2 days were included. All echocardiograms were analysed by an observer blinded to the outcome. The primary endpoint was a 7-day composite outcome of death or haemodynamic deterioration. Secondary outcomes were 7- and 30-day all-cause mortality. A total of 627 patients were included; 135 met the primary composite outcome. In univariate analysis, the TAPSE/PASP was associated with our primary outcome [odds ratio = 0.028, 95% confidence interval (CI) 0.010-0.087; P < 0.0001], which was significantly better than either TAPSE or PASP alone (P = 0.017 and P < 0.0001, respectively). A TAPSE/PASP cut-off value of 0.4 was identified as the optimal value for predicting adverse outcome in PE. TAPSE/PASP predicted both 7- and 30-day all-cause mortality, while TAPSE and PASP did not. CONCLUSION A combined echocardiographic ratio of RV function to afterload is superior in prediction of adverse outcome in acute intermediate-risk PE. This ratio may improve risk stratification and identification of the patients that will suffer short-term deterioration after intermediate-risk PE.
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Affiliation(s)
- Mads D Lyhne
- Department of Emergency Medicine, Center for Vascular Emergencies, Massachusetts General Hospital, 0 Emerson Place, MA 02114, USA.,Department of Cardiology, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, 8200, Aarhus N, Denmark.,Department of Cardiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
| | - Christopher Kabrhel
- Department of Emergency Medicine, Center for Vascular Emergencies, Massachusetts General Hospital, 0 Emerson Place, MA 02114, USA
| | - Nicholas Giordano
- Department of Emergency Medicine, Center for Vascular Emergencies, Massachusetts General Hospital, 0 Emerson Place, MA 02114, USA
| | - Asger Andersen
- Department of Cardiology, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Jens Erik Nielsen-Kudsk
- Department of Cardiology, Aarhus University Hospital, Palle Juul Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Hui Zheng
- Biostatistics Center, Massachusetts General Hospital, 50 Staniford Street, Boston, MA 02114, USA
| | - David M Dudzinski
- Department of Emergency Medicine, Center for Vascular Emergencies, Massachusetts General Hospital, 0 Emerson Place, MA 02114, USA.,Department of Cardiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
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18
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Lyhne MD, Dragsbaek SJ, Hansen JV, Schultz JG, Andersen A, Nielsen-Kudsk JE. Levosimendan, milrinone, and dobutamine in experimental acute pulmonary embolism. Pulm Circ 2021; 11:20458940211022977. [PMID: 34178307 PMCID: PMC8207288 DOI: 10.1177/20458940211022977] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 05/16/2021] [Indexed: 12/30/2022] Open
Abstract
Acute pulmonary embolism is a frequent condition in emergency medicine and potentially fatal. Cause of death is right ventricular failure due to increased right ventricular afterload from both pulmonary vascular obstruction and vasoconstriction. Inodilators are interesting drugs of choice as they may improve right ventricular function and lower its afterload. We aimed to investigate the cardiovascular effects of three clinically relevant inodilators: levosimendan, milrinone, and dobutamine in acute pulmonary embolism. We conducted a randomized, blinded, animal study using 18 female pigs. Animals received large autologous pulmonary embolism until doubling of baseline mean pulmonary arterial pressure and were randomized to increasing doses of each inodilator. Effects were evaluated with bi-ventricular pressure–volume loop recordings, right heart catheterization, and blood gas analyses. Induction of pulmonary embolism increased right ventricular afterload and pulmonary pressure (p < 0.05) causing right ventricular dysfunction. Levosimendan and milrinone showed beneficial hemodynamic profiles by lowering right ventricular pressures and volume (p < 0.001) and improved right ventricular function and cardiac output (p < 0.05) without increasing right ventricular mechanical work. Dobutamine increased right ventricular pressure and function (p < 0.01) but at a cost of increased mechanical work at the highest doses, showing an adverse hemodynamic profile. In a porcine model of acute pulmonary embolism, levosimendan and milrinone reduced right ventricular afterload and improved right ventricular function, whereas dobutamine at higher doses increased right ventricular afterload and right ventricular mechanical work. The study motivates clinical testing of inodilators in patients with acute pulmonary embolism and right ventricular dysfunction.
