Association between right ventricular strain and outcomes in patients with dilated cardiomyopathy

• Published in: Heart (British Cardiac Society) Vol. 107; no. 15; pp. 1233 - 1239
• Main Authors: Liu, Tong, Gao, Yifeng, Wang, Hui, Zhou, Zhen, Wang, Rui, Chang, San-Shuai, Liu, Yuanyuan, Sun, Yuqing, Rui, Hongliang, Yang, Guang, Firmin, David, Dong, Jianzeng, Xu, Lei
• Format: Journal Article
• Language: English
• Published: England BMJ Publishing Group LTD 01.08.2021; BMJ Publishing Group
• Series: Original research
• Subjects: Blood; Cardiology; Cardiomyopathy; Cardiovascular disease; Coronary vessels; Empowerment; Heart attacks; Heart failure; Heart Failure and Cardiomyopathies; Heart transplants; Hospitals; Laboratories; Medical imaging; Medical prognosis; Software; Variables; Beijing China; United States > US; China; cardiac imaging and diagnostics; heart failure; myocardial disease; advanced cardiac imaging; cardiac magnetic resonance (CMR) imaging
• ISSN: 1355-6037; 1468-201X; 1468-201X
• DOI: 10.1136/heartjnl-2020-317949

ObjectiveTo explore the association between three-dimensional (3D) cardiac magnetic resonance (CMR) feature tracking (FT) right ventricular peak global longitudinal strain (RVpGLS) and major adverse cardiovascular events (MACEs) in patients with stage C or D heart failure (HF) with non-ischaemic dilated cardiomyopathy (NIDCM) but without atrial fibrillation (AF).MethodsPatients with dilated cardiomyopathy were enrolled in this prospective cohort study. Comprehensive clinical and biochemical analysis and CMR imaging were performed. All patients were followed up for MACEs.ResultsA total of 192 patients (age 53±14 years) were eligible for this study. A combination of cardiovascular death and cardiac transplantation occurred in 18 subjects during the median follow-up of 567 (311, 920) days. Brain natriuretic peptide, creatinine, left ventricular (LV) end-diastolic volume, LV end-systolic volume, right ventricular (RV) end-diastolic volume and RVpGLS from CMR were associated with the outcomes. The multivariate Cox regression model adjusting for traditional risk factors and CMR variables detected a significant association between RVpGLS and MACEs in patients with stage C or D HF with NIDCM without AF. Kaplan-Meier analysis based on RVpGLS cut-off value revealed that patients with RVpGLS <−8.5% showed more favourable clinical outcomes than those with RVpGLS ≥−8.5% (p=0.0037). Subanalysis found that this association remained unchanged.ConclusionsRVpGLS-derived from 3D CMR FT is associated with a significant prognostic impact in patients with NIDCM with stage C or D HF and without AF.