The role of recombinant activated factor VII in neurosurgery: hope or hype?
Recombinant activated factor VII (rFVIIa) is a relatively new pharmaceutical agent developed for use in patients with hemophilia in whom inhibitors to clotting factors VIII or IX have developed. Use of this drug has become common in recent years because of its efficacy and safety in patients with coagulation disorders as well as in patients who are at high risk for thromboembolism, even when other means of establishing hemostasis have failed. The use of rFVIIa in neurosurgery has lagged behind its use in other fields, although there is a growing body of literature on such uses. In this article the authors review the history and science of rFVIIa as well as dosing and safety information. Various uses pertinent to the neurosurgeon are reviewed, including the treatment of patients with coagulation disorders, those suffering trauma, and those with perioperative hemorrhage, intracerebral hemorrhage, or subarachnoid hemorrhage. Based on their review of the uses of rFVIIa, the authors conclude that rFVIIa is a safe and effective agent with the potential to revolutionize the treatment of neurosurgical patients with hemorrhage. Cost is a major impediment to the widespread use of rFVIIa, and there is some evidence that its use in the neurosurgical population may be subject to higher risk than in other populations studied thus far. Although further study is needed to better delineate the safety and efficacy of the drug in many nonlicensed uses, it is clear that rFVIIa is an agent with tremendous promise.
Hawryluk
Gregory W J
GW
Division of Neurosurgery, St. Michael's Hospital, University of Toronto, Ontario, Canada.
Cusimano
Michael D
MD
D000818:Animals; D001760:Bleeding Time; D002543:Cerebral Hemorrhage / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D016527:Drug Costs; D015942:Factor VIIa / Q000008:administration & dosage* / Q000191:economics; D006488:Hemostasis, Surgical; D006801:Humans; D009493:Neurosurgery; D011994:Recombinant Proteins / Q000008:administration & dosage / Q000191:economics; D016896:Treatment Outcome
D011994:Recombinant Proteins; D015942:Factor VIIa