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 nonsignificant
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.