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Woo IS, Kim JH. Predictive value of left atrial volumes assessed using real-time three-dimensional echocardiography for pulmonary hypertension in dogs with myxomatous mitral valve disease. Front Vet Sci 2024; 11:1441839. [PMID: 39220767 PMCID: PMC11362095 DOI: 10.3389/fvets.2024.1441839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 07/23/2024] [Indexed: 09/04/2024] Open
Abstract
Introduction Left atrial volume (LAV) obtained using real-time three-dimensional echocardiography (RT3DE) is an independent predictor of post-capillary pulmonary hypertension (PH) in humans; however, no studies have investigated LAV obtained using RT3DE as a predictor of post-capillary PH in dogs with myxomatous mitral valve disease (MMVD). Therefore, we aimed to evaluate the clinical applicability of LAV obtained using RT3DE compared to that obtained using two-dimensional echocardiography (2DE) in dogs with MMVD, with or without PH. Methods Medical records and echocardiographic images of 237 privately owned dogs with naturally occurring MMVD with or without PH were retrospectively reviewed. A total of 49 privately owned dogs with naturally occurring MMVD, with or without PH, were finally included (35 MMVD without PH, 14 MMVD with PH). The LAV and left ventricular volumes were obtained using 2DE and RT3DE. Echocardiographic parameters were analyzed to identify independent predictors of post-capillary PH. Results We found that the left atrial and left ventricular volumes obtained using 2DE and RT3DE indexed to body weight and several 2DE-derived variables were univariately associated with post-capillary PH. Furthermore, multivariable logistic regression analysis revealed that the RT3DE minimum LAV indexed to body weight (LAVi min) was the only significant independent predictor of post-capillary PH (odds ratio, 12.86; 95% confidence interval [CI], 2.40-68.99; p = 0.003), with the highest area under the curve value of 0.86 (95% CI, 0.75-0.96; p < 0.001). Discussion In conclusion, LAV indexed to body weight obtained using 2DE and RT3DE, can be a useful predictor of post-capillary PH in dogs with MMVD. In particular, the RT3DE LAVi min was observed to be the strongest predictor of post-capillary PH.
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Affiliation(s)
| | - Jung-Hyun Kim
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
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Bergman ZR, Kiberenge RK, Bianco R, Beilman G, Brophy CM, Hocking KM, Alvis BD, Wise ES. The Effect of Fluid Pre-loading on Vital Signs and Hemodynamic Parameters in a Porcine Model of Lipopolysaccharide-Induced Endotoxemia. Cureus 2023; 15:e43103. [PMID: 37692606 PMCID: PMC10483090 DOI: 10.7759/cureus.43103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Background Animal models of distributive hypotension and resuscitation allow the assessment of hemodynamic monitoring modalities and resuscitation strategies. The fluid-first paradigm for resuscitation is currently being challenged with clinical trials. In this investigation, venous return and perfusion are assessed, and full hemodynamics are characterized, in a porcine model of endotoxemic hypotension with and without fluid pre-loading. Methods Two groups of six pigs had the induction of standardized endotoxemic hypotension ("critical hypotension"). Group 1 underwent four 10 cc/kg crystalloid boluses, and Group 2 was not fluid pre-resuscitated. Both groups underwent progressive norepinephrine (NE) up-titration to 0.25 mcg/kg/minute over 30 minutes. Vital signs, central parameters, and laboratory values were obtained at baseline, "critical hypotension," after each bolus and during NE administration. Results Endotoxemia decreased the systemic vascular resistance (SVR) in Group 1 (1031±106 dyn/s/cm-5 versus 738±258 dyn/s/cm-5; P=0.03) and Group 2 (1121±196 dyn/s/cm-5 versus 759±342 dyn/s/cm-5; P=0.003). In Group 1, the four fluid boluses decreased heart rate (HR), pulmonary capillary wedge pressure (PCWP), and central venous pressure (CVP) (P<0.05). No changes were observed in blood pressure, cardiac output (CO), or lactate. NE up-titration increased HR in Group 1 and decreased CVP in both groups. Higher final CVP (11 {3} versus 4 {4} mmHg; P=0.01) and PCWP (5 {1} versus 2 {2} mmHg; P=0.005) values were observed in Group 1 relative to Group 2, reflecting increased venous return. Conclusions Porcine endotoxemic hypotension and resuscitation were robustly characterized. In this model, fluid loading improved venous return with NE, though perfusion (CO) was preserved by increased NE-induced chronotropy.
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Affiliation(s)
- Zachary R Bergman
- Surgery, University of Minnesota School of Medicine, Minneapolis, USA
| | | | - Richard Bianco
- Surgery, University of Minnesota School of Medicine, Minneapolis, USA
| | - Gregory Beilman
- Surgery, University of Minnesota School of Medicine, Minneapolis, USA
| | | | - Kyle M Hocking
- Surgery and Biomedical Engineering, Vanderbilt University Medical Center, Nashville, USA
| | - Bret D Alvis
- Anesthesiology and Biomedical Engineering, Vanderbilt University Medical Center, Nashville, USA
| | - Eric S Wise
- Surgery, University of Minnesota School of Medicine, Minneapolis, USA
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Baratto C, Faini A, Gallone GP, Dewachter C, Perego GB, Bondue A, Muraru D, Senni M, Badano LP, Parati G, Vachiéry JL, Caravita S. Pulmonary artery wedge pressure and left ventricular end-diastolic pressure during exercise in patients with dyspnoea. ERJ Open Res 2023; 9:00750-2022. [PMID: 37670852 PMCID: PMC10475984 DOI: 10.1183/23120541.00750-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 01/29/2023] [Indexed: 03/18/2023] Open
Abstract
Background Pulmonary artery wedge pressure (PAWP) during exercise, as a surrogate for left ventricular (LV) end-diastolic pressure (EDP), is used to diagnose heart failure with preserved ejection fraction (HFpEF). However, LVEDP is the gold standard to assess LV filling, end-diastolic PAWP (PAWPED) is supposed to coincide with LVEDP and mean PAWP throughout the cardiac cycle (PAWPM) better reflects the haemodynamic load imposed on the pulmonary circulation. The objective of the present study was to determine precision and accuracy of PAWP estimates for LVEDP during exercise, as well as the rate of agreement between these measures. Methods 46 individuals underwent simultaneous right and left heart catheterisation, at rest and during exercise, to confirm/exclude HFpEF. We evaluated: linear regression between LVEDP and PAWP, Bland-Altman graphs, and the rate of concordance of dichotomised LVEDP and PAWP ≥ or < diagnostic thresholds for HFpEF. Results At peak exercise, PAWPM and LVEDP, as well as PAWPED and LVEDP, were fairly correlated (R2>0.69, p<0.01), with minimal bias (+2 and 0 mmHg respectively) but large limits of agreement (±11 mmHg). 89% of individuals had concordant PAWP and LVEDP ≥ or <25 mmHg (Cohen's κ=0.64). Individuals with either LVEDP or PAWPM ≥25 mmHg showed a PAWPM increase relative to cardiac output (CO) changes (PAWPM/CO slope) >2 mmHg·L-1·min-1. Conclusions During exercise, PAWP is accurate but not precise for the estimation of LVEDP. Despite a good rate of concordance, these two measures might occasionally disagree.
