Impact of surgical weight loss on novel P-wave-related variables which are nominated as predictors of atrial arrhythmias

Ibisoglu E., Boyraz B., Güneş S. T., Savur Ü., Naki Tekin D. D., Erdoğan A., ...More

PACE - Pacing and Clinical Electrophysiology, vol.44, no.9, pp.1516-1522, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 9
  • Publication Date: 2021
  • Doi Number: 10.1111/pace.14327
  • Journal Name: PACE - Pacing and Clinical Electrophysiology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, CINAHL, EMBASE, MEDLINE, SportDiscus
  • Page Numbers: pp.1516-1522
  • Keywords: atrial arrhythmia, electrocardiogram, obesity, p wave, surgery
  • Istanbul Medipol University Affiliated: Yes


Background: 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).