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Asymptomatic sinus bradycardia following bariatric surgery
Journal article   Peer reviewed

Asymptomatic sinus bradycardia following bariatric surgery

Manish G Malik, Sona M Franklin, Latrisha A Whigham, Andres Castellanos, John M Fontaine and Jason E Cohn
The American journal of cardiology, v 113(6), pp 1049-1053
15 Mar 2014
DOI: https://doi.org/10.1016/j.amjcard.2013.11.069
PMID: 24462072
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

Adult Arrhythmia, Sinus - epidemiology Arrhythmia, Sinus - etiology Arrhythmia, Sinus - physiopathology Bariatric Surgery - adverse effects Blood Pressure Body Mass Index Bradycardia - epidemiology Bradycardia - etiology Bradycardia - physiopathology Electrocardiography Female Follow-Up Studies Heart Rate - physiology Humans Incidence Male Obesity - surgery Pennsylvania - epidemiology Postoperative Complications Postoperative Period Prospective Studies Risk Factors
Approximately 121,000 bariatric surgical procedures are performed annually, and salutary effects include a reduction in cardiovascular morbidity and mortality, risk factor modification, and improvement in sympathovagal tone. There are anecdotal accounts of unexplained sinus bradycardia (SB) after significant weight loss but no systematic studies have been conducted. The purpose of this study was to determine the frequency of incident SB, its timing, and association with weight loss, clinical characteristics, and predictors. We evaluated various clinical characteristics including resting heart rate, blood pressure, body mass index (BMI), heart rate reserve (HRR), basal metabolic rate, and exercise regimen in 151 consecutive patients who underwent bariatric surgery. Multiple logistic regression analysis was performed to determine predictors of SB. Twenty-five of 137 patients (18%) experienced postoperative SB. Patients with SB had significantly greater reduction in BMI than those without bradycardia (35 ± 9.6% and 25.7 ± 13%, respectively, p = 0.002). HRR was significantly greater in patients with SB (116 ± 14 beats/min) compared with those without bradycardia (105 ± 14 beats/min, p = 0.007). Multiple logistic regression analysis revealed that the odds of developing SB were 1.96 and 1.91 and associated with the percent decrease in BMI (95% confidence interval 1.3 to 3.0, p = 0.002) or increase in HRR (95% confidence interval 1.28 to 2.85, p = 0.002), respectively. In conclusion, SB occurred 14 ± 11 months postoperatively and its predictors were the percent reduction in BMI or increase in HRR.

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7 citations in Web of Science
8 citations in Scopus

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Web of Science research areas
Cardiac & Cardiovascular Systems
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