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Affiliation(s)
- Mads D Lyhne
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Simone J Dragsbaek
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jacob V Hansen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jacob G Schultz
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Asger Andersen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jens Erik Nielsen-Kudsk
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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19
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Nitrite and tempol combination promotes synergic effects and alleviates right ventricular wall stress during acute pulmonary thromboembolism. Nitric Oxide 2021; 115:23-29. [PMID: 34133975 DOI: 10.1016/j.niox.2021.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/29/2021] [Accepted: 06/11/2021] [Indexed: 11/22/2022]
Abstract
INTRODUCTION The mechanical obstruction and pulmonary vasoconstriction are major determinants of the sudden right ventricular (RV) afterload increases observed during acute pulmonary thromboembolism (APT). Vasodilators and antioxidants agents have been shown to mitigate pulmonary hypertension. We examined whether sodium nitrite and the antioxidant tempol combination could be advantageous in an APT sheep model. METHODS APT was induced in anesthetized sheep by autologous blood clots (250 mg/kg) into the right atrium. Thirty minutes after APT induction, the animals received a continuous infusion of tempol (1.0 mg/kg/min), increasing sodium nitrite infusion (5, 15, and 50 μmol/kg), or a simultaneous combination of both drugs. Saline was used as a control treatment. Hemodynamic measurements were carried out every 15 min. Also, whole blood nitrite and serum 8-isoprostanes levels were measured. RESULTS APT induced sustained pulmonary hypertension, increased dp/dtmax, and rate pressure product (RPP). Nitrite or tempol treatments attenuated these increases (P < 0.05). When both drugs were combined, we found a robust reduction in the RV RPP compared with the treatments alone (P < 0.05). The sole nitrite infusion increased blood nitrite concentrations by 35 ± 6 μM (P < 0.05), whereas the nitrite and tempol combination produced higher blood nitrite concentrations by approximately 54 ± 7 μM. Tempol or nitrite infusions, both alone or combined, blunted the increases in 8-isoprostane concentrations observed after APT. CONCLUSIONS Nitrite and tempol combination protects against APT-induced RV wall stress. The association of both drugs may offer an advantage to treat RV failure during severe APT.
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20
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Oxygen Therapy Lowers Right Ventricular Afterload in Experimental Acute Pulmonary Embolism. Crit Care Med 2021; 49:e891-e901. [PMID: 33870917 DOI: 10.1097/ccm.0000000000005057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To investigate if oxygen could unload the right ventricle and improve right ventricle function in a porcine model mimicking intermediate-high risk acute pulmonary embolism. DESIGN Controlled, blinded, animal study. SETTING Tertiary university hospital, animal research laboratory. SUBJECTS Female, Danish pigs (n = 16, approximately 60 kg). INTERVENTIONS Acute autologous pulmonary embolism was induced until doubling of baseline mean pulmonary arterial pressure. Group 1 animals (n = 8) received increasing Fio2 (40%, 60%, and 100%) for time intervals of 15 minutes returning to atmospheric air between each level of Fio2. In group 2 (n = 8), the effects of Fio2 40% maintained over 75 minutes were studied. In both groups, pulmonary vasodilatation from inhaled nitric oxide (40 parts per million) was used as a positive control. MEASUREMENTS AND MAIN RESULTS Effects were evaluated by biventricular pressure-volume loop recordings, right heart catheterization, and arterial and mixed venous blood gasses. Pulmonary embolism increased mean pulmonary arterial pressure from 15 ± 4 to 33 ± 6 mm Hg (p = 0.0002) and caused right ventricle dysfunction (p < 0.05) with troponin release (p < 0.0001). In group 1, increasing Fio2 lowered mean pulmonary arterial pressure (p < 0.0001) and pulmonary vascular resistance (p = 0.0056) and decreased right ventricle volumes (p = 0.0018) and right ventricle mechanical work (p = 0.034). Oxygenation was improved and pulmonary shunt was lowered (p < 0.0001). Maximal hemodynamic effects were seen at Fio2 40% with no additional benefit from higher fractions of oxygen. In group 2, the effects of Fio2 40% were persistent over 75 minutes. Supplemental oxygen showed the same pulmonary vasodilator efficacy as inhaled nitric oxide (40 parts per million). No adverse effects were observed. CONCLUSIONS In a porcine model mimicking intermediate-high risk pulmonary embolism, oxygen therapy reduced right ventricle afterload and lowered right ventricle mechanical work. The effects were immediately present and persistent and were similar to inhaled nitric oxide. The intervention is easy and safe. The study motivates extended clinical evaluation of supplemental oxygen in acute pulmonary embolism.
