Sultana Habib, Arifur Rehman, Parveen Akhter, Amin Salma, Younus Khatri.
Frequency of obesity and its risk of adverse outcomes associated with Coronary Artery Bypass Surgery.
Pak J Cardiol Jan ;18(3-4):49-54.

We aimed to investigate the prevalence of obesity in patients undergoing CABG, to assess in these patients the distribution of prognostic factors and the early outcomes after surgery. It was a perspective, observational and descriptive study, conducted at National Institute of Cardiovascular Diseases (NICVD) Karachi. All patients underwent first and elective CABG whether underwent on or off-pump were included. The prognostic variables noted were: age, gender. coronary risk profile, h/o prior myocardial infarction or unstable angina, cerebrovascular accident. The degree of obesity was assessed by BMI derived from Quetelet`s formula i.e. Underweight (<20 kg/m2) Normal (> 20 and <25 kg/m), Overweight ( > 25 and <30kg/m2), Obese ( >30 and <35 kg/m2) and Severely obese > 35 kg/m2. RESULTS: Total of 115 patients underwent CABG during the study period. Patients were classified as underweight 6 (5%); as normal weight 57 (50.9%); as overweight 38 (33.9%); as obsess 5 (4.2%); and as severely obese 6(5%). Total obese patients were 11 (10%). The incidence was more in obese patients as regard to postoperative arrhythmias 5 (45%); pulmonary complications 5 (45%); hours ventilated > 10 5 (45%); perioperative MI occurred only obese patients 1 (9%) as compared to non-obese. There was no incidence of CVA, surgical and renal complications in obese patients.

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