• Mehmet Cosgun, Isa Sincer, Mehmet Inanir, Emrah Erdal, Asli Kurtar Mansiroglu, and Yilmaz Gunes.
• Department of Cardiology, Bolu Abant Izzet Baysal University Hospital, Bolu, Turkey.
• J Coll Physicians Surg Pak. 2021 May 1; 31 (5): 567570567-570.

ObjectiveTo assess P-wave duration and dispersion (PD) in morbidly obese young subjects who do not have co-associated atrial fibrillation (AF) risk factors, such as hypertension, diabetes, atrial enlargement and diastolic dysfunction.Study DesignAn observational cross-sectional study.Place And Duration Of StudyBolu Abant Izzet Baysal University Medical Faculty, Turkey; and the study was conducted between October 2017 and June 2018.MethodologyP-wave duration and dispersions were determined on 12-lead surface ECG in 47 morbidly obese and 44 healthy weight subjects, aged between 21-40 years. Above mentioned risk factors were studied. The correlation between BMI, PD and Pmax were investigated by Pearson correlation analysis.  Results: Average body mass index (BMI) of obese and control groups were 42.3 (8.5) vs. 19.5 (1.5) (P <0.001). Maximum P-wave duration [(Pmax), 105.3±9.8 vs. 95.6±8.5, p<0.001] and PD [27.6 (7.6) vs. 12.2(8.3), p<0.001] were statistically significantly prolonged in obese patients when compared to the normal weight group. BMI correlation with Pmax and PD (r=0.485; p<0.001 and r=0.620; p<0.001, respectively) were significant.Conclusion  Pmax and PD, which are potential electrocardiographic AF predictors, may increase in lone obese patients having no comorbidities. Key Words:  Electrocardiography, Arrhythmia, P-wave duration, P-wave dispersion, Severe obesity.

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