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Related Experiment Video

Updated: Feb 13, 2026

Studying Left Ventricular Reverse Remodeling by Aortic Debanding in Rodents
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Right heart function interacts with left ventricular remodeling after CRT: A pressure volume loop study.

Alexander Schmeisser1, Thomas Rauwolf1, Ali Ghanem1

  • 1Department of Internal Medicine, Division of Cardiology and Angiology, Magdeburg University, Magdeburg, Germany.

International Journal of Cardiology
|March 18, 2018
PubMed
Summary
This summary is machine-generated.

Good right ventricular-pulmonary artery coupling predicts left ventricular reverse remodeling in heart failure patients receiving cardiac resynchronization therapy (CRT). This RV-PA ratio is a key indicator for CRT patient selection and prognosis.

Keywords:
CRT responseHemodynamicsLV reverse remodelingPressure-volume loopsRight ventricular functionRight ventricular-pulmonary vascular coupling

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Area of Science:

  • Cardiology
  • Heart Failure Research
  • Medical Device Technology

Background:

  • Right ventricular (RV) dysfunction is a critical prognostic factor in systolic heart failure.
  • The relationship between RV function, RV-pulmonary artery (PA) coupling, and left ventricular (LV) reverse remodeling post-cardiac resynchronization therapy (CRT) is not fully understood.
  • This study investigated the predictive role of baseline RV function and RV-PA coupling in LV reverse remodeling following CRT.

Purpose of the Study:

  • To assess the predictive value of baseline RV function and RV-pulmonary artery (PA) coupling on left ventricular (LV) reverse remodeling after cardiac resynchronization therapy (CRT).
  • To determine if RV-PA coupling can predict CRT response and patient prognosis.

Main Methods:

  • A prospective study enrolled 110 patients indicated for CRT.
  • Baseline RV function and RV-PA interaction were evaluated using echocardiography and invasive pressure-volume loop catheterization.
  • The primary endpoint was LV reverse remodeling, defined as a ≥15% reduction in LV end-systolic volume at 6 months.

Main Results:

  • Patients with better baseline RV-pulmonary artery (PA) coupling (higher Ees/Ea ratios) showed greater left ventricular (LV) reverse remodeling post-cardiac resynchronization therapy (CRT).
  • The baseline Ees/Ea ratio was an independent predictor of LV response to CRT.
  • Normal RV-PA coupling (Ees/Ea ≥ 1) was associated with an 86% responder rate, while progressive uncoupling correlated with lower response rates and adverse outcomes.

Conclusions:

  • Enhanced baseline right ventricular-pulmonary artery (RV-PA) coupling, indicating less LV-induced pulmonary hypertension and secondary RV dysfunction, predicts improved left ventricular (LV) reverse remodeling after cardiac resynchronization therapy (CRT).
  • RV-PA coupling is an independent predictor of prognosis in CRT patients.
  • The RV-PA ratio may serve as a valuable tool for guiding CRT patient selection.