Three-dimensional echocardiography sphericity index (AUC 0.957) and systolic dyssynchrony index (AUC 0.777) accurately predicted left ventricular remodeling 6 months after acute myocardial infarction.
Observational (n=75)
Do three-dimensional echocardiography parameters (sphericity index and systolic dyssynchrony index) accurately predict early left ventricular remodeling after acute myocardial infarction compared to two-dimensional echocardiography?
Three-dimensional echocardiography parameters, specifically the sphericity index, provide high diagnostic accuracy for predicting early left ventricular remodeling after acute myocardial infarction.
Effect estimate: AUC 0.957
OBJECTIVE: Left ventricle (LV) geometry and dyssynchrony are associated with LV remodeling after acute myocardial infarction (AMI). The aim of this prospective study was to assess the diagnostic value of new three-dimensional echocardiography (3DE) parameters sphericity (SI) and systolic dyssynchrony indexes (SDI) for the prediction of LV remodeling after AMI and to compare them with two-dimensional echocardiography (2DE) parameters. METHODS: 2DE and 3DE were performed in 75 patients with AMI within 3 days from the onset of MI and 6 months later. LV remodeling was defined as a ≥15% increase in the LV end-diastolic volume (EDV) at follow-up. 3D SI was calculated by dividing EDV by the volume of a sphere whose diameter was derived from the major end-diastolic LV long axis. SDI was considered as a standard deviation of the time from cardiac cycle onset to minimum systolic volume in 16 LV segments. RESULTS: LV remodeling was identified in 34 (45%) patients using the 2DE method and in 22 (29%) patients using the 3DE method. Evaluated 3DE parameters, such as EDV area under the receiver operating characteristic (ROC) curve (AUC) 0.742, sensitivity 71%, specificity 79%, end-systolic volume (AUC 0.729, sensitivity 69%, specificity 78%), SDI (AUC 0.777, sensitivity 73%, specificity 77%), and SI, had significant prognostic value for LV remodeling. According to the AUC, the highest predictive value had 3D SI (AUC 0.957, sensitivity 90%, specificity 91%). CONCLUSION: 3DE parameters, especially 3D SI and SDI, play important roles in the prediction of LV remodeling after AMI and can be used in clinical practice.
Arnas Karužas (Tue,) conducted a observational in Acute myocardial infarction (n=75). Three-dimensional echocardiography (3DE) parameters (SI and SDI) vs. Two-dimensional echocardiography (2DE) parameters was evaluated on Left ventricular remodeling (≥15% increase in LV end-diastolic volume at follow-up) (AUC 0.957). Three-dimensional echocardiography sphericity index (AUC 0.957) and systolic dyssynchrony index (AUC 0.777) accurately predicted left ventricular remodeling 6 months after acute myocardial infarction.