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21
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Andersen A, Waziri F, Schultz JG, Holmboe S, Becker SW, Jensen T, Søndergaard HM, Dodt KK, May O, Mortensen UM, Kim WY, Mellemkjær S, Nielsen-Kudsk JE. Pulmonary vasodilation by sildenafil in acute intermediate-high risk pulmonary embolism: a randomized explorative trial. BMC Pulm Med 2021; 21:72. [PMID: 33639897 PMCID: PMC7916297 DOI: 10.1186/s12890-021-01440-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 02/19/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To investigate if acute pulmonary vasodilation by sildenafil improves right ventricular function in patients with acute intermediate-high risk pulmonary embolism (PE). METHODS Single center, explorative trial. Patients with PE were randomized to a single oral dose of sildenafil 50 mg (n = 10) or placebo (n = 10) as add-on to conventional therapy. The time from hospital admission to study inclusion was 2.3 ± 0.7 days. Right ventricular function was evaluated immediately before and shortly after (0.5-1.5 h) randomization by right heart catheterization (RHC), trans-thoracic echocardiography (TTE), and cardiac magnetic resonance (CMR). The primary efficacy endpoint was cardiac index measured by CMR. RESULTS Patients had acute intermediate-high risk PE verified by computed tomography pulmonary angiography, systolic blood pressure of 135 ± 18 (mean ± SD) mmHg, increased right ventricular/left ventricular ratio 1.1 ± 0.09 and increased troponin T 167 ± 144 ng/L. Sildenafil treatment did not improve cardiac index compared to baseline (0.02 ± 0.36 l/min/m2, p = 0.89) and neither did placebo (0.00 ± 0.34 l/min/m2, p = 0.97). Sildenafil lowered mean arterial blood pressure (- 19 ± 10 mmHg, p < 0.001) which was not observed in the placebo group (0 ± 9 mmHg, p = 0.97). CONCLUSION A single oral dose of sildenafil 50 mg did not improve cardiac index but lowered systemic blood pressure in patients with acute intermediate-high risk PE. The time from PE to intervention, a small patient sample size and low pulmonary vascular resistance are limitations of this study that should be considered when interpreting the results. TRIAL REGISTRATION The trial was retrospectively registered at www.clinicaltrials.gov (NCT04283240) February 2nd 2020, https://clinicaltrials.gov/ct2/show/NCT04283240?term=NCT04283240&draw=2&rank=1 .
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Affiliation(s)
- Asger Andersen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark.
| | - Farhad Waziri
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Jacob Gammelgaard Schultz
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Sarah Holmboe
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | | | - Tage Jensen
- Department of Internal Medicine, Region Hospital of Randers, Randers, Denmark
| | | | - Karen Kaae Dodt
- Department of Internal Medicine, Region Hospital of Horsens, Horsens, Denmark
| | - Ole May
- Department of Internal Medicine, Region Hospital of Herning, Herning, Denmark
| | - Ulrik Markus Mortensen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Won Yong Kim
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Søren Mellemkjær
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Jens Erik Nielsen-Kudsk
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
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Intermediate-High Risk Pulmonary Embolism: The Use of Riociguat and Inferior Vena Cava Filter in a Situation of Recurrent Embolism following Insufficient Anticoagulation and Fibrinolytic Therapy. Case Rep Anesthesiol 2020; 2020:4219616. [PMID: 33149952 PMCID: PMC7603563 DOI: 10.1155/2020/4219616] [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: 02/01/2020] [Revised: 09/10/2020] [Accepted: 09/24/2020] [Indexed: 11/30/2022] Open
Abstract
Pulmonary embolism (PE) is associated with serious morbidity and mortality. In this case report, we describe a hemodynamically stable patient with submassive PE and a large thrombus in the inferior vena cava (IVC) protruding into the right atrium (RA), complicated by severe respiratory failure, elevated troponin T (TnT), and right ventricular (RV) dysfunction. The patient was stratified as intermediate-high risk of early death. Important issues regarding the initial choice of anticoagulation, rescue thrombolytic therapy, and benefits of adding riociguat to stimulate the nitric oxide-soluble guanylate cyclase-cyclic guanosine monophosphate (NO-sGC-cGMP) pathway to improve the RV function are discussed. Finally, we address appropriate timing and the use of IVC filter in a situation of recurrent PE following anticoagulation and fibrinolytic therapy.
