Objectives: To analyze the effect of body mass index (BMI) on early outcome of patients after coronary artery bypass grafting (CABG) surgery
Patients & Methods: The study included all patients assigned for CABG surgery. Patients were categorized according to BMI index into underweight; normal weight, overweight, Obese class I-III. Preoperative demographic and clinical data and operative data were recorded. Postoperative (PO) data including duration of ICU stay, amount of chest tube drainage, frequency of PO events were recorded and categorized according to BMI of studied patients.
Results: Obesity was more predominant among females with significantly higher frequency of high BMI among females. Obesity was significantly associated with co-morbidities especially diabetes mellitus and dyslipidemia. There was non-significant difference between studied groups as regards age and left ventricular ejection fraction (EF). The frequency of GIT manifestations was significantly higher in overweight-obese patients compared to underweight patients. Fourteen patients developed PO pneumonia and 15 patients developed PO stroke with significantly higher frequency among underweight patients compared to normal weight and overweight-obese patients. Other morbidities and mortality showed non-significant difference between studied patients. Mean PO hospital stay was 9.6±1.9; range: 7-15 days with non-significant difference between studied groups.
Conclusion: CABG surgery in obese patients up to >40 kg/m2 is feasible and safe procedure. The frequency of PO morbidities was non-significantly higher compared to normal weight patients. The GIT manifestations were the most frequent PO morbidities of obese patients. Underweighted patients were more risky candidates of CABG surgery and were more vulnerable to develop PO morbidities especially pneumonia.
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