Shah, Surendra PrasadSah, Ram PratapPanthi, SagarShah, Rakesh KumarAcharya, RochanaNeupane, DurgaPuri, ReechaPoudel, SulakshaBasnet, Lila Bahadur2025-11-112025-11-112022https://hdl.handle.net/20.500.14572/3116Surendra Prasad Shah Department of Internal Medicine, Nobel Medical College Teaching Hospital, Biratnagar, Morang, Nepal Ram Pratap Sah Department of Internal Medicine, Nobel Medical College Teaching Hospital, Biratnagar, Morang, Nepal Sagar Panthi B. P. Koirala Institute of Health Sciences, Dharan, Sunsari, Nepal Rakesh Kumar Shah Department of Internal Medicine, Nobel Medical College Teaching Hospital, Biratnagar, Morang, Nepal Rochana Acharya B. P. Koirala Institute of Health Sciences, Dharan, Sunsari, Nepal Durga Neupane B. P. Koirala Institute of Health Sciences, Dharan, Sunsari, Nepal Reecha Puri Manmohan Memorial Institute of Health Sciences, Maharajgunj, Kathmandu, Nepal Sulaksha Poudel Curative Service Division, Department of Health Services, Teku, Kathmandu, Nepal Lila Bahadur Basnet Curative Service Division, Department of Health Services, Teku, Kathmandu, NepalAbstract Introduction: Atrial fibrillation is one of the commonest arrhythmias with an overall prevalence estimated to be 0.4-1% in the general population. The objective of this study was to find out the prevalence of atrial fibrillation among patients admitted to the Department of Internal Medicine in a tertiary care centre. Methods: A descriptive cross-sectional study was conducted among patients admitted to the Department of Internal Medicine of a tertiary care centre from 01 March 2021 to 01 March 2022. Ethical approval was obtained from the Institutional Review Committee (Reference number: IRC-478/2021). Convenience sampling method was used. Data were collected from the hospital records using a semi-structured study proforma including demography, clinical presentation, laboratory investigations, electrocardiogram, 2-dimension echocardiography, and CHA2DS2VASc score. Point estimate and 95% Confidence Interval were calculated. Results: Among 27,980 patients, atrial fibrillation was found in 185 (0.66%) (0.58-0.77, 95% Confidence Interval). Among them 66 (35.67%) were in the age group of 61-70 years and 97 (52.43%) were females. Dyspnea was present in 149 (80.54%), palpitation in 137 (74.05%) and pedal edema in 117 (63.27%). Valvular atrial fibrillation was seen in 101 (54.59%) and non-valvular atrial fibrillation was seen in 84 (45.41%) patients. Conclusions: The prevalence of atrial fibrillation was found to be similar when compared to other studies conducted in similar settings.en-USAtrial fibrillationHeart valve diseaseHypertensionRheumatic heart diseaseArticle