Arrhythmias in Myocardial Infarct Patients in the First 24 Hours in a Tertiary Care Hospital, Bareilly (Code-T0334)

Introduction: Myocardial infarction (MI) is a leading cause of morbidity and mortality 
worldwide. Among its complications, arrhythmias significantly impact patient outcomes, often 
occurring within the first 24 hours of hospital admission. Early identification and management of 
arrhythmias can improve prognosis and reduce mortality. This study evaluates the prevalence, 
types, and prognostic significance of arrhythmias in MI patients admitted to a tertiary care 
hospital. 
Aims and Objectives 
Aim:  
To study the types of arrhythmias in patients in first 24 hours following myocardial infarction.  
Objectives: 
To study the effect of age, gender, lifestyle co-morbidities in development of arrhythmias after 
myocardial infarction.  
To study the various prognostic factors related to arrhythmias in outcomes of patients with 
myocardial infarction. 
Methods: A prospective observational study was conducted at Rajshree Medical Research 
Institute, Bareilly, enrolling 100 patients diagnosed with acute MI. Continuous ECG monitoring 
was performed to detect arrhythmias, which were categorized into supraventricular, ventricular, 
and conduction abnormalities. Clinical parameters, biochemical markers, and demographic data 
were analyzed using statistical methods, including chi-square tests and ANOVA. 
Results: Sinus rhythm (44%) was the most common finding, followed by sinus bradycardia (7%) 
and bundle branch blocks (7%). High-risk arrhythmias such as ventricular tachycardia (4%) and 
atrial fibrillation (4%) were associated with increased mortality. The overall mortality rate was 
3.0%, with the highest fatality observed in patients with left bundle branch block (20%). 
Conclusion: Arrhythmias are prevalent in MI patients, with certain types posing a higher risk of 
adverse outcomes. Continuous ECG monitoring during the first 24 hours is crucial for early 
detection and management. Implementing standardized arrhythmia protocols can enhance patient 
prognosis and reduce mortality. 
Keywords: Myocardial Infarction, Arrhythmia, Electrocardiogram, Prognostic Factors, Cardiac 
Monitoring, Tertiary Care Hospital.