A study at Johns Hopkins Hospital assessed the added predictive value of including receipt of intraoperative transfusion to the Surgical Apgar Score (SAS). The authors conclude that, “In summary, inclusion of intraoperative transfusion in a modified SAS significantly improves the ability of the score to risk-stratifying patients with regards to postoperative morbidity and mortality. Taken together, given the variability of intraoperative transfusion usage, its discordance with EBL (estimated blood loss), and its strong negative impact on postoperative outcomes, the inclusion of intraoperative transfusion should be included in a modified SAS.” Intraoperative patient hemodynamic parameters (heart rate, mean arterial pressure, systolic pressure, diastolic pressure, respiratory rate, temperature) and transfusion utilisation data were extracted from MetaVision.
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