Background: Congestive cardiac failure (CCF) is often a worldwide phenomenon and usually affects millions of people years and is accompanied with high mortality. The present study is undertaken to evaluate the usefulness of Lung Ultrasound Scan in diagnosis and to identify its role as a marker of clinical outcome in patients with Acute LVF.Methods: A prospective analytical study was undertaken among the patients diagnosed as acute left ventricular failure who were admitted in tertiary care hospital. About 45 patients were enrolled by convenient sampling. The severity of acute LVF will be assessed using Clinical Congestion Score (CCS) and Lung Ultrasound Scan (LUS) based degree of congestion within 6 hours of admission, day 01 of admission and 24 hours before discharge.Results: The mean clinical congestion score was 5.36 at the time of admission. The Kerley B line at the time of admission was 15.93. The mean Kerley B line was 20.41 in the patients with clinical congestion score of more than 3.The mean Kerley B score after 24 hours of discharge was 19.69 and 5.69 during discharge among the patients with severe LV dysfunction. The mean Kerley B line score was higher at the time of admission which was statistically significant at the time of admission and within 24 hours after admission in patients with readmission.Conclusions: The mean clinical congestion scores and Kerley B lines were higher during the admission which rapidly decreased before discharge. There was a positive correlation between the Clinical congestion scores and Kerley B lines.