Backgrounds and Purpose: The prognostic value of the echocardiographic evaluation of right ventricular(RV) function in patients with dilated cardiomyopathy(DCMP) is still a matter of investigation. The aim of the study is to investigate the usefulness of RV scoring for detecting the adverse event in patients with DCMP. Methods: We reviewed retrospectively the medical records and echocardiographic findings of 69 patients(M:F=44:25, mean age=67짹11years) with DCMP(left ventricular ejection fraction(LVEF) <35%). To asses the RV function, we use the scoring system according to the echocardiographic parameters(RV score index=sum of scores/number of parameters measures). The patients with cardiac adverse event especially with cardiac death were compared with the patients without cardiac death. Results: Mean follow-up duration was 45짹19months. The cardiac death was occurred in 23 patients(33.3%). There were significant differences in RVEF(43.1짹15.7 vs 29.5짹17.9%, p<0.01), angle between interventricular septum(IVS) and RV (31.9짹9.0 vs 44.0짹14.5쨘, p<0.01), and results of RV functional score index(0.35짹0.15 vs 0.65짹0.22, p<0.01) between the patients without cardiac death and with cardiac death. The RV sore index more than 1.2 was the independent predictor for cardiac death in patients with DCMP(Figure). Conclusion: The assessment of RV function using RV scoring system according to the echocardiographic parameters was useful for predicting the cardiac mortality in patients with DCMP.