Dr Muhammad Usman,Dr Afsheen Nigar,Dr Hafiz Ehtisham Ul Haq
Introduction: For the diagnosis of acute coronary syndrome, electrocardiography (ECG) is an easy, fast, and economic investigation. Its applicability in predicting left main coronary artery/3 vessel coronary disease can be very useful in saving precious time in coronary patients' critical treatment. Objective: Electrocardiography changes in patients with Non-ST segment elevation acute coronary syndrome as an indicator of left main coronary artery / 3 vessel coronary diseases. Methods: This cross-sectional study was conducted at Mumtaz Bakhtawar Hospital Lahore from May 2019 to April 2020, taking 112 consecutive patients > 20 years of age, either gender, with Non-ST segment elevation MI symptoms or with ECG changes in lead aVR. The immediate family members of the patients received informed written consent for the study. Approval was taken from hospital ethics judiciary committee. Analyzing data done through SPSS. Descriptive statistics were presented (mean ± standard deviation for continuous & frequencies, and percentages for categorical variables). Results: Median ±SD age for patients was 54.65 ±16.44 years. The ratio Male to Female was 3.4:1. About half of these patients suffered from Left Main (LM)/3 Vessel diseases. About another quarter had 2 vessels and others had single-vessel disease (P value < 0.0001). In lead aVR, patients with ST elevation were associated with increased risk of developing LM/3 vessel disease (P value < 0.0001). Conclusion: In lead II, III, and aVF, ST elevation in lead aVR and ST depression can be basically used for assessment of the NSTE-ACS patients left main/3 vessel disease.