The Effect of Obesity on Mortality And Morbidity after Isolated Coronary Artery Bypass Grafting Surgery


Vahideh Koochemeshki 1 , Morteza Amestejani 1 , * , Hamid Reza Salmanzadeh 1 , Shahyad Salehi Ardabili 1

1 Department of Cardiac Surgery, Seyed Al-shohada Cardiovascular Center, Urmia University of Medical Sciences, Urmia, Iran

How to Cite: Koochemeshki V , Amestejani M, Salmanzadeh H R , Salehi Ardabili S . The Effect of Obesity on Mortality And Morbidity after Isolated Coronary Artery Bypass Grafting Surgery, Int Cardio Res J. 2017 ; 6(2):e12814.


International Cardiovascular Research Journal: 6 (2); e12814
Published Online: September 30, 2012
Article Type: Research Article
Received: May 17, 2017
Accepted: March 20, 2012


Background: A retrospective study was conducted to determine whether obesity is a predictor of mortality, morbidity or early readmission to hospital after coronary artery bypass graft (CABG).

Method: We analyzed a large cohort of 1057 patients who had undergone isolated CABG. BMI (body mass index) was used as the measure of obesity. The preoperative, intera operative and postoperative risk factors as well as the complication and 30-day mortality rates were compared between the two groups (624 (65.5%) normal-weight and 328 (34.5%) obese patients). Chi square test and logistic regression were used in univariate and multivariate respectively.

Results: Of the 1057 patients, 59% had a normal weight and 31% were obese. An increased BMI did not increase the risk of 30-day mortality. In addition, increased BMI was not a predictor of the major complications; arrhythmia, renal complications, neurological complications, pulmonary embolism (PE) except myocardial infarction(MI) (1.8% vs 0.3% with p-value= 0.015). Also investigation on mechanical ventilation time, Reintubation, length of stay in ICU, length of stay in hospital, and readmitting as postoperative variables revealed no significant difference on these two groups( normal-weight and obese patients)

Conclusion: Obesity increased myocardial infarction after CABG, but it did not affect the other situations


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