OUTCOMES OF PCI IN PATIENTS WITH PREVIOUS CORONARY ARTERY BYPASS GRAFTING (CABG) IN PAKISTAN

Main Article Content

Dr Syed Muzammil Shah
Dr Honey Raj Vishno
Dr Tariq Shah
Dr Muhammad Abdul Wahab
Dr Rafi Ullah
Dr Rukhana

Keywords

Coronary artery disease, Percutaneous coronary intervention, Coronary artery bypass grafting, Procedural success, Major adverse cardiac events, Post-procedural complications

Abstract

Background: Coronary artery disease (CAD) is a prevalent condition requiring significant medical intervention. Coronary artery bypass grafting (CABG) is a common treatment for severe CAD; however, grafts can develop stenosis or occlusion over time, necessitating further interventions such as percutaneous coronary intervention (PCI). This study aims to evaluate the outcomes of PCI in patients with previous CABG in Pakistan, focusing on procedural success rates, in-hospital mortality, major adverse cardiac events (MACE), and post-procedural complications.
Methods: This prospective observational study was conducted at Hayatabad Medical Complex, Peshawar, from January 2020 to December 2022. The study included 303 patients, aged 40-89 years, who had significant graft stenosis or occlusion post-CABG and underwent PCI. Baseline and follow-up data were collected through structured interviews and medical record reviews. Primary outcomes measured were procedural success rates, in-hospital mortality, and MACE. Secondary outcomes included post-procedural complications and 30-day readmission rates. Statistical analyses were performed using SPSS version 26.0, with paired t-tests and multivariate logistic regression applied to identify predictors of complications.
Results: The mean age of participants was 65.3 years, with 71% males. Significant graft stenosis was observed in 68% of patients, with the left internal mammary artery (LIMA) and saphenous vein grafts (SVG) most commonly affected. The procedural success rate was 92%, with in-hospital mortality at 3.3%. MACE occurred in 15.5% of patients, including recurrent myocardial infarction (4%) and emergency CABG (1.7%). Post-procedural complications were noted in 25% of patients, including bleeding (8%), vascular complications (5%), and contrast-induced nephropathy (12%). The 30-day readmission rate was 18%.
Conclusion: PCI is a viable option for patients with previous CABG, demonstrating high procedural success and acceptable rates of complications. These findings support the integration of PCI into clinical practice for managing graft stenosis post-CABG in Pakistan. Future research should focus on long-term outcomes and further refinement of patient selection criteria to optimize treatment strategies.
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