Registry of cardiac conduction disorders in acute ST elevation myocardial infarction patients who underwent primary percutaneous coronary intervention during their in-hospital stay

Background Conduction disturbances, including bradycardia, atrioventricular blocks, and bundle branch blocks, are common complications of acute myocardial infarction and reflect ischemic injury to the conduction system. Timely reperfusion with primary percutaneous coronary intervention has improved outcomes by restoring coronary blood flow and reducing complications and mortality. Aim Purpose of the study was to assess clinical outcomes of patients who underwent primary percutaneous coronary intervention for acute ST elevation myocardial infarction (STEMI) associated with conduction abnormalities during hospital stay. Patients and methods This study was conducted on 100 patients with Acute STEMI associated with new-onset conduction abnormalities. Full history taking and clinical examination, risk factors assessment, laboratory assessment (ECG), echocardiographic, and coronary angiographic evaluation were carried out during hospital stay. Major adverse cardiac events were recorded during the in-hospital period (average 2 days). Results Most patients were males (65%), with a mean age 58.56 years. Smoking was the leading risk factor (78%) with 86% were classified as Killip I. Average door-to-balloon time (1.5 h), multi-vessel disease observed in (43%), with the most common culprit vessel being the right coronary artery in 63%. Tirofiban used in 16% and 95% had final thrombolysis in myocardial infarction flow III. A major adverse cardiac events occurred in 39%: mortality (2%), heart failure (12%), reinfarction (5%), bleeding (7%), and contrast-induced nephropathy (6%), with no strokes reported. Conclusion High-degree atrioventricular block in STEMI is associated with adverse in-hospital outcomes. Early recognition, rapid revascularization improves conduction recovery and reduce morbidity, and mortality.