İbişoğlu, ErsinBoyraz, BedrettinTurgut Güneş, SaimeSavur, ÜmeyirNaki Tekin, Deniz DilanErdoğan, AslanÖzdenkaya, YaşarErdoğan, EmrahÇeğilli, ErcanOlgun, Fatih ErkamGüneş, Hacı Murat2021-10-142021-10-142021İbişoğlu, E., Boyraz, B., Turgut Güneş, S., Savur, Ü., Naki Tekin, D. D., Erdoğan, A. ... Güneş, H. M. (2021). Impact of surgical weight loss on novel P-wave-related variables which are nominated as predictors of atrial arrhythmias. PACE - Pacing and Clinical Electrophysiology, 44(9), 1516-1522. https://dx.doi.org/10.1111/pace.143270147-83891540-8159https://dx.doi.org/10.1111/pace.14327https://hdl.handle.net/20.500.12511/8449Background Bariatric surgery has been associated with reduced cardiovascular mortality and morbidity in obese patients. In this study, we aimed to evaluate the alterations of novel P-wave related atrial arrhythmia predictors in patients who achieved effective weight loss with bariatric surgery. Methods The study included 58 patients who underwent bariatric surgery. We measured heart rate, PR, P wave (PW) max, PW min, Average P axis, P wave peak time (PWPT) in lead D2 and lead V1, terminal force in lead V1 (V1TF), and we estimated P wave dispersion (PWdis) interval both pre-operation and 6 months after operation. Results Heart rate, PR, PW max, PW min, PWdis, Average P axis, PWPTD2, PWPTV1 and V1TF values, which were close to the upper limit in the pre-op period, showed statistically significant decreases at 6 months after the operation. The most prominent changes were observed in PW dis (51.15 +/- 9.70 ms vs. 48.79 +/- 9.50 ms, p = .010), PWPTD2 (55.75 +/- 6.91 ms vs. 50.59 +/- 7.67 ms, p < .001), PWPTV1 (54.10 +/- 7.06 ms vs. 48.05 +/- 7.64 ms, p < .001) and V1TF (25 [43.1%] vs. 12 [20.7%], p < .001). Conclusions The results of our study indicated that bariatric surgery has positive effects on the regression of ECG parameters which are predictors of atrial arrhythmias, particularly atrial fibrillation (AF).eninfo:eu-repo/semantics/embargoedAccessAtrial ArrhythmiaElectrocardiogramObesityP WaveSurgeryArticle4491516152210.1111/pace.14327Q4Q2