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Abstract
OBJECTIVES To compare the hemodynamic effects of increased versus decreased preload in a porcine model of acute intermediate-risk pulmonary embolism. DESIGN Randomized, controlled animal study. SETTING Tertiary medical center, animal research laboratory. SUBJECTS Female, Danish slaughter pigs (n = 22, ~ 60 kg). INTERVENTIONS Acute pulmonary embolism was induced by large emboli made from clotting of autologous blood. Sixteen animals were randomized to either fluid loading (n = 8, isotonic saline, 1 L/hr for 2 hr) or diuretic treatment (n = 8, furosemide, 40 mg every 30 min, total 160 mg) and compared with a vehicle group (n = 6, no treatment). MEASUREMENTS AND MAIN RESULTS Hemodynamics were evaluated at baseline, after pulmonary embolism and after each dose by biventricular pressure-volume loops, invasive pressures, diuretic output, respiratory variables, and blood analysis. Pulmonary embolism increased mean pulmonary arterial pressure (p < 0.0001), pulmonary vascular resistance (p = 0.008), right ventricular arterial elastance (p = 0.003), and right ventricular end-systolic volume (p = 0.020) while right ventricular stroke volume and right ventricular ejection fraction were decreased (p = 0.047 and p = 0.0003, respectively) compared with baseline. Fluid loading increased right ventricular end-diastolic volume (+31 ± 13 mL; p = 0.004), right ventricular stroke volume (+23 ± 10 mL; p = 0.009), cardiac output (+2,021 ± 956 mL; p = 0.002), and right ventricular ejection fraction (+7.6% ± 1.5%; p = 0.032), whereas pulmonary vascular resistance decreased (-202 ± 65 dynes; p = 0.020) compared with vehicle. Diuretic treatment decreased right ventricular end-diastolic volume (-84 ± 11 mL; p < 0.001), right ventricular stroke volume (-40 ± 6 mL; p = 0.001), cardiac output (-3,327 ± 451 mL; p = 0.005), and mean pulmonary arterial pressure (-7 ± 1 mm Hg; p < 0.001) and increased right ventricular end-systolic elastance (+0.72 ± 0.2 mm Hg/mL; p < 0.001) and systemic vascular resistance (+1,812 ± 767 dynes; p < 0.001) with no effects on mean arterial pressure. CONCLUSIONS In a porcine model of acute intermediate-risk pulmonary embolism, fluid loading increased right ventricular preload and right ventricular stroke volume, whereas diuretics decreased right ventricular preload and right ventricular stroke volume without affecting mean arterial pressure.
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Kramer A, Mortensen CS, Schultz JG, Lyhne MD, Andersen A, Nielsen-Kudsk JE. Inhaled nitric oxide has pulmonary vasodilator efficacy both in the immediate and prolonged phase of acute pulmonary embolism. EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2020; 10:2048872620918713. [PMID: 32662283 DOI: 10.1177/2048872620918713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 03/24/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND Inhaled nitric oxide (iNO) effectively reduces right ventricular afterload when administered in the immediate phase of acute pulmonary embolism (PE) in preclinical animal models. In a porcine model of intermediate-risk PE, we aimed to investigate whether iNO has pulmonary vasodilator efficacy both in the immediate and prolonged phase of acute PE. METHODS Anesthetized pigs (n = 18) were randomized into three subgroups. An acute PE iNO-group (n = 6) received iNO at 40 ppm at one, three, six, nine and 12 hours after onset of PE. Vehicle animals (n = 6) received PE, but no active treatment. A third group of sham animals (n = 6) received neither PE nor treatment. Animals were evaluated using intravascular pressures, respiratory parameters, biochemistry and intracardiac pressure-volume measurements. RESULTS The administration of PE increased mean pulmonary artery pressure (mPAP) (vehicle vs sham; 33.3 vs 17.7 mmHg, p < 0.0001), pulmonary vascular resistance (vehicle vs sham; 847.5 vs 82.0 dynes, p < 0.0001) and right ventricular arterial elastance (vehicle vs sham; 1.2 vs 0.2 mmHg/ml, p < 0.0001). Significant mPAP reduction by iNO was preserved at 12 hours after the onset of acute PE (vehicle vs iNO; 0.5 vs -3.5 mmHg, p < 0.0001). However, this response was attenuated over time (p = 0.0313). iNO did not affect the systemic circulation. CONCLUSIONS iNO is a safe and effective pulmonary vasodilator both in the immediate and prolonged phase of acute PE in an in-vivo porcine model of intermediate-risk PE.
