Predictors of Readmission for Complications of Coronary Artery Bypass Graft Surgery

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Abstract
Coronary artery bypass graft (CABG) surgery may be the most frequently studied of all surgical procedures, probably in part due to its expense, the frequency with which it is performed, and the fact that it relates to coronary heart disease, the most common cause of death in the United States.1 Furthermore, various groups have found that short-term perioperative mortality can be accurately predicted on the basis of a relatively small set of preoperative patient risk factors. Many of CABG surgery studies compare observed and predicted mortality as a measure of provider (hospital or surgeon) performance (quality of care). In fact, several states and regions currently have programs and data systems that are used to assess provider performance and disseminate it to hospitals and the public.2-9 Other countries have also engaged in this type of activity.10