title: Impact of obesity on outcome of patients undergoing off-pump coronary artery bypass grafting using aorta no-touch technique.
abstract: We prospectively examined 1359 adult patients undergoing isolated coronary revascularization with the Pi-circuit technique, consisting of beating heart, aorta no-touch, use of composite grafts, and off-pump arterial revascularization. Patients were divided into two groups based on body weight; Group A consisting of 295 (21.7%) obese patients [body mass index (BMI) > or =30 kg/m(2)] and Group B of 1064 (79.3%) non-obese patients (BMI <30 kg/m(2)). Advanced age and emergency surgery favored the non-obese group [63.0+/-10.4 vs. 65.3+/-9.6 years (P<0.0005) and 10.2% vs. 17.1% (P=0.004), with an increase in the number of octogenarians among them (1.7% Group A vs. 5.4% in Group B, P=0.11)]. The use of double internal mammary arteries (90.5% in Group A vs. 86.9% in Group B, P=0.109), the mean number of distal anastomoses (2.8+/-0.9 in Group A vs. 2.7+/-0.9 in Group B, P=0.5) and the number of sequential anastomoses performed (28.1% in Group A vs. 31% in Group B, P=0.3) were similar. No difference in morbidity rates was detected. All cause in-hospital mortality was comparable. Survival was similar in both groups also. Obesity is not a risk factor for morbidity and mortality in this group of patients.
authors.affiliation: Department of Cardiac Surgery, Henry Dunant Hospital, Athens, Greece.
authors.forename: Sotirios N
authors.initials: SN
authors.lastname: Prapas
authors.forename: Ioannis A
authors.initials: IA
authors.lastname: Panagiotopoulos
authors.forename: Mohamed A K
authors.initials: MA
authors.lastname: Salama Ayyad
authors.forename: Demetrios A
authors.initials: DA
authors.lastname: Protogeros
authors.forename: Ioannis N
authors.initials: IN
authors.lastname: Linardakis
authors.forename: Vasilios N
authors.initials: VN
authors.lastname: Kotsis
authors.forename: Anastasia A
authors.initials: AA
authors.lastname: Katinioti
authors.forename: Argyris S
authors.initials: AS
authors.lastname: Michalopoulos
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D016009:Chi-Square Distribution; D047549:Coronary Artery Bypass, Off-Pump / Q000009:adverse effects / Q000401:mortality; D003324:Coronary Artery Disease / Q000150:complications / Q000401:mortality / Q000601:surgery*; D005260:Female; D006115:Greece; D017052:Hospital Mortality; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications* / Q000401:mortality; D011446:Prospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D015996:Survival Rate; D016896:Treatment Outcome