Anesthesia Experience for Tonsillectomy in a Patient With Hypofibrinogenemia: A Case Report

A 26-year-old male patient with hypofibrinogenemia was scheduled to undergo tonsillectomy. Hypofibrinogenemia, defined as low plasma fibrinogen (Fbg) concentration, is a type of congenital Fbg deficiency and is a rare coagulopathy. Perioperative replenishment of Fbg is performed during minor surgeries, aimed at maintaining plasma Fbg concentrations of 50 mg/dL. In this case, failure to replenish Fbg during the postoperative period may have caused the postoperative hemorrhage. Considering the half-life of Fbg (3-4 days), the plasma Fbg concentration should be monitored for ≥6 postoperative days, aiming at a target level of 50 mg/dL during the postoperative period.