Spectrum of Cardiac Arrhythmias During Initial 48 Hours of Acute Myocardial Infarction Patients and their Association with in-Hospital Outcome

Objective: To determine the spectrum of arrhythmias during initial 48 hours AMI and their impact on in-hospital outcome.
 Study Design: Analytical Cross-sectional study.
 Place Duration Study: This study was conducted at a Tertiary Cardiac Center Rawalpindi Pakistan from Jun 2021 till Jan 2022.
 Methodology: A total (n=150) patients Acute Myocardial Infarction (AMI) undergoing immediate or early revascularization meeting inclusion exclusion criteria were included in study. They monitored for hospitalization outcomes noted predesigned Performa.Chi square test applied arrhythmia association with adverse outcome 95% confidence interval 5% margin error.
 Results: comprised (n=117; 78%) males (n=33; 22%) females. Mean age 62.9 years. ST elevation MI(STEMI) constituted (n=127; 84.7%) Non-ST Elevation MI (NSTEMI) (n=23;15.3%) patients. Arrhythmias documented overall (n=122;81.3%) patients, 81.8% (n=104) STEMI (n=18; 77.2%) NSTEMI. Sinus tachycardia(n=52;34.7%) most common rhythm followed by accelerated idioventricular (n=20;13.4%) sinus bradycardia12.7% (n=19). In-hospital mortality (n=25;16.7%) p-value=0.009, mostly ventricular tachycardia/ventricular fibrillation, atrial fibrillationand complete heart block. Other (n=23;14.7%) acute left failure, (n=9; 6%) cardiogenic shock (n=5;3.3%) stent thrombosis, (n=2; 1.3%) cerebrovascular accident (CVA)and (n=31; 20.7%) prolonged (p-value 0.05).
 Conclusion: are myocardial infarction presentation tachycardia being bradycardia. associated increased outcome.