Evaluation of Bleeding in Orthopedic Surgery With Perioperative Use of Serotonergic Antidepressants

Annals of Pharmacotherapy, Ahead of Print.
Background:The use of serotonergic antidepressants (SADs) is associated with an increase in bleeding, and their exposure during the perioperative period increases the potential bleeding risk in patients undergoing surgical operations.Objective:The purpose of this study was to compare the rates of bleeding between patients on perioperative SADs and those not on SADs in patients undergoing orthopedic surgical procedures.Methods:A retrospective cohort study was conducted with patients who were admitted to a single tertiary care county teaching hospital for orthopedic surgery. Outcomes evaluated were requirements of ≥ 2 units of packed red blood cells (PRBCs) and length of hospital stay for those requiring ≥ 2 units of PRBCs.Results:Of 273 patients, a significantly higher percentage of patients who received SADs required ≥ 2 units of PRBCs (19.3% vs 6.9%; P = 0.0049). Patients who required transfusion had a higher median (interquartile range [IQR]) age (79 [64-84.6] vs 65 [59-75]; P < 0.0001). The risk of requiring ≥ 2 units of PRBCs transfusion was greater for individuals having an anemia comorbidity (odds ratio [OR], 4.55; 95% CI, 1.95-10.62, P = 0.0004). Patients who required ≥ 2 units of PRBCs had a longer median hospital stay than those who did not receive ≥ 2 units of PRBCs (8 [5-10.1] vs 4 [3-5]; P < 0.0001).Conclusion and Relevance:Receiving SADs in the perioperative period is associated with a higher transfusion requirement in patients undergoing orthopedic surgery. Clinicians should be aware of this increased risk for patients who are taking SADs while undergoing surgical procedures.