Karl-Philipp Rommel1, Maximilian von Roeder1, Christian Oberueck1, Konrad Latuscynski1, Christian Besler1, Stephan Blazek1, Thomas Stiermaier1, Karl Fengler1, Volker Adams1, Marcus Sandri1, Axel Linke1, Gerhard Schuler1, Holger Thiele1, Philipp Lurz2. 1. From the Department of Internal Medicine/Cardiology, Heart Center, Leipzig University, Germany (K.-P.R., M.v.R., C.O., K.L., C.B., S.B., K.F., M.S., G.S., H.T., P.L.); Medical Clinic II (Cardiology, Angiology, Intensive Care Medicine), University Heart Center Luebeck, Germany (T.S.); and Heart Center Dresden, University Hospital at the Technical University Dresden, Germany (V.A., A.L.). 2. From the Department of Internal Medicine/Cardiology, Heart Center, Leipzig University, Germany (K.-P.R., M.v.R., C.O., K.L., C.B., S.B., K.F., M.S., G.S., H.T., P.L.); Medical Clinic II (Cardiology, Angiology, Intensive Care Medicine), University Heart Center Luebeck, Germany (T.S.); and Heart Center Dresden, University Hospital at the Technical University Dresden, Germany (V.A., A.L.). philipp.lurz@gmx.de.
Abstract
BACKGROUND: Although systolic right ventricular (RV) dysfunction has been shown to be a potent predictor for adverse outcomes in patients with heart failure with preserved ejection fraction (HFpEF), RV functional abnormalities in the course of the syndrome are not well characterized. We, therefore, sought to assess load-independent and load-dependent systolic and diastolic characteristics of RV function in stable outpatients with HFpEF. METHODS AND RESULTS: We invasively obtained RV and left ventricular pressure-volume loops in 24 HFpEF patients and 9 patients without heart failure symptoms with a conductance catheter during basal conditions and handgrip exercise. Transient preload reduction was used to extrapolate the RV end-systolic elastance and diastolic stiffness constant. HFpEF patients and controls showed similar left ventricular and RV dimensions and ejection fractions with elevated left ventricular filling pressures. In HFpEF patients, invasively determined load-independent RV contractility (P=0.04) and load-independent passive RV stiffness constant β (P<0.01) were elevated. Although RV relaxation and cardiac output were similar at baseline, HFpEF patients demonstrated a blunted increase in cardiac output under exercise (P=0.01) associated with prolonged RV relaxation (P=0.01), decrease in stroke volume (P<0.01), higher RV-filling pressures (P<0.01), and a marked increase in the end-diastolic pressure-volume relationship (P<0.01). CONCLUSIONS: In compensated stages of the HFpEF syndrome, systolic RV function is preserved, but diastolic abnormalities with intrinsic RV stiffness and prolonged RV relaxation are already present. Impaired diastolic RV reserve contributes to a blunted increase in cardiac output during exertion. Because impairments in diastolic function seem to be a biventricular phenomenon, RV diastolic dysfunction warrants further consideration when characterizing HFpEF patients. CLINICAL TRIAL REGISTRATION: https://www.clinicaltrials.gov. Unique identifier: NCT02459626.
BACKGROUND: Although systolic right ventricular (RV) dysfunction has been shown to be a potent predictor for adverse outcomes in patients with heart failure with preserved ejection fraction (HFpEF), RV functional abnormalities in the course of the syndrome are not well characterized. We, therefore, sought to assess load-independent and load-dependent systolic and diastolic characteristics of RV function in stable outpatients with HFpEF. METHODS AND RESULTS: We invasively obtained RV and left ventricular pressure-volume loops in 24 HFpEF patients and 9 patients without heart failure symptoms with a conductance catheter during basal conditions and handgrip exercise. Transient preload reduction was used to extrapolate the RV end-systolic elastance and diastolic stiffness constant. HFpEF patients and controls showed similar left ventricular and RV dimensions and ejection fractions with elevated left ventricular filling pressures. In HFpEF patients, invasively determined load-independent RV contractility (P=0.04) and load-independent passive RV stiffness constant β (P<0.01) were elevated. Although RV relaxation and cardiac output were similar at baseline, HFpEF patients demonstrated a blunted increase in cardiac output under exercise (P=0.01) associated with prolonged RV relaxation (P=0.01), decrease in stroke volume (P<0.01), higher RV-filling pressures (P<0.01), and a marked increase in the end-diastolic pressure-volume relationship (P<0.01). CONCLUSIONS: In compensated stages of the HFpEF syndrome, systolic RV function is preserved, but diastolic abnormalities with intrinsic RV stiffness and prolonged RV relaxation are already present. Impaired diastolic RV reserve contributes to a blunted increase in cardiac output during exertion. Because impairments in diastolic function seem to be a biventricular phenomenon, RV diastolic dysfunction warrants further consideration when characterizing HFpEF patients. CLINICAL TRIAL REGISTRATION: https://www.clinicaltrials.gov. Unique identifier: NCT02459626.
Authors: Chakradhari Inampudi; Daniel Silverman; Marc A Simon; Peter J Leary; Kavita Sharma; Brian A Houston; Jean-Luc Vachiéry; Francois Haddad; Ryan J Tedford Journal: Chest Date: 2021-08-12 Impact factor: 9.410
Authors: Michael I Brener; Amirali Masoumi; Vivian G Ng; Khodr Tello; Marcelo B Bastos; William K Cornwell; Steven Hsu; Ryan J Tedford; Philipp Lurz; Karl-Philipp Rommel; Karl-Patrik Kresoja; Sherif F Nagueh; Manreet K Kanwar; Navin K Kapur; Gurumurthy Hiremath; Mohammad Sarraf; Antoon J M Van Den Enden; Nicolas M Van Mieghem; Paul M Heerdt; Rebecca T Hahn; Susheel K Kodali; Gabriel T Sayer; Nir Uriel; Daniel Burkhoff Journal: Circ Heart Fail Date: 2021-12-29 Impact factor: 8.790
Authors: Maximilian von Roeder; Johannes Tammo Kowallick; Karl-Philipp Rommel; Stephan Blazek; Christian Besler; Karl Fengler; Joachim Lotz; Gerd Hasenfuß; Christian Lücke; Matthias Gutberlet; Holger Thiele; Andreas Schuster; Philipp Lurz Journal: Clin Res Cardiol Date: 2019-05-03 Impact factor: 5.460
Authors: Catherine G Ireland; Rachel L Damico; Todd M Kolb; Stephen C Mathai; Monica Mukherjee; Stefan L Zimmerman; Ami A Shah; Fredrick M Wigley; Brian A Houston; Paul M Hassoun; David A Kass; Ryan J Tedford; Steven Hsu Journal: J Heart Lung Transplant Date: 2021-02-17 Impact factor: 13.569