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Affiliation(s)
- Claudia Baratto
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
| | - Andrea Faini
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
| | - Gianluca P. Gallone
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
| | - Céline Dewachter
- Department of Cardiology, Cliniques Universitaires de Bruxelles, Hôpital Académique Erasme, Brussels, Belgium
| | - Giovanni B. Perego
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
| | - Antoine Bondue
- Department of Cardiology, Cliniques Universitaires de Bruxelles, Hôpital Académique Erasme, Brussels, Belgium
| | - Denisa Muraru
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Michele Senni
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
- Cardiovascular Department, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Luigi P. Badano
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Gianfranco Parati
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Jean-Luc Vachiéry
- Department of Cardiology, Cliniques Universitaires de Bruxelles, Hôpital Académique Erasme, Brussels, Belgium
| | - Sergio Caravita
- Department of Cardiology, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milan, Italy
- Department of Management, Information and Production Engineering, University of Bergamo, Dalmine, Italy
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Lee MH, Menezes TCF, Reisz JA, Ferreira EVM, Graham BB, Oliveira RKF. Exercise metabolomics in pulmonary arterial hypertension: Where pulmonary vascular metabolism meets exercise physiology. Front Physiol 2022; 13:963881. [PMID: 36171971 PMCID: PMC9510894 DOI: 10.3389/fphys.2022.963881] [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: 06/08/2022] [Accepted: 08/23/2022] [Indexed: 01/29/2023] Open
Abstract
Pulmonary arterial hypertension is an incurable disease marked by dysregulated metabolism, both at the cellular level in the pulmonary vasculature, and at the whole-body level characterized by impaired exercise oxygen consumption. Though both altered pulmonary vascular metabolism and abnormal exercise physiology are key markers of disease severity and pulmonary arterial remodeling, their precise interactions are relatively unknown. Herein we review normal pulmonary vascular physiology and the current understanding of pulmonary vascular cell metabolism and cardiopulmonary response to exercise in Pulmonary arterial hypertension. We additionally introduce a newly developed international collaborative effort aimed at quantifying exercise-induced changes in pulmonary vascular metabolism, which will inform about underlying pathophysiology and clinical management. We support our investigative approach by presenting preliminary data and discuss potential future applications of our research platform.
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Affiliation(s)
- Michael H. Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Thaís C. F. Menezes
- Division of Respiratory Diseases, Department of Medicine, Federal University of SP, São Paulo, Brazil
| | - Julie A. Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Eloara V. M. Ferreira
- Division of Respiratory Diseases, Department of Medicine, Federal University of SP, São Paulo, Brazil
| | - Brian B. Graham
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Rudolf K. F. Oliveira
- Division of Respiratory Diseases, Department of Medicine, Federal University of SP, São Paulo, Brazil,*Correspondence: Rudolf K. F. Oliveira,
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Boxhammer E, Mirna M, Bäz L, Alushi B, Franz M, Kretzschmar D, Hoppe UC, Lauten A, Lichtenauer M. Comparison of PCWP and LVEDP Measurements in Patients with Severe Aortic Stenosis Undergoing TAVI-Same Same but Different? J Clin Med 2022; 11:jcm11112978. [PMID: 35683367 PMCID: PMC9181042 DOI: 10.3390/jcm11112978] [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: 05/01/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Pulmonary capillary wedge pressure (PCWP) and left ventricular end-diastolic pressure (LVEDP) are often used as equivalents for determination of pulmonary hypertension (PH). PH is a comorbidity in patients with severe aortic valve stenosis (AS) and associated with limited prognosis. The aim of the study was to examine the role of differentiated classification basis of PCWP and LVEDP in patients planning for transcatheter aortic valve implantation (TAVI). METHODS 284 patients with severe AS completed a combined left (LHC) and right heart catheterization (RHC) as part of a TAVI planning procedure. Patients were categorized twice into subtypes of PH according to 2015 European Society of Cardiology (ESC) guidelines-on the one hand with PCWP and on the other hand with LVEDP as classification basis. PCWP-LVEDP relationships were figured out using Kaplan-Meier curves, linear regressions and Bland-Altman analysis. RESULTS Regarding 1-year mortality, Kaplan-Meier analyses showed similar curves in spite of different classification bases of PH subtypes according to PCWP or LVEDP with exception of pre-capillary PH subtype. PCWP-LVEDP association in the overall cohort was barely present (R = 0.210, R2 = 0.044). When focusing analysis on PH patients only a slightly increased linear regression was noted compared to the overall cohort (R = 0.220, R2 = 0.048). The strongest regression was observed in patients with creatinine ≥ 132 µmol/L (R = 0.357, R2 = 0.127) and in patients with mitral regurgitation ≥ II° (R = 0.326, R2 = 0.106). CONCLUSIONS In patients with severe AS, there is a weak association between hemodynamic parameters measured by LHC and RHC. RHC measurements alone are not suitable for risk stratification with respect to one-year mortality. If analysis of hemodynamic parameters is necessary in patients with severe AS scheduled for TAVI, measurement results of LHC and RHC should be combined and LVEDP could serve as a helpful indicator for risk assessment.
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Affiliation(s)
- Elke Boxhammer
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (M.M.); (U.C.H.)
| | - Moritz Mirna
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (M.M.); (U.C.H.)
| | - Laura Bäz
- Universitäts-Herzzentrum Thüringen, Clinic of Internal Medicine I, Department of Cardiology, Friedrich Schiller University, 07743 Jena, Germany; (L.B.); (M.F.); (D.K.)
| | - Brunilda Alushi
- Department of General and Interventional Cardiology and Rhythmology, Helios Hospital Erfurt, 99089 Erfurt, Germany; (B.A.); (A.L.)
| | - Marcus Franz
- Universitäts-Herzzentrum Thüringen, Clinic of Internal Medicine I, Department of Cardiology, Friedrich Schiller University, 07743 Jena, Germany; (L.B.); (M.F.); (D.K.)
| | - Daniel Kretzschmar
- Universitäts-Herzzentrum Thüringen, Clinic of Internal Medicine I, Department of Cardiology, Friedrich Schiller University, 07743 Jena, Germany; (L.B.); (M.F.); (D.K.)
| | - Uta C. Hoppe
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (M.M.); (U.C.H.)
| | - Alexander Lauten
- Department of General and Interventional Cardiology and Rhythmology, Helios Hospital Erfurt, 99089 Erfurt, Germany; (B.A.); (A.L.)
- Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK), Standort Berlin, 10785 Berlin, Germany
| | - Michael Lichtenauer
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (M.M.); (U.C.H.)
- Correspondence:
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Jenei C, Kádár R, Balogh L, Borbély A, Győry F, Péter A, Daragó A, Csanádi Z. Role of 3D echocardiography-determined atrial volumes in distinguishing between pre-capillary and post-capillary pulmonary hypertension. ESC Heart Fail 2021; 8:3975-3983. [PMID: 34184427 PMCID: PMC8497217 DOI: 10.1002/ehf2.13496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 05/03/2021] [Accepted: 06/16/2021] [Indexed: 11/10/2022] Open
Abstract
Aims The current guidelines on pulmonary hypertension (PH) recommend the use of invasive examination for differentiating between left‐sided heart disease‐related (post‐capillary) and pre‐capillary PH. However, atrial sizes are considered markers of ventricular filling pressures. Therefore, we aimed to test the clinical applicability of atrial volumes measured by transthoracic three‐dimensional echocardiography (3DE) in differentiating between pre‐capillary and post‐capillary PH. Methods and results Seventy‐five consecutive patients with PH were prospectively examined with transthoracic 3DE. After less than 24 h, the patients underwent right heart catheterization and 3DE and were classified as pre‐capillary or post‐capillary PH according to the recommendations of the ESC guidelines. The atrial volumes were measured offline with dedicated commercial software. Thirty‐eight patients (13 men, age 65 ± 18 year) had pre‐capillary PH, and 37 (23 men, age 62 ± year) had post‐capillary PH. The mean pulmonary artery pressures were similar in patients with pre‐capillary and post‐capillary PH (38 [IQR 26, 54] mmHg vs. 41 [IQR 33, 48] mmHg, respectively, P = 0.49). The left atrial indexed maximum (LAVi max) and minimum (LAVi min) volumes were significantly larger in the post‐capillary PH patient group than in the pre‐capillary PH patient group (LAVi max: 64 ± 32 mL/m2 vs. 41 ± 25 mL/m2, P = 0.001; LAVi min: 50 ± 22 mL/m2 vs. 26 ± 24 mL/m2, P < 0.0001). The indexed right atrial minimum volume (RAVi min) was also higher in patients with post‐capillary PH (51 ± 27 mL/m2 vs. 38 ± 26 mL/m2; P = 0.02). Both the left atrial (LA) and right atrial (RA) volumes, especially the LA minimum volume, correlated with the pulmonary artery wedge pressure (PAWP) (r = 0.62 (P < 0.0001) for LAV min vs. r = 0.49 (P < 0.0001) for LAV max; r = 0.32 (P = 0.005) for RAV min vs. r = 0.24 (P = 0.04) for RAV max). Multivariate logistic regression analysis showed that LAVi min was an independent predictor of post‐capillary PH. In the receiver operating characteristic (ROC) curves of parameters predicting the post‐capillary PH, the areas under the curve (AUC) for LAVi min, LAVi max, and RAVi min were 0.86 (95% CI, 0.76–0.95), 0.78 (95% CI, 0.67–0.89), and 0.66 (0.53–0.78), respectively. Concerning the performance of the atrial volume ratio for differentiating post‐capillary PH, the AUC of the atrial volume ratio was significantly lower [AUC: 0.66 (95% CI, 0.53–0.78)]. The ROC analysis indicated a possible cutoff value of 27.7 mL/m2 for LAVi min to predict post‐capillary PH (AUC = 0.86; sensitivity = 86%, specificity = 76%). Conclusions The BSA‐indexed left atrial minimum volume measured by transthoracic 3DE is a useful parameter for differentiating pre‐capillary from post‐capillary pulmonary hypertension.
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Affiliation(s)
- Csaba Jenei
- Department of Cardiology and Cardiac Surgery, University of Debrecen, Debrecen, Hungary
| | - Rebeka Kádár
- Department of Radiology (Medical Imaging Clinic), University of Debrecen, Debrecen, Hungary
| | - László Balogh
- Department of Cardiology and Cardiac Surgery, University of Debrecen, Debrecen, Hungary
| | - Attila Borbély
- Department of Cardiology and Cardiac Surgery, University of Debrecen, Debrecen, Hungary
| | - Ferenc Győry
- Department of Cardiology and Cardiac Surgery, University of Debrecen, Debrecen, Hungary
| | - Andrea Péter
- Department of Cardiology and Cardiac Surgery, University of Debrecen, Debrecen, Hungary
| | - Andrea Daragó
- Department of Cardiology and Cardiac Surgery, University of Debrecen, Debrecen, Hungary
| | - Zoltán Csanádi
- Department of Cardiology and Cardiac Surgery, University of Debrecen, Debrecen, Hungary
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Abstract
PURPOSE OF REVIEW Pulmonary hypertension (PH) occurs frequently in heart failure (HF) and confers worse prognosis. It becomes important to adequately identify these patients to optimize treatment. The purpose of this review is to inform about the updated classification of PH in left heart disease, in addition to current and upcoming trials regarding treatment. RECENT FINDINGS The updated classification of PH due to left heart disease now utilizes pulmonary vascular resistance instead of diastolic pulmonary gradient to differentiate between isolated postcapillary and combined pre and postcapillary PH. In regards to treatment, recent clinical trials continue to provide data that pulmonary vasodilators do not improve outcomes in this population. SUMMARY Management of underlying heart disease and optimal control of comorbidities continues to be the mainstay of treatment in PH due to HF. At this time, current data does not support the use of PH-directed therapies.