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Affiliation(s)
- Anders Kramer
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Christian Schmidt Mortensen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Jacob Gammelgaard Schultz
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Mads Dam Lyhne
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Asger Andersen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Jens Erik Nielsen-Kudsk
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
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Bhalla A, Attaran R. Mechanical Circulatory Support to Treat Pulmonary Embolism: Venoarterial Extracorporeal Membrane Oxygenation and Right Ventricular Assist Devices. Tex Heart Inst J 2020; 47:202-206. [PMID: 32997787 DOI: 10.14503/thij-19-7025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Mechanical circulatory support may help patients with massive pulmonary embolism who are not candidates for systemic thrombolysis, pulmonary embolectomy, or catheter-directed therapy, or in whom these established interventions have failed. Little published literature covers this topic, which led us to compare outcomes of patients whose massive pulmonary embolism was managed with the use of venoarterial extracorporeal membrane oxygenation (VA-ECMO) or a right ventricular assist device (RVAD). We searched the medical literature from January 1990 through September 2018 for reports of adults hospitalized for massive or high-risk pulmonary embolism complicated by hemodynamic instability, and who underwent VA-ECMO therapy or RVAD placement. Primary outcomes included weaning from mechanical circulatory support and discharge from the hospital. We found 16 reports that included 181 patients (164 VA-ECMO and 17 RVAD). All RVAD recipients were successfully weaned from support, as were 122 (74%) of the VA-ECMO patients. Sixteen (94%) of the RVAD patients were discharged from the hospital, as were 120 (73%) of the VA-ECMO patients. Of note, the 8 RVAD patients who had an Impella RP System were all weaned and discharged. For patients with massive pulmonary embolism who are not candidates for conventional interventions or whose conditions are refractory, mechanical circulatory support in the form of RVAD placement or ECMO may be considered. Larger comparative studies are needed.
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Affiliation(s)
- Aneil Bhalla
- Section of Cardiovascular Medicine, Yale University School of Medicine, Yale New Haven Hospital, New Haven, Connecticut 06519
| | - Robert Attaran
- Section of Cardiovascular Medicine, Yale University School of Medicine, Yale New Haven Hospital, New Haven, Connecticut 06519
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Lyhne MD, Schultz JG, Kramer A, Mortensen CS, Nielsen-Kudsk JE, Andersen A. Right ventricular adaptation in the critical phase after acute intermediate-risk pulmonary embolism. EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2020; 10:2048872620925253. [PMID: 32436719 DOI: 10.1177/2048872620925253] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 04/21/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The haemodynamic response following acute, intermediate-risk pulmonary embolism is not well described. We aimed to describe the cardiovascular changes in the initial, critical phase 0-12 hours after acute pulmonary embolism in an in-vivo porcine model. METHODS Pigs were randomly allocated to pulmonary embolism (n = 6) or sham (n = 6). Pulmonary embolism was administered as autologous blood clots (20 × 1 cm) until doubling of mean pulmonary arterial pressure or mean pulmonary arterial pressure was greater than 34 mmHg. Sham animals received saline. Cardiopulmonary changes were evaluated for 12 hours after intervention by biventricular pressure-volume loop recordings, invasive pressure measurements, arterial and central venous blood gas analyses. RESULTS Mean pulmonary arterial pressure increased (P < 0.0001) and stayed elevated for 12 hours in the pulmonary embolism group compared to sham. Pulmonary vascular resistance and right ventricular arterial elastance (right ventricular afterload) were increased in the first 11 and 6 hours, respectively, after pulmonary embolism (P < 0.01 for both) compared to sham. Right ventricular ejection fraction was reduced (P < 0.01) for 8 hours, whereas a near-significant reduction in right ventricular stroke volume was observed (P = 0.06) for 4 hours in the pulmonary embolism group compared to sham. Right ventricular ventriculo-arterial coupling was reduced (P < 0.05) for 6 hours following acute pulmonary embolism despite increased right ventricular mechanical work in the pulmonary embolism group (P < 0.01) suggesting right ventricular failure. CONCLUSIONS In a porcine model of intermediate-risk pulmonary embolism, the increased right ventricular afterload caused initial right ventricular ventriculo-arterial uncoupling and dysfunction. After approximately 6 hours, the right ventricular afterload returned to pre-pulmonary embolism values and right ventricular function improved despite a sustained high pulmonary arterial pressure. These results suggest an initial critical and vulnerable phase of acute pulmonary embolism before haemodynamic adaptation.
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Affiliation(s)
- Mads Dam Lyhne
- Department of Cardiology and Department of Clinical Medicine, Aarhus University Hospital, Denmark
| | | | - Anders Kramer
- Department of Cardiology and Department of Clinical Medicine, Aarhus University Hospital, Denmark
| | | | - Jens Erik Nielsen-Kudsk
- Department of Cardiology and Department of Clinical Medicine, Aarhus University Hospital, Denmark
| | - Asger Andersen
- Department of Cardiology and Department of Clinical Medicine, Aarhus University Hospital, Denmark
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