• Mohammad A Helwani, Charl J De Wet, Bethany Pennington, Sami Abdulnabi, and Marc R Moon.
• Department of Anesthesiology, Washington University, St. Louis, MO. Electronic address: helwanim@wustl.edu.
• J. Cardiothorac. Vasc. Anesth. 2023 Apr 1; 37 (4): 513518513-518.

ObjectiveTo determine the effect of severe acute blood loss anemia (ABLA) on postoperative outcomes in Jehovah's Witness (JW) patients undergoing cardiac surgery.DesignThis was a retrospective cohort study of adult JW patients undergoing cardiac surgery requiring cardiopulmonary bypass (CPB) between January 1998 and December 2018 at Barnes-Jewish Hospital in St. Louis, Missouri.SettingAt a single tertiary academic center.ParticipantsPatients who were JWs undergoing cardiac surgery requiring CPB.InterventionsPatients were divided into the following 2 groups: JW patients who developed severe ABLA (defined as postoperative hematocrit level <21), and patients who did not develop severe ABLA.Measurements And Main ResultsA total of 48 JW patients who underwent cardiac surgery between 2008 and 2018 were identified. Of these patients, 9 (18.8%) developed postoperative severe ABLA, and 39 (81.3%) did not. Severe ABLA was associated with increased postoperative mortality at 30-days, 90-days, and 1-year postoperatively, and a trend toward increased hospital length of stay.ConclusionsSevere ABLA after cardiac surgery was associated with higher mortality and a trend toward increased hospital length of stay among JW patients. More data are required to confirm the findings.Copyright © 2022 Elsevier Inc. All rights reserved.

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