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Affiliation(s)
- Antonio Duran
- Department of Cardiology, John Ochsner Heart and Vascular Institute, New Orleans, Louisiana
- AdventHealth, Orlando, Florida, USA
| | - Stacy Mandras
- AdventHealth, Orlando, Florida, USA
- Ochsner Clinical School, University of Queensland, St Lucia, Australia
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Legg Ditterline BE, Wade S, Ugiliweneza B, Singam NS, Harkema SJ, Stoddard MF, Hirsch GA. Beneficial Cardiac Structural and Functional Adaptations After Lumbosacral Spinal Cord Epidural Stimulation and Task-Specific Interventions: A Pilot Study. Front Neurosci 2020; 14:554018. [PMID: 33192245 PMCID: PMC7643015 DOI: 10.3389/fnins.2020.554018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 09/15/2020] [Indexed: 12/22/2022] Open
Abstract
Cardiac myocyte atrophy and the resulting decreases to the left ventricular mass and dimensions are well documented in spinal cord injury. Therapeutic interventions that increase preload can increase the chamber size and improve the diastolic filling ratios; however, there are no data describing cardiac adaptation to chronic afterload increases. Research from our center has demonstrated that spinal cord epidural stimulation (scES) can normalize arterial blood pressure, so we decided to investigate the effects of scES on cardiac function using echocardiography. Four individuals with chronic, motor-complete cervical spinal cord injury were implanted with a stimulator over the lumbosacral enlargement. We assessed the cardiac structure and function at the following time points: (a) prior to implantation; (b) after scES targeted to increase systolic blood pressure; (c) after the addition of scES targeted to facilitate voluntary (i.e., with intent) movement of the trunk and lower extremities; and (d) after the addition of scES targeted to facilitate independent, overground standing. We found significant improvements to the cardiac structure (left ventricular mass = 10 ± 2 g, p < 0.001; internal dimension during diastole = 0.1 ± 0.04 cm, p < 0.05; internal dimension during systole = 0.06 ± 0.03 cm, p < 0.05; interventricular septum dimension = 0.04 ± 0.02 cm, p < 0.05), systolic function (ejection fraction = 1 ± 0.4%, p < 0.05; velocity time integral = 2 ± 0.4 cm, p < 0.001; stroke volume = 4.4 ± 1.5 ml, p < 0.01), and diastolic function (mitral valve deceleration time = -32 ± 11 ms, p < 0.05; mitral valve deceleration slope = 50 ± 25 cm s-1, p < 0.05; isovolumic relaxation time = -6 ± 1.9 ms, p < 0.05) with each subsequent scES intervention. Despite the pilot nature of this study, statistically significant improvements to the cardiac structure, systolic function, and diastolic function demonstrate that scES combined with task-specific interventions led to beneficial cardiac remodeling, which can reverse atrophic changes that result from spinal cord injury. Long-term improvements to cardiac function have implications for increased quality of life and improved cardiovascular health in individuals with spinal cord injury, decreasing the risk of cardiovascular morbidity and mortality.
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Affiliation(s)
- Bonnie E. Legg Ditterline
- Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, United States
- Department of NeuroSurgery, University of Louisville, Louisville, KY, United States
| | - Shelley Wade
- Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, United States
| | - Beatrice Ugiliweneza
- Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, United States
- Department of NeuroSurgery, University of Louisville, Louisville, KY, United States
| | - Narayana Sarma Singam
- Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Susan J. Harkema
- Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, United States
- Department of NeuroSurgery, University of Louisville, Louisville, KY, United States
| | - Marcus F. Stoddard
- Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Glenn A. Hirsch
- Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
- Division of Cardiology, Department of Medicine, National Jewish Health, Denver, CO, United States
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Ewert R, Heine A, Müller-Heinrich A, Bollmann T, Obst A, Desole S, Knaak C, Stubbe B, Opitz CF, Habedank D. Exercise and fluid challenge during right heart catheterisation for evaluation of dyspnoea. Pulm Circ 2020; 10:10.1177_2045894020917887. [PMID: 32577217 PMCID: PMC7290273 DOI: 10.1177/2045894020917887] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 03/14/2020] [Indexed: 12/23/2022] Open
Abstract
This prospective study compared exercise test and intravenous fluid challenge in a single right heart catheter procedure to detect latent diastolic heart failure in patients with echocardiographic heart failure with preserved ejection function. We included 49 patients (73% female) with heart failure with preserved ejection function and pulmonary artery wedge pressure ≤15 mmHg. A subgroup of 26 patients had precapillary pulmonary hypertension. Invasive haemodynamic and gas exchange parameters were measured at rest, 45° upright position, during exercise, after complete haemodynamic and respiratory recovery in lying position, and after rapid infusion of 500 mL isotonic solution. Most haemodynamic parameters increased at both exercise and intravenous fluid challenge, with the higher increase at exercise. Pulmonary vascular resistance decreased by –0.21 wood units at exercise and –0.56 wood units at intravenous fluid challenge (p = 0.3); 20% (10 of 49) of patients had an increase in pulmonary artery wedge pressure above the upper limit of 20 mmHg at exercise, and 20% above the respective limit of 18 mmHg after intravenous fluid challenge. However, only three patients exceeded the upper limit of pulmonary artery wedge pressure in both tests, i.e. seven patients only at exercise and seven other patients only after intravenous fluid challenge. In the subgroup of pulmonary hypertension patients, only two patients exceeded pulmonary artery wedge pressure limits in both tests, further five patients at exercise and four patients after intravenous fluid challenge. A sequential protocol in the same patient showed a significantly higher increase in haemodynamic parameters at exercise compared to intravenous fluid challenge. Both methods can unmask diastolic dysfunction at right heart catheter procedure, but in different patient groups.
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Affiliation(s)
- Ralf Ewert
- Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
| | - Alexander Heine
- Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
| | | | - Tom Bollmann
- Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
| | - Anne Obst
- Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
| | - Susanna Desole
- Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
| | - Christine Knaak
- Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
| | - Beate Stubbe
- Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
| | | | - Dirk Habedank
- DRK Kliniken Berlin, Department Cardiology, Berlin, Germany
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Zhang J, Brindise MC, Rothenberger S, Schnell S, Markl M, Saloner D, Rayz VL, Vlachos PP. 4D Flow MRI Pressure Estimation Using Velocity Measurement-Error-Based Weighted Least-Squares. IEEE TRANSACTIONS ON MEDICAL IMAGING 2020; 39:1668-1680. [PMID: 31751234 DOI: 10.1109/tmi.2019.2954697] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
This work introduces a 4D flow magnetic resonance imaging (MRI) pressure reconstruction method which employs weighted least-squares (WLS) for pressure integration. Pressure gradients are calculated from the velocity fields, and velocity errors are estimated from the velocity divergence for incompressible flow. Pressure gradient errors are estimated by propagating the velocity errors through Navier-Stokes momentum equation. A weight matrix is generated based on the pressure gradient errors, then employed for pressure reconstruction. The pressure reconstruction method was demonstrated and analyzed using synthetic velocity fields as well as Poiseuille flow measured using in vitro 4D flow MRI. Performance of the proposed WLS method was compared to the method of solving the pressure Poisson equation which has been the primary method used in the previous studies. Error analysis indicated that the proposed method is more robust to velocity measurement errors. Improvement on pressure results was found to be more significant for the cases with spatially-varying velocity error level, with reductions in error ranging from 50% to over 200%. Finally, the method was applied to flow in patient-specific cerebral aneurysms. Validation was performed with in vitro flow data collected using Particle Tracking Velocimetry (PTV) and in vivo flow measurement obtained using 4D flow MRI. Pressure calculated by WLS, as opposed to the Poisson equation, was more consistent with the flow structures and showed better agreement between the in vivo and in vitro data. These results suggest the utility of WLS method to obtain reliable pressure field from clinical flow measurement data.
