Abstract 18409: Long-Term Mortality Following On- and Off-Pump Coronary Artery Bypass Graft Surgery

TL;DRAbstract

Background: There are limited data on the relative survival following on- and off-pump coronary artery bypass graft (CABG) surgery during follow-up periods longer than 5 years. Objectives: To examine the difference in 7-year mortality after on- and off-pump isolated CABG surgery. Methods: A total of 5,940 on-pump and 2,640 off-pump isolated CABG patients discharged between October 1 and December 31, 2000 were identified using the New York State's Cardiac Surgery Reporting System. The patients' vital statuses through the end of 2007 were determined by matching to the National Death Index. We fit a logistic regression model that used the baseline patient characteristics to predict the probability (propensity) of receiving off-pump procedure. Using a 1:1 ratio, we then matched on- and off-pump CABG patients based on the propensity of receiving off-pump procedure. We compared the Kaplan-Meier survival curves for on- and off-pump CABG using the matched data, and fit a Cox proportional hazar

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