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  • Anesthesia and analgesia · Nov 2021

    Postoperative Hematocrit and Adverse Outcomes in Pediatric Cardiac Surgery Patients: A Cross-Sectional Study From the Society of Thoracic Surgeons and Congenital Cardiac Anesthesia Society Database Collaboration.

    • Justin B Long, Branden M Engorn, Kevin D Hill, Liqi Feng, Karen Chiswell, Marshall L Jacobs, Jeffrey P Jacobs, and Dheeraj Goswami.
    • From the Department of Pediatric Anesthesiology, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, Georgia.
    • Anesth. Analg. 2021 Nov 1; 133 (5): 107710881077-1088.

    BackgroundWe sought to examine potential associations between pediatric postcardiac surgical hematocrit values and postoperative complications or mortality.MethodsA retrospective, cross-sectional study from the Society of Thoracic Surgeons Congenital Heart Surgery Database (STS-CHSD) and Congenital Cardiac Anesthesia Society Database Module (2014-2019) was completed. Multivariable logistic regression models, adjusting for covariates in the STS-CHSD mortality risk model, were used to assess the relationship between postoperative hematocrit and the primary outcomes of operative mortality or any major complication. Hematocrit was assessed as a continuous variable using linear splines to account for nonlinear relationships with outcomes. Operations after which the oxygen saturation is typically observed to be <92% were classified as cyanotic and ≥92% as acyanotic.ResultsIn total, 27,462 index operations were included, with 4909 (17.9%) being cyanotic and 22,553 (82.1%) acyanotic. For cyanotic patients, each 5% incremental increase in hematocrit over 42% was associated with a 1.31-fold (95% confidence interval [CI], 1.10-1.55; P = .003) increase in the odds of operative mortality and a 1.22-fold (95% CI, 1.10-1.36; P < .001) increase in the odds of a major complication. For acyanotic patients, each 5% incremental increase in hematocrit >38% was associated with a 1.45-fold (95% CI, 1.28-1.65; P < .001) increase in the odds of operative mortality and a 1.21-fold (95% CI, 1.14-1.29; P < .001) increase in the odds of a major complication.ConclusionsHigh hematocrit on arrival to the intensive care unit (ICU) is associated with increased operative mortality and major complications in pediatric patients following cardiac surgery.Copyright © 2021 International Anesthesia Research Society.

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