Frequency of Left Main Coronary Artery Stenosis with ST-Segment Elevation in Lead aVR in Patients of Acute Coronary Syndrome

Abstract

Objective: To determine the frequency of STEL-aVR with left main coronary artery (LMCA) stenosis among patients with Acute Coronary Syndrome (ACS).

Study Design: A cross-sectional study

Place and Duration of Study: This study was conducted at the Department of Cardiology, Ch. Pervaiz Elahi Institute of Cardiology Multan from May 2020 to May 2021.

Materials and Methods: Patients from both genders within the age bracket of 35-75 years, diagnosed with Acute Coronary syndrome and having AT elevation≥ 0.5mm on aVR lead were included in the study. All the participants were then under coronary angiography to diagnose left main coronary artery (LCMA) stenosis. SPSS (version 18) was used for statistical analysis.

Results: A total of 220 patients were enrolled. Out of them, 188 (85.4%) were positive for the LCMA stenosis. Moreover, 140 (63.6%) were male that indicated male dominance. The majority 170 (77.2%) were aged above 55 years. However, no significant association was found between age and gender and LMCA stenosis. STEMI was the most frequent disorder (47.7%), so the maximum positivity rate of stenosis was found in patients with STEMI.

Conclusion: ST-elevation-aVR is an effective tool for the diagnosis of left main coronary artery stenosis in patients suffering from the acute coronary syndrome.