Anesthetic management of a patient with hemophilia B during scoliosis surgery
2013
: Posterior spinal fusion for scoliosis was planned in a 14-year-old male patient with hemophilia B. Preoperative examination showed factor IX activity of 8.4% with no inhibitor development. A perioperative dosage schedule was prepared after examining the pharmacokinetics of recombinant coagulation factor IX in order to maintain levels of perioperative factor IX activity at or = 40% for days 7-14 postoperatively. The dose of recombinant coagulation factor IX was adjusted to maintain factor IX activity above 80%, while measuring coagulation activity every hour during the surgery. The patient showed a favorable course without hemorrhagic tendency. We could safely manage anesthesia without requiring allogeneic blood transfusion.
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