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  • Title: Early readmission of low-risk patients after coronary surgery.
    Author: Sun X, Zhang L, Lowery R, Petro KR, Hill PC, Haile E, Garcia JM, Bafi AS, Boyce SW, Corso PJ.
    Journal: Heart Surg Forum; 2008 Dec; 11(6):E327-32. PubMed ID: 19073528.
    Abstract:
    BACKGROUND: Early readmission after coronary artery bypass grafting (CABG) is an expensive adverse outcome. Although the perioperative experience of high-risk CABG patients has been studied extensively, little attention has been paid to low-risk CABG patients. The primary goal of this study was to identify the preoperative characteristics and to define risk predictors of readmission and preventive factors for readmission in low-risk isolated-CABG patients. METHODS: We identified 2157 patients who underwent CABG between January 2000 and December 2005 at Washington Hospital Center, Washington, DC, and defined as low risk patients who had a Parsonnet bedside risk score lower than the 25th percentile. Patients who were rehospitalized within 30 days after surgery were compared with those who were not rehospitalized during this period. RESULTS: The overall readmission rate for this study cohort was 6.3%. Compared with non-readmitted patients, early-readmitted patients were more likely to have diabetes mellitus (27.94% versus 20.88%, P = .05) and less likely to have hypertension (42.65% versus 51.36%, P = .05). Blood product transfusion (P < .01), postoperative length of intensive care unit stay (P = .01), and length of hospital stay (P = .05) were all significantly increased in the readmitted patients. The use of beta-blockers (P = .03) and angiotensin-converting enzyme inhibitors (P = .04) was significantly lower at discharge in this group of patients; however, multivariate regression analysis demonstrated diabetes (odds ratio, 1.59; 95% confidence interval, 1.08-2.42) to be the only independent predictor of early readmission. CONCLUSIONS: For low-risk CABG patients, diabetes mellitus is the risk predictor of early readmission. Early discharge was not associated with early readmission.
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