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Hemnes AR, Opotowsky AR, Assad TR, Xu M, Doss LN, Farber-Eger E, Wells QS, Brittain EL. Features Associated With Discordance Between Pulmonary Arterial Wedge Pressure and Left Ventricular End Diastolic Pressure in Clinical Practice: Implications for Pulmonary Hypertension Classification. Chest 2018; 154:1099-1107. [PMID: 30148982 DOI: 10.1016/j.chest.2018.08.1033] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/16/2018] [Accepted: 08/01/2018] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND The measurements used to define pulmonary hypertension (PH) etiology, pulmonary arterial wedge pressure (PAWP), and left ventricular end-diastolic pressure (LVEDP) vary in clinical practice. We aimed to identify clinical features associated with measurement discrepancy between PAWP and LVEDP in patients with PH. METHODS We extracted clinical data and invasive hemodynamics from consecutive patients undergoing concurrent right and left heart catheterization at Vanderbilt University between 1998 and 2014. The primary outcome was discordance between PAWP and LVEDP in patients with PH in a logistic regression model. RESULTS We identified 2,270 study subjects (median age, 63 years; 53% men). The mean difference between PAWP and LVEDP was -1.6 mm Hg (interquartile range, -15 to 12 mm Hg). The two measurements were moderately correlated by linear regression (R = 0.6, P < .001). Results were similar when restricted to patients with PH. Among patients with PH (n = 1,331), older age (OR, 1.77; 95% CI, 1.23-2.45) was associated with PAWP underestimation in multivariate models, whereas atrial fibrillation (OR, 1.75; 95% CI, 1.08-2.84), a history of rheumatic valve disease (OR, 2.2; 95% CI, 1.36-3.52), and larger left atrial diameter (OR, 1.70; 95% CI, 1.24-2.32) were associated with PAWP overestimation of LVEDP. Results were similar in sensitivity analyses. CONCLUSIONS Clinically meaningful disagreement between PAWP and LVEDP is common. Atrial fibrillation, rheumatic valve disease, and larger left atrial diameter are associated with misclassification of PH etiology when relying on PAWP alone. These findings are important because of the fundamental differences in the treatment of precapillary and postcapillary PH.
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Affiliation(s)
- Anna R Hemnes
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Alexander R Opotowsky
- Department of Medicine, Brigham and Women's Hospital, Boston, MA and Department of Cardiology, Boston Children's Hospital, Boston, MA
| | - Tufik R Assad
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Meng Xu
- Department of Biostatistics, Vanderbilt University, Nashville, TN
| | | | - Eric Farber-Eger
- Division of Cardiovascular Medicine and Vanderbilt Translational and Clinical Cardiovascular Research Center, Vanderbilt University Medical Center, Nashville, TN
| | - Quinn S Wells
- Division of Cardiovascular Medicine and Vanderbilt Translational and Clinical Cardiovascular Research Center, Vanderbilt University Medical Center, Nashville, TN
| | - Evan L Brittain
- Division of Cardiovascular Medicine and Vanderbilt Translational and Clinical Cardiovascular Research Center, Vanderbilt University Medical Center, Nashville, TN.
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Pulmonary Arterial Hypertension Specific Therapy in Patients with Combined Post- and Precapillary Pulmonary Hypertension. Pulm Med 2018; 2018:7056360. [PMID: 29686899 PMCID: PMC5852885 DOI: 10.1155/2018/7056360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/07/2017] [Accepted: 12/26/2017] [Indexed: 11/18/2022] Open
Abstract
Background Specific therapy for patients with PAH is associated with good outcomes. Little is known about the effect of this treatment in patients with Cpc-PH (PAPm ≥ 25 mmHg, PAWP > 15 mmHg, DPG ≥ 7 mmHg, and/or PVR > 3 WU). This study evaluates the outcome of treating patients with Cpc-PH using PAH specific therapy. Methods The primary outcome was survival. Secondary outcomes were WHO functional class and 6-minute walk distance (6-MWD). Results Twenty-six patients with Cpc-PH (half with VHD and half with HF) received PAHST. Six patients did not tolerate treatment due to pulmonary edema. No predictors for treatment intolerance were identified. In twenty patients who tolerated the treatment, the mean WHO functional class improved from 2.70 ± 0.21 at initial assessment to 2.22 ± 0.21 (p < 0.04) and 2.06 ± 0.21 (p < 0.03) at 6 and 9 months, respectively. Mean 6-MWD improved from 276.0 ± 38.50 meters at initial assessment to 343.9 ± 22.99 meters (p < 0.04) and 364.6 ± 34.85 meters (p = 0.07) at 6 and 9 months, respectively. Twelve patients died during the follow-up period. Mean survival for all patients was 1279.7 ± 193.60 days. Conclusion PAHST may be beneficial in the treatment of Cpc-PH (both short and long term). Prospective randomized controlled trials of PAHST in this population are needed to assess its potential efficacy.
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Biomarkers to Assess Right Heart Pressures in Recipients of a Heart Transplant: A Proof-of-Concept Study. Transplant Direct 2018; 4:e346. [PMID: 29796417 PMCID: PMC5959348 DOI: 10.1097/txd.0000000000000783] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 01/31/2018] [Indexed: 11/26/2022] Open
Abstract
Background This proof-of-concept study investigated the feasibility of using biomarkers to monitor right heart pressures (RHP) in heart transplanted (HTx) patients. Methods In 298 patients, we measured 7.6 years post-HTx mean pressures in the right atrium (mRAP) and pulmonary artery (mPAP) and capillaries (mPCWP) along with plasma high-sensitivity troponin T (hsTnT), a marker of cardiomyocyte injury, and the multidimensional urinary classifiers HF1 and HF2, mainly consisting of dysregulated collagen fragments. Results In multivariable models, mRAP and mPAP increased with hsTnT (per 1-SD, +0.91 and +1.26 mm Hg; P < 0.0001) and with HF2 (+0.42 and +0.62 mm Hg; P ≤ 0.035), but not with HF1. mPCWP increased with hsTnT (+1.16 mm Hg; P < 0.0001), but not with HF1 or HF2. The adjusted odds ratios for having elevated RHP (mRAP, mPAP or mPCWP ≥10, ≥24, ≥17 mm Hg, respectively) were 1.99 for hsTnT and 1.56 for HF2 (P ≤ 0.005). In detecting elevated RHPs, areas under the curve were similar for hsTnT and HF2 (0.63 vs 0.65; P = 0.66). Adding hsTnT continuous or per threshold or HF2 continuous to a basic model including all covariables did not increase diagnostic accuracy (P ≥ 0.11), whereas adding HF2 per optimized threshold increased both the integrated discrimination (+1.92%; P = 0.023) and net reclassification (+30.3%; P = 0.010) improvement. Conclusions Correlating RHPs with noninvasive biomarkers in HTx patients is feasible. However, further refinement and validation of such biomarkers is required before their clinical application can be considered.
