PT  - JOURNAL ARTICLE
AU  - Yuichi J Shimada
AU  - Yusuke Tsugawa
AU  - Hiroyasu Iso
AU  - David FM Brown
AU  - Kohei Hasegawa
TI  - Association between bariatric surgery and rate of hospitalisations for stable angina pectoris in obese adults
AID  - 10.1136/heartjnl-2016-310757
DP  - 2017 Jul 01
TA  - Heart
PG  - 1009--1014
VI  - 103
IP  - 13
4099  - http://heart.bmj.com/content/103/13/1009.short
4100  - http://heart.bmj.com/content/103/13/1009.full
SO  - Heart2017 Jul 01; 103
AB  - Objective Obesity and stable angina pectoris (SAP) are important public health problems in the USA. However, little is known about whether weight reduction affects the rate of SAP-related morbidities. This study was designed to test the hypothesis that bariatric surgery is associated with a lower rate of hospitalisations for SAP in obese adults.Methods We performed a self-controlled case series study of obese adults with SAP who underwent bariatric surgery using a population-based inpatient database in three states (California, Florida and Nebraska) from 2005 to 2011. The primary outcome was hospitalisation for SAP. We used conditional logistic regression to compare the rate of the outcome event during sequential 12-month periods, using presurgery months 13–24 as a reference period.Results Our sample consisted of 953 patients with SAP who underwent bariatric surgery. The median age was 57 years, 51% were women, and 78% were non-Hispanic white. During the reference period, 25.3% (95%CI, 22.5% to 28.1%) had a hospitalisation for SAP. The rate remained stable in the subsequent 12-month presurgery period (adjusted OR (aOR) 0.84 (95% CI, 0.69 to 1.02); p=0.07). In the first 12-month period after bariatric surgery, we observed a significantly lower rate (9.1% (95% CI, 7.3% to 11.0%); aOR 0.33 (95% CI, 0.26 to 0.43); p<0.0001). Similarly, the rate remained significantly lower in the subsequent 13–24 months after bariatric surgery (8.7% (95% CI, 6.9% to 10.5%); aOR 0.31 (95% CI, 0.24 to 0.41); p<0.0001).Conclusion In this population-based study of obese adults with SAP, we found that the rate of hospitalisations for SAP was lower by two-thirds after bariatric surgery.