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Obes Surg. 2018 Apr;28(4):932-938. doi: 10.1007/s11695-017-2923-z.

Assessment of Atrial Fibrillation and Ventricular Arrhythmia Risk after Bariatric Surgery by P Wave/QT Interval Dispersion.

Author information

1
Department of Cardiology, Adana Teaching and Research Center, Baskent University, Dadaloğlu Mahallesi, 2591 sokak. No: 4/A 01250 Yüreğir Adana, Türkiye, Adana, Turkey. yilmazmustafa2001@yahoo.com.
2
Department of Cardiology, Baskent University, İzmir, Turkey.
3
Department of Cardiology, Adana Teaching and Research Center, Baskent University, Dadaloğlu Mahallesi, 2591 sokak. No: 4/A 01250 Yüreğir Adana, Türkiye, Adana, Turkey.
4
Department of General Surgery, Baskent University, Adana, Turkey.
5
Department of General Surgery, Baskent University, İzmir, Turkey.
6
Department of Cardiology, Baskent University, Ankara, Turkey.

Abstract

BACKGROUND:

The association of obesity with atrial fibrillation (AF) and with ventricular arrhythmias is well documented.

OBJECTIVE:

The aim of this study was to investigate whether weight reduction by a laparoscopic sleeve gastrectomy has any effect on P wave dispersion (PWD), a predictor of AF, and corrected QT interval dispersion (CQTD), a marker of ventricular arrhythmias, in obese individuals.

METHODS:

In a prospective study, a total of 114 patients (79 females, 35 males) who underwent laparoscopic sleeve gastrectomy were examined. The patients were followed 1 year. PWD and CQTD values before and 3rd, 6th, and 12th months after the surgery were calculated and compared.

RESULTS:

There was a statistically significant decline in body mass index (BMI), PWD, and CQTD values among baseline, 3rd, 6th, and 12th months (p < 0.001 for all comparisons). Correlation analysis showed a statistically significant correlation between ΔPWD and ΔBMI (r = 0.719, p < 0.001), ΔPWD and Δleft ventricular end-diastolic diameter (LVEDD) (r = 0.291, p = 0.002), ΔPWD and Δleft atrial diameter (LAD) (r = 0.65, p < 0.001), ΔCQTD and ΔBMI (r = 0.266, p = 0.004), ΔCQTD and ΔLVEDD (r = 0.35, p < 0.001), ΔCQTD and ΔLAD (r = 0.289, p = 0.002). In multiple linear regression analysis, there was a statistically significant relationship between ΔPWD and ΔBMI (β = 0.713, p < 0.001), ΔPWD and ΔLVEDD (β = 0.174, p = 0.016), ΔPWD and ΔLAD (β = 0.619, p < 0.001), ΔCQTD and ΔBMI (β = 0.247, p = 0.011), ΔCQTD and ΔLVEDD (β = 0.304, p < 0.001), ΔCQTD and ΔLAD (β = 0.235, p = 0.009).

CONCLUSION:

PWD and CQTD values of patients were shown to be attenuated after bariatric surgery. These results indirectly offer that there may be a reduction in risk of AF, ventricular arrhythmia, and sudden cardiac death after obesity surgery.

KEYWORDS:

Arrhythmia; Atrial fibrillation; Bariatric surgery; P wave dispersion; QT interval dispersion; Sudden cardiac death; Ventricular arrhythmia

PMID:
28900850
DOI:
10.1007/s11695-017-2923-z
[Indexed for MEDLINE]

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