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Mascherbauer J, Zotter-Tufaro C, Duca F, Binder C, Koschutnik M, Kammerlander AA, Aschauer S, Bonderman D. Wedge Pressure Rather Than Left Ventricular End-Diastolic Pressure Predicts Outcome in Heart Failure With Preserved Ejection Fraction. JACC-HEART FAILURE 2017; 5:795-801. [PMID: 29032138 DOI: 10.1016/j.jchf.2017.08.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 07/27/2017] [Accepted: 08/03/2017] [Indexed: 02/01/2023]
Abstract
OBJECTIVES This study sought to compare the prognostic power of left ventricular end-diastolic pressure (LVEDP) and pulmonary arterial wedge pressure (PAWP) in heart failure with preserved ejection fraction (HFpEF). BACKGROUND It is broadly accepted that direct measurement of LVEDP in HFpEF more robustly reflects left ventricular hemodynamics than PAWP. METHODS A total of 173 consecutive HFpEF patients were prospectively enrolled. Of these, 152 patients fulfilled registry inclusion criteria. Study participants underwent clinical evaluation, lung function tests, echocardiography, cardiac magnetic resonance, coronary angiography, and invasive hemodynamic assessments with PAWP and LVEDP measurements in 1 procedure. The study endpoint was defined as hospitalization for heart failure or cardiac death. RESULTS A modest pressure difference (2.0 ± 4.4 mm Hg) was observed between PAWP (21.5 ± 5.6 mm Hg) and LVEDP (19.5 ± 5.2 mm Hg) at baseline. After a mean follow-up of 23.5 ± 21.3 months, PAWP was predictive of outcome (p = 0.010), whereas LVEDP was not (p = 0.261) by Kaplan-Meier curves. By multivariate regression analysis, diffusion capacity of carbon monoxide (DLCO) was the only parameter that was independently related to the pressure difference between PAWP and LVEDP. When patients were stratified according to DLCO between ≤45% and >45%, those in the low DLCO group were found to have a more pronounced pressure drop between PAWP and LVEDP (3.1 ± 4.8 mm Hg vs. 0.8 ± 3.8 mm Hg, respectively; p = 0.031) and to be in more advanced disease stages. CONCLUSIONS Our data indicate that PAWP but not LVEDP is associated with outcome in HFpEF. A more pronounced difference between PAWP and LVEDP and more advanced disease is found in patients with low DLCO.
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Affiliation(s)
| | | | - Franz Duca
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Christina Binder
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | | | | | - Stefan Aschauer
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Diana Bonderman
- Department of Cardiology, Medical University of Vienna, Vienna, Austria.
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Dickinson MG, Lam CS, Rienstra M, Vonck TE, Hummel YM, Voors AA, Hoendermis ES. Atrial fibrillation modifies the association between pulmonary artery wedge pressure and left ventricular end-diastolic pressure. Eur J Heart Fail 2017; 19:1483-1490. [PMID: 28948687 DOI: 10.1002/ejhf.959] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 07/17/2017] [Accepted: 07/19/2017] [Indexed: 01/22/2023] Open
Abstract
AIMS During right heart catheterization, pulmonary artery wedge pressure (PAWP) is often assumed to reflect left ventricular filling pressure. We sought to determine the impact of atrial fibrillation (AF) on the relationship between PAWP and left ventricular filling pressure, as measured by left ventricular end-diastolic pressure (LVEDP). METHODS AND RESULTS We performed simultaneous left and right heart catheterization in 123 patients (mean age 69 years, 28% with AF) referred for suspicion of pulmonary hypertension (PH). The correlation between PAWP and LVEDP was moderate (R2 = 0.42). The relationship between PAWP and LVEDP was modified by heart rhythm (P for interaction <0.01). In sinus rhythm, PAWP underestimated LVEDP (Bland-Altman mean difference: -2.96 mmHg, limits of agreement 6.6 to -12.5; R2 = 0.54), whereas in AF, PAWP overestimated LVEDP (Bland-Altman mean difference: 4.76 mmHg; limits of agreement: 12.2 to -3.3; R2 = 0.58). These differences impacted the differentiation between pre- and post-capillary PH, dependent on the use of either PAWP or LVEDP. In AF, post-capillary PH based on PAWP would have been classified as pre-capillary PH in 35% of patients if based on LVEDP. The opposite is true for sinus rhythm where 31% of pre-capillary PH based on PAWP would have been classified as post-capillary PH if based on LVEDP. CONCLUSION The relationship between PAWP and LVEDP varies by heart rhythm, with PAWP being higher than LVEDP among AF patients and lower than LVEDP among patients in sinus rhythm. Rhythm status and influences on the PAWP-LVEDP relationship should be considered when distinguishing between pre-capillary and post-capillary PH.
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Affiliation(s)
- Michael G Dickinson
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Carolyn S Lam
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Cardiology, National Heart Centre Singapore and Duke-National University of Singapore, Singapore
| | - Michiel Rienstra
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Ton E Vonck
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Yoran M Hummel
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Adriaan A Voors
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Elke S Hoendermis
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Cameron DM, McLaughlin VV, Rubenfire M, Visovatti S, Bach DS. Usefulness of Echocardiography/Doppler to Reliably Predict Elevated Left Ventricular End-Diastolic Pressure in Patients With Pulmonary Hypertension. Am J Cardiol 2017; 119:790-794. [PMID: 28040189 DOI: 10.1016/j.amjcard.2016.11.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 11/03/2016] [Accepted: 11/03/2016] [Indexed: 11/15/2022]
Abstract
The ability of echocardiography (echo)/Doppler to predict elevated left ventricular (LV) end-diastolic pressure (EDP) specifically among patients with pulmonary hypertension is not well defined. This was a retrospective analysis of 161 patients referred to a specialized pulmonary hypertension clinic. A model based on an American Society of Echocardiography (ASE)/European Association of Echocardiography (EAE) joint statement was evaluated, and a new model was developed using univariate linear regression and multivariable logistic regression for potentially better prediction of elevated LVEDP. The study cohort had a median pulmonary arterial pressure was 34.0 mm Hg and pulmonary vascular resistance was 3.7 Wood units; 81 patients (51%) had LVEDP >15 mm Hg on invasive testing. Doppler E/A, E/e' (septal, lateral, and average), e'/a' (lateral and average), and left atrial volume and diameter all had significant correlation with LVEDP (p <0.05). The ASE/EAE model performed poorly (sensitivity 54% and specificity 66%) for detecting elevated LVEDP. Only echo/Doppler grade 3 diastolic dysfunction had an LVEDP significantly different from other grades (grade 0 to 2, median 15 mm Hg, interquartile range 13 to 22 mm Hg; grade 3, median 22 mm Hg, interquartile range 19 to 32 mm Hg; p <0.01). An experimental model was statistically significant in its prediction of elevated LVEDP (area under the receiver operating characteristic curve 0.7, p <0.001) but demonstrated poor performance (sensitivity 67% and specificity 61%). In conclusion, numerous echo/Doppler measurements correlate with elevated LV filling pressure. However, both the ASE/EAE model and our experimental model had poor test performance that did not permit confident identification of elevated LVEDP.
