Abstract
Blood transfusion in cardiac surgery patients is associated with increased morbidity and cost. The decision to transfuse patients after surgery varies but is often based on low hemoglobin (Hgb) levels, regardless of symptom status. This study examined whether asymptomatic patients discharged with lower Hgb levels had increased risk for perioperative complications and 1-year mortality. Between 2008 and mid-2014, a total of 1107 valve-only procedures were performed. Patients discharged alive with complete data (N = 1044) were divided into 2 groups with discharge Hgb levels of ≤8 g/dL (n = 153) or >8 g/dL (n = 891). Propensity score matching was conducted between Hgb groups, resulting in 152 patient pairs. In multivariate analyses, discharge Hgb level did not predict 30-day mortality (odds ratio [OR] = 1.01, P = .991), 1-year survival (hazard ratio [HR] = 0.87, P = .34), or readmission <30 days (OR = 0.92, P = .31). Furthermore, after propensity score matching, no differences were found between groups with Hgb levels ≤8 versus >8 g/dL in 30-day mortality (0% vs 0.7%, P > .99) or readmissions (14% vs 16%, P = .52). Cumulative 1-year survival was similar between matched groups with discharge Hgb level of ≤8 versus >8 g/dL (89.3% vs ...Continue Reading
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