Survival of patients treated with Percutaneous Transluminal Coronary Angioplasty following ST segment elevation myocardial infarction

Abstract

INTRODUCTION AND OBJECTIVE: Objective was to determine the survival of patients treated with Percutaneous Transluminal Coronary Angioplasty (PTCA) following ST segment elevation myocardial infarction (STEMI) and factors affecting survival. METHOD: A retrospective study was conducted among patients diagnosed with STEMI and treated with PTCA in a private hospital in Colombo from 1st January 2009 to 1st November 2012. Details of patients were collected from the medical records and survival status, cause and date of death where relevant, were obtained from medical records, patients or next of kin. RESULTS: Data of 197 patients were obtained. Of them 153 (77.7%) were males. The mean age of males was 55.30 ± 9 30 years and of females 58.80 ±7.10 years. Twenty three pat (11.7%) had died due to all causes and 13 (6.6%) due to cardiovascular diseases. Of the sample 82.7 % (95% CI 77.9-90.5) survived for 3 years. Survival was associated with (unadjusted) history of smoking, diabetes, dyslipidemia, hF ABP positivity, not being on regular medication, occlusion site of LAD and regular follow up. Based on Cox proportional hazards model (adjusted), site of arterial occlusion (proximal vs distal segment of left anterior descending artery [HR 10.98; 95% CI 1.096- 110.205] was significantly associated with survival of patients after ontrolling for other risk factors. CONCLUSION: The three year survival of patients with STEMI who underwent PTCA was 83%. Patients with proxM LAD occlusion were 11 times more likely t< years of PTCA as compared to those who had a distal LAD occlusion.