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Affiliation(s)
- David M Cameron
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan.
| | - Vallerie V McLaughlin
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Melvyn Rubenfire
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Scott Visovatti
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - David S Bach
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
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Naing P, Kuppusamy H, Scalia G, Hillis GS, Playford D. Non-Invasive Assessment of Pulmonary Vascular Resistance in Pulmonary Hypertension: Current Knowledge and Future Direction. Heart Lung Circ 2016; 26:323-330. [PMID: 27939746 DOI: 10.1016/j.hlc.2016.10.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 10/07/2016] [Accepted: 10/12/2016] [Indexed: 10/20/2022]
Abstract
Pulmonary Hypertension (PHT) is relatively common, dangerous and under-recognised. Pulmonary hypertension is not a diagnosis in itself; it is caused by a number of differing diseases each with different treatments and prognoses. Therefore, timely and accurate recognition of the underlying cause for PHT is essential for appropriate management. This is especially true for patients with Pulmonary Arterial Hypertension (PAH) in the current era of disease-specific drug therapy. Measurement of Pulmonary Vascular Resistance (PVR) helps separate pre-capillary from post-capillary PHT, and is measured with right heart catheterisation (RHC). Echocardiography has been used to derive a number of non-invasive surrogates for PVR, with varying accuracy. Ultimately, the goal of non-invasive assessment of PVR is to separate PHT due to left heart disease from PHT due to increased PVR, to help streamline investigation and subsequent treatment. In this review, we summarise the physiology and pathophysiology of pulmonary blood flow, the various causes of pulmonary hypertension, and non-invasive surrogates for PVR.
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Affiliation(s)
- Pyi Naing
- University of Notre Dame Australia, Fremantle, WA, Australia; Mount Hospital, Perth, WA, Australia.
| | - Harveen Kuppusamy
- University of Notre Dame Australia, Fremantle, WA, Australia; Mount Hospital, Perth, WA, Australia
| | | | | | - David Playford
- University of Notre Dame Australia, Fremantle, WA, Australia; Mount Hospital, Perth, WA, Australia
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19
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20
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Rosenkranz S, Gibbs JSR, Wachter R, De Marco T, Vonk-Noordegraaf A, Vachiéry JL. Left ventricular heart failure and pulmonary hypertension. Eur Heart J 2016; 37:942-54. [PMID: 26508169 PMCID: PMC4800173 DOI: 10.1093/eurheartj/ehv512] [Citation(s) in RCA: 437] [Impact Index Per Article: 54.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/20/2015] [Accepted: 09/07/2015] [Indexed: 12/18/2022] Open
Abstract
In patients with left ventricular heart failure (HF), the development of pulmonary hypertension (PH) and right ventricular (RV) dysfunction are frequent and have important impact on disease progression, morbidity, and mortality, and therefore warrant clinical attention. Pulmonary hypertension related to left heart disease (LHD) by far represents the most common form of PH, accounting for 65-80% of cases. The proper distinction between pulmonary arterial hypertension and PH-LHD may be challenging, yet it has direct therapeutic consequences. Despite recent advances in the pathophysiological understanding and clinical assessment, and adjustments in the haemodynamic definitions and classification of PH-LHD, the haemodynamic interrelations in combined post- and pre-capillary PH are complex, definitions and prognostic significance of haemodynamic variables characterizing the degree of pre-capillary PH in LHD remain suboptimal, and there are currently no evidence-based recommendations for the management of PH-LHD. Here, we highlight the prevalence and significance of PH and RV dysfunction in patients with both HF with reduced ejection fraction (HFrEF) and HF with preserved ejection fraction (HFpEF), and provide insights into the complex pathophysiology of cardiopulmonary interaction in LHD, which may lead to the evolution from a 'left ventricular phenotype' to a 'right ventricular phenotype' across the natural history of HF. Furthermore, we propose to better define the individual phenotype of PH by integrating the clinical context, non-invasive assessment, and invasive haemodynamic variables in a structured diagnostic work-up. Finally, we challenge current definitions and diagnostic short falls, and discuss gaps in evidence, therapeutic options and the necessity for future developments in this context.
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Affiliation(s)
- Stephan Rosenkranz
- Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln, Kerpener Str. 62, 50937 Köln, Germany Cologne Cardiovascular Research Center (CCRC), Universität zu Köln, Köln, Germany
| | - J Simon R Gibbs
- National Heart and Lung Institute (NHLI), Imperial College London, London, UK Department of Cardiology, National Pulmonary Hypertension Service, Hammersmith Hospital London, London, UK
| | - Rolf Wachter
- Klinik für Kardiologie und Pneumologie, Herzzentrum, Georg-August-Universität, Universitätsmedizin Göttingen, Göttingen, Germany German Cardiovascular Research Center (DZHK), Göttingen, Germany
| | - Teresa De Marco
- Division of Cardiology, University of California San Francisco (UCSF), San Francisco, CA, USA
| | | | - Jean-Luc Vachiéry
- Department of Cardiology, Hopital Erasme, Université Libre de Bruxelles, Brussels, Belgium
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Kotecha D, Piccini JP. Atrial fibrillation in heart failure: what should we do? Eur Heart J 2015; 36:3250-7. [PMID: 26419625 PMCID: PMC4670966 DOI: 10.1093/eurheartj/ehv513] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/25/2015] [Accepted: 09/07/2015] [Indexed: 01/06/2023] Open
Abstract
Heart failure (HF) and atrial fibrillation (AF) are two conditions that are likely to dominate the next 50 years of cardiovascular (CV) care. Both are increasingly prevalent and associated with high morbidity, mortality, and healthcare cost. They are closely inter-related with similar risk factors and shared pathophysiology. Patients with concomitant HF and AF suffer from even worse symptoms and poorer prognosis, yet evidence-based evaluation and management of this group of patients is lacking. In this review, we evaluate the common mechanisms for the development of AF in HF patients and vice versa, focusing on the evidence for potential treatment strategies. Recent data have suggested that these patients may respond differently than those with HF or AF alone. These results highlight the clear clinical need to identify and treat according to best evidence, in order to prevent adverse outcomes and reduce the huge burden that HF and AF are expected to have on global healthcare systems in the future. We propose an easy-to-use clinical mnemonic to aid the initial management of newly discovered concomitant HF and AF, the CAN-TREAT HFrEF + AF algorithm (Cardioversion if compromised; Anticoagulation unless contraindication; Normalize fluid balance; Target initial heart rate <110 b.p.m.; Renin-angiotensin-aldosterone modification; Early consideration of rhythm control; Advanced HF therapies; Treatment of other CV disease).
