What were the outcomes of the ROOBY trial comparing on-pump CABG to off-pump CABG?
The primary short-term endpoint, a composite of death or complications (reoperation, new mechanical support, cardiac arrest, coma, stroke, or renal failure) within 30 days of surgery, occurred with similar frequency (5.6% for on-pump CABG; 7.0% for off-pump CABG; P 0.19). The primary long-term endpoint, a composite of death from any cause, a repeat revascularization procedure, or a nonfatal myocardial infarction (MI) within 1 year of surgery, occurred more often in those undergoing off-pump CABG (9.9%) than in those having on-pump CABG (7.4%; P 0.04). Neuropsychological outcomes and resource utilization were similar between the 2 groups. One year after surgery, graft patency was higher in the on-pump group (87.8% versus 82.6%; P 0.01).