Hafiz Mughees Ather.
Left ventricular ejection fraction after acute myocardial infarction.
Professional Med J Jan ;15(2):234-9.

To measure and compare Left Ventricular Ejection Fraction (LVEF) after acute anterior wall and inferior wall myocardial Infarction and correlate LVEF with clinical findings in the patients. (2) To see prevalence of Left Ventricular Failure (LVF) after AMI. Design: Prospective observational echocardiography based study. Setting: Sheikh Zayed Hospital Lahore. Period: From 2001 to 2002. A total of 60 (sixty) patients of (anterior or inferior) Acute Myocardial infarction (AMI) were included in the study. Patients were divided in two groups on the basis of anterior myocardial wall MI (AWMI) or inferior myocardial wall MI (IWMI). Echocardiography was done on all cases and ejection fraction was calculated by applying Simpson`s Rule and patients were examined at the same time to see the presence of signs of left ventricular failure (LVF). (LVEF) was correlated with the findings of LVF in these patients. Results: In patients with LVF mean ejection fraction (EF) was 37.13 with standard deviation (SD) of 8.4 %. In patients without failure the mean EF was 56.29% with SD of 3.75. In 30 patients of IWMI, mean EF was 54.93% with SD of 6.86. In 30 patients of AWMI it was 46.07% with SD of 11.72. In all 60 patients minimum EF was 30% and maximum was 60% with a mean of 50.50 with SD of 10.52. In AWMI, 53% patients had signs of left ventricular failure. In patients of IWMI, 13.3% had signs of LVF. Conclusions: AWMI causes more decrease in LVEF. LVF is more commonly associated with AWMI than IWMI. There is statistically significant difference in LVEF of patients with and without LVF.

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