A Study on Atrial Fibrillation and Its Correlation With Left Atrial Size

Abstract

Introduction-Atrial brillation is characterized by disorganized, rapid and irregular atrial activation with loss of atrial contraction and an irregular ventricular rate determined by atrio-ventricular nodal conduction. Atrial brillation is the most common sustained arrhythmia and major public health problems. The present study aimed to nd out possible underlying etiologies for atrial brillation. Method- In this study, total of 100 patients of age >18 years with patients with clinically and electrocardiographically proven atrial brillation were included. However, patients of age <18 years with Arrhythmia other than atrial brillation were excluded. The etiology of atrial brillation is evaluated using electrocardiogram and transthoracic echocardiogram, and correlation with the ndings of parasternal long-axis view of left atrial size. Results- The majority of patients were between the ages of 49 and 55, with a mean age of 50.74 ±15.3. Additionally, the male/female ratio in the overall enrolled cases was 23:27, indicating female dominance. The mean body mass index and initials of the patients were gathered. The mean size of the left atrium was 5.00±1.10. Majority of the patients fell in 5-6 cm left atrial size with rheumatic heart disease diagnosis followed by 4-5 cm left atrial size with dilated cardiomyopathy diagnosis. Conclusion- Most patients had rheumatic heart disease, as opposed to dilated cardiomyopathy or ischaemic heart disease. The systemic hypertension, age, electrolytes imbalance and obesity are the major leading cause to causes the arrhythmic changes. Statistically, a signicant difference association of diagnosis with left atrial size were observed.