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Affiliation(s)
- Dipak Kotecha
- Institute of Cardiovascular Science, University of Birmingham, Birmingham, UK Monash Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, Australia
| | - Jonathan P Piccini
- Duke Center for Atrial Fibrillation, Clinical Cardiac Electrophysiology, Duke University Medical Center, Durham, USA
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Gavilanes F, Alves JL, Fernandes C, Prada LFL, Jardim CVP, Morinaga LTK, Dias BA, Hoette S, Souza R. Left ventricular dysfunction in patients with suspected pulmonary arterial hypertension. J Bras Pneumol 2015; 40:609-16. [PMID: 25610501 PMCID: PMC4301245 DOI: 10.1590/s1806-37132014000600004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 12/03/2014] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE: To evaluate the role of right heart catheterization in the diagnosis of pulmonary arterial hypertension (PAH). METHODS: We evaluated clinical, functional, and hemodynamic data from all patients who underwent right heart catheterization because of diagnostic suspicion of PAH-in the absence of severe left ventricular dysfunction (LVD), significant changes in pulmonary function tests, and ventilation/perfusion lung scintigraphy findings consistent with chronic pulmonary thromboembolism-between 2008 and 2013 at our facility. RESULTS: During the study period, 384 patients underwent diagnostic cardiac catheterization at our facility. Pulmonary hypertension (PH) was confirmed in 302 patients (78.6%). The mean age of those patients was 48.7 years. The patients without PH showed better hemodynamic profiles and lower levels of B-type natriuretic peptide. Nevertheless, 13.8% of the patients without PH were categorized as New York Heart Association functional class III or IV. Of the 218 patients who met the inclusion criteria, 40 (18.3%) and 178 (81.7%) were diagnosed with PH associated with LVD (PH-LVD) and with PAH, respectively. The patients in the HP-LVD group were significantly older than were those in the PAH group (p < 0.0001). CONCLUSIONS: The proportional difference between the PAH and PH-LVD groups was quite significant, considering the absence of echocardiographic signs suggestive of severe LVD during the pre-catheterization investigation. Our results highlight the fundamental role of cardiac catheterization in the diagnosis of PAH, especially in older patients, in whom the prevalence of LVD that has gone undiagnosed by non-invasive tests is particularly relevant.
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Affiliation(s)
- Francisca Gavilanes
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - José Leonidas Alves
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - Caio Fernandes
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - Luis Felipe Lopes Prada
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - Carlos Viana Poyares Jardim
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - Luciana Tamie Kato Morinaga
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - Bruno Arantes Dias
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - Susana Hoette
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
| | - Rogerio Souza
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, Brazil. Pulmonary Hypertension Group, Department of Pulmonology, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - InCor/HCFMUSP, Heart Institute/University of São Paulo School of Medicine Hospital das Clínicas - São Paulo, Brazil
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23
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LeVarge BL, Pomerantsev E, Channick RN. Reliance on end-expiratory wedge pressure leads to misclassification of pulmonary hypertension. Eur Respir J 2014; 44:425-34. [PMID: 24925918 PMCID: PMC4259251 DOI: 10.1183/09031936.00209313] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Current guidelines recommend measurement of pulmonary artery wedge pressure (PAWP) at end-expiration. However, this recommendation is not universally followed and may not be physiologically appropriate. We investigated the performance of end-expiratory PAWP in the evaluation of precapillary pulmonary hypertension patients. 329 spontaneously breathing patients undergoing right heart catheterisation were retrospectively classified as having a precapillary, post-capillary or mixed phenotype based on standardised clinical criteria. Tracings were reviewed to compare end-expiratory PAWP with PAWP averaged throughout the respiratory cycle; these values were correlated with the clinical classifications. Predictors of large respirophasic variation in PAWP were determined. Elevated end-expiratory PAWP (>15 mmHg) occurred in 29% of subjects with precapillary phenotype. There were no differences in demographics or clinical history between those with elevated and normal end-expiratory PAWP. Those with elevated end-expiratory PAWP had greater right atrial pressure and respirophasic PAWP variation. Among all subjects, the magnitude of respirophasic variation in PAWP was positively correlated with body mass index and respirophasic variation in left ventricular end-diastolic pressure. A significant proportion of precapillary pulmonary hypertension patients have end-expiratory PAWP >15 mmHg. Spontaneous positive end-expiratory intrathoracic pressure may contribute; in those cases, PAWP averaged throughout respiration may be a more accurate measurement.
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Affiliation(s)
- Barbara L LeVarge
- Dept of Pulmonary and Critical Care Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | | | - Richard N Channick
- Dept of Pulmonary and Critical Care Medicine, Massachusetts General Hospital, Boston, MA, USA
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24
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Valois FM, Nery LE, Ramos RP, Ferreira EVM, Silva CC, Neder JA, Ota-Arakaki JS. Contrasting cardiopulmonary responses to incremental exercise in patients with schistosomiasis-associated and idiopathic pulmonary arterial hypertension with similar resting hemodynamic impairment. PLoS One 2014; 9:e87699. [PMID: 24498356 PMCID: PMC3912057 DOI: 10.1371/journal.pone.0087699] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 12/27/2013] [Indexed: 11/18/2022] Open
Abstract
It has been reported that schistosomiasis-associated PAH (Sch-PAH) has a more benign clinical course compared with idiopathic PAH (IPAH). We therefore hypothesized that Sch-PAH subjects would present with less impaired cardiopulmonary and metabolic responses to exercise than IPAH patients, even with similar resting pulmonary hemodynamic abnormalities. The aim of this study was to contrast physiologic responses to incremental exercise on cycle ergometer between subjects with Sch-PAH and IPAH. We performed incremental cardiopulmonary exercise tests (CPET) in subjects newly diagnosed with IPAH (n = 9) and Sch-PAH (n = 8), within 1 month of the hemodynamic study and before the initiation of specific therapy for PAH. There were no significant between-group differences in cardiac index, pulmonary vascular resistance or mean pulmonary artery pressure. However, mean peak oxygen uptake (VO2) was greater in Sch-PAH than IPAH patients (75.5±21.4 vs 54.1±16.1% predicted, p = 0.016), as well as the ratio of increase in VO2 to work rate (8.2±1.0 vs 6.8±1.8 mL/min/W, p = 0.03). Additionally, the slope of the ventilatory response as a function of CO2 output was lower in Sch-PAH (40.3±3.9 vs 55.6±19.8; p = 0.04), and the heart rate response for a given change in VO2 was also diminished in Sch-PAH compared to IPAH (80.1±20.6 vs 123.0±39.2 beats/L/min; p = 0.02). In conclusion, Sch-PAH patients had less impaired physiological responses to exercise than IPAH subjects with similar resting hemodynamic dysfunction. Our data suggest a more preserved cardiopulmonary response to exercise in Sch-PAH which might be related to its better clinical course compared to IPAH.
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Affiliation(s)
- Fabricio Martins Valois
- Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
- * E-mail:
| | - Luiz Eduardo Nery
- Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - Roberta Pulcheri Ramos
- Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | | | - Celia Camelo Silva
- Division of Cardiology, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - Jose Alberto Neder
- Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
- Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen’s University, Kingston, Canada
| | - Jaquelina Sonoe Ota-Arakaki
- Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
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