Abstract
Background: The aim of this study was to quantify the effect of obesity on early results after coronary artery bypass grafting (CABG). Methods: A retrospective cohort study of patients underwent isolated CABG from January 2000 through December 2012 was conducted. 586 patients were classified into two groups: Obese (n = 100) BMI ≥ 30 kg/m2 and non-obese (n = 486) BMI ≤ 30kg/m2. Results: The obese patients included more women (p 0.01), hypertensives (p = 0.01) and dyslipidemics (p = 0001). The CPB, aortic champ times and number of bypass graft were similar between the groups (p = 0.35, p = 0.51 and p = 0.59 respectively). Also the composite of in-hospital mortality and postoperative complication didn’t differ between the groups. The incidence of perioperative myocardial infarction, and need for inotropic drugs or IABP were significantly less in obese patients (p = 0.028, p = 0.031 and p 0.01 respectively). Conclusions: The current study showed that obesity is not a risk factor of adverse events after CABG and continuous to give another aspect of the “obesity paradox”.
Highlights
Obesity is a serious public health problem in most occidental countries [1] [2]
The current study showed that obesity is not a risk factor of adverse events after coronary artery bypass grafting (CABG) and continuous to give another aspect of the “obesity paradox”
There were 486 (82.9%) non-obese patients (BMI < 30 kg/m2) and 100 (17.1%) obese (BMI ≥ 30 kg/m2). the mean age of the patients was similar in two groups 58.9 ± 8.7 years and 58.5 ± 9.1 years (p = 0.64)
Summary
Most studies comparing the repercussion of overweight and obesity on short and long-term outcomes in patients undergoing myocardial revascularization found that obesity had negative effect on results after cardiac surgery [6] [7] [8]. This study compared the short outcomes between obese and non-obese patients who underwent coronary artery bypass grafting (CABG). The aim of this study was to quantify the effect of obesity on early results after coronary artery bypass grafting (CABG). 586 patients were classified into two groups: Obese (n = 100) BMI ≥ 30 kg/m2 and non-obese (n = 486) BMI ≤ 30kg/m2. The CPB, aortic champ times and number of bypass graft were similar between the groups (p = 0.35, p = 0.51 and p = 0.59 respectively). Conclusions: The current study showed that obesity is not a risk factor of adverse events after CABG and continuous to give another aspect of the “obesity paradox”
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