0009: Contribution of right ventricular echocardiographic parameters in evaluation of the prognosis of dilated cardiomyopathy

Abstract

Introduction The evaluation of the prognosis of patients with dilated cardiomyopathy (DCM) is an essential step in their care but the study ultrasound of the right ventricle (RV) is not a part of the practice of the cardiologist. Purpose Determine which of the RV echocardiographic parameters those predicting the occurrence of secondary cardiac events (death, hospitalization for decompensated heart failure and ventricular arrhythmias poorly tolerated) in patients with DCM. Materials and methods Prospective study in 61 patients with DCM. All patients received a conventional echocardiographic examination with emphasis on studying the RV parameters: fractional shortening surface (FRSRV), the systolic excursion of the tricuspid annulus inTM (TAPS) and systolic pulmonary artery pressure (SPAP), completed by a tissue pulsed Doppler study at the tricuspid annulus (Sa, Ea and Aa). We studied the correlation between echocardiographic parameters of RV and the occurrence of secondary cardiac events. Results The average age of patients was 62±9 years with a sex-ratio of 2/1. Forty-eight percent of patients were in NYHA class III. The average fractional ejection of left ventricle was 29±7,2%. DCM was ischemic in 59% of cases. During follow-up (11±5 months), 5 patients died, 22 were hospitalized for decompensated heart failure and 2 patients had a ventricular tachycardia. We have shown that the parameters predictors of mortality are: TAPS 42mmHg, RV FRS 42mmHg, a TAPS