“…In ES patients, higher functional class, a history of arrhythmias, patient age, right ventricular dysfunction, syncope, elevated uric acid levels and the presence of Down's syndrome have been found to be of value in predicting a poor outcome [26,[30][31][32][33][34]. In a very recent study based on data of 181 ES patients, a composite echocardiographic score was also highly predictive of clinical outcome [35].…”