Right Ventricular-pulmonary Artery Coupling in Patients Undergoing Cardiac Resynchronization Therapy

Overview

Journal Int J Cardiovasc Imaging

Publisher Springer

Specialty Radiology

Date 2024 Sep 5

PMID 39235726

Authors

Alessandra Roccabruna

Federico Fortuni

Alberto Comuzzi

Ilaria Armani

Bruna Bolzan

Elena Franchi

Anna Piccoli

Giovanni Benfari

Giovanni Morani

Luca Tomasi

Flavio Luciano Ribichini

Giacomo Mugnai

Affiliations

Soon will be listed here.

Abstract

Introduction: The ratio between tricuspid annular plane systolic excursion (TAPSE) and estimated pulmonary artery systolic pressure (PASP) has been shown to be a reliable, non-invasive surrogate of the right ventricular-pulmonary artery (RV-PA) coupling. The present study analysed the association between TAPSE/PASP and response to cardiac resynchronization therapy (CRT) and the prognostic role of RV-PA in patients undergoing CRT implantation. The primary endpoints were: the association between baseline TAPSE/PASP and CRT response/cardiovascular and all-cause death.

Methods And Results: All patients having undergone CRT implantation in our Center from 2016 to 2020 were included in our retrospective analysis. The RV-PA coupling was assessed by echocardiography at baseline and 1 year follow up in CRT recipients. The cut-off value of TAPSE/PASP resulted from ROC curve analysis (i.e.<0.33 mm/mmHg). A total of 229 patients (age 69.9 ± 10.1 years; 77.7% men) were included. During a mean follow-up of 44.2 ± 17.9 months, 40 (17.5%) patients died. The baseline value of TAPSE/PASP was not significantly associated with CRT response. Patients with a more impaired TAPSE/PASP ratio had significantly worse survival rates. On multivariate Cox regression, only TAPSE/PASP ratio and estimated glomerular filtration rate were independently associated with all-cause death. Finally, the TAPSE/PASP ratio significantly increased after CRT implantation in the group of "responders" whereas it did not change in 'non-responders'.

Conclusions: The baseline value of TAPSE/PASP ratio was not associated with CRT response. However, the TAPSE/PASP ratio was a strong predictor of both all-cause and cardiovascular death in CRT recipients.

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