Objective To analyze the value of cardiac ultrasound and magnetic resonance imaging(MRI)in prognosis evaluation of dilated cardiomyopathy.Methods A total of 110 patients with dilated cardiomyopathy admitted to the hospi-tal from January 2020 to January 2023 were selected.All of them underwent cardiac ultrasound and MRI examinations.They were followed up and the prognosis was recorded.Cox regression analysis was performed to analyze the relationship between cardiac ultrasound and MRI parameters and the prognosis of dilated cardiomyopathy.Receiver operating characteristic(ROC)curves were used to analyze the value of the two in prognosis evaluation of dilated cardiomyopathy.Results A-mong the 110 patients,42 patients had endpoint events(poor prognosis group)and the remaining 68 patients without(good prognosis group).Right ventricular diameter(RV),left ventricular end systolic diameter(LVSd),left atrial diameter(LA)and left ventricular end diastolic diameter(LVDd)of the poor prognosis group were larger than those of the good prognosis group(P＜0.05).Left ventricular end diastolic volume(LVEDV)and left ventricular end systolic volume(LVESV)of the poor prognosis group were larger than those of the good prognosis group.Stroke volume(SV)and left ven-tricular ejection fraction(LVEF)were lower than those of the good prognosis group(P＜0.05).Univariate COX analysis found that RV,LA,LVDd,LVEDV,LVESV,and SV were risk factors for poor prognosis in patients with dilated cardiomyop-athy(P＜0.05).Multivariate COX regression analysis found that LVDd,LVESV,and SV were risk factors for poor progno-sis in patients with dilated cardiomyopathy(P＜0.05).ROC curves indicated that the area under the curve(AUC)of LVESV was the highest,which was 0.750(95％CI:0.659-0.828).The AUC of combination of indicators was 0.772(95％CI:0.682-0.847),and the sensitivity was significantly higher.According to cutoff values obtained from ROC anal-ysis,patients with dilated cardiomyopathy were grouped.Overall survival(OS)time of the large LVDd group and the small LVDd group was(2.30±1.11)months and(2.48±1.17)months.OS time of the large LVESV group and the small LVESV group was(2.35±1.24)months and(2.54±1.05)months.OS time of the large SV group and the small SV group was(2.56±1.19)months and(2.37±1.13)months.Kaplan-Meier survival analysis showed significant differences in OS between groups(P＜0.05).Conclusion Both cardiac ultrasound and MRI can be used to evaluate the prognosis of patients with dilated cardiomyopathy.In clinical practice,indicators such as LVESV and LVDd detected by MRI can be used for evaluating the prognosis.
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