2017 Volume 81 Issue 6 Pages 799-805
Background:Serum alkaline phosphatase (ALP) is related to vascular calcification. In a recent study on percutaneous coronary intervention (PCI) with a drug-eluting stent, higher ALP was associated with poor clinical outcomes in terms of mortality, myocardial infarction, and stent thrombosis. The aim of this study was to evaluate the relationship between preoperative ALP and clinical outcome of off-pump coronary artery bypass surgery (OPCAB).
Methods and Results:We retrospectively enrolled and reviewed a total of 1,335 patients who underwent OPCAB. Patients were divided into tertiles based on preoperative serum ALP (<60, 60–76, and >76 IU/L). As preoperative ALP increased, the HR of mortality remained constant after adjusting for confounders. On Cox proportional hazards regression analysis, there was no association between ALP and all-cause mortality. The adjusted HR for all-cause mortality for the middle tertile was 0.882 (95% CI: 0.592–1.314, P=0.537), and 0.915 (95% CI: 0.605–1.383, P=0.672) for the highest tertile. In addition, no associations between ALP and cardiovascular mortality, myocardial infarction, revascularization, or major adverse cardiac events were found.
Conclusions:Unlike after PCI, high ALP is not related to adverse clinical events, such as mortality, myocardial infarction, or revascularization after OPCAB. ALP might be considered when determining the optimal revascularization technique.
