Prognostic Significance of Left Atrial Volume Index in Acute Myocardial Infarction and its Angiographic Correlation

ABSTRACT

Evaluating left atrium volume is a good way to estimate prognosis in acute myocardial infarction patients because it indicates to time and severity of diastolic dysfunction and longer-term results of acute myocardial infarction. Left atrial (LA) volume is a prognostic predictor across a wide spectrum of cardiac and non-cardiac diseases. Aim: To assess the left atrial volume index in Myocardial Infarction & Angiographic correlation and to assess any correlation between with left atrial volume index and outcomes of MI such as heart failure, short term mortality, arrhythmias, and ejection fraction. Methods: 100 patients with ST elevation in ECG, with history, examination, ECG changes and elevated CK-MB, Anterior, Inferior, Right ventricle & Posterior wall Myocardial infarction were included. The patients were studied considering demographic factors, risk factors, echocardiography indexes such as systolic and diastolic functions and left atrium volume and angiography. Results: Among LAVI >34, 22 had (70-90%) of RCA, 7 had (70-90%) of LCX, 29 had (70-90%) of LAD. Among LAVI>34, 14 patients had TVD, 5 had DVD, 29 had SVD, 9 normal coronaries, which are not statistically significant. Among LAVI >34, 22 patients undergone PCI, 7 patients underwent CABG, 1 patient had CHB, 3 patient had VT and 9 patients had AF, which is statistically significant. Among LAVI>34, 24 patients had HF at 30 days follow-up. Among LAVI>34, in 30 days follow up 1 patient expired. When compared with LAVI <34 it was not statistically significant. Conclusion: LA Volume index provides prognostic information incremental to clinical data and standard Echocardiographic predictors of outcome, including LV systolic function and Doppler assessment of Diastolic Function.