Intraoperative intravenous administration of rFVIIa and hematoma volume after early surgery for spontaneous intracerebral hemorrhage: a randomized prospective phase II study

Direzione Scientifica, Policlinico S. Matteo Fondazione IRCCS, Pavia, Italy. r.imberti@smatteo.pv.it

Minerva Anestesiologica. 2012;78((2):):168-75.
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Abstract
BACKGROUND Surgery of spontaneous supratentorial intracerebral hemorrhage (ICH), especially if performed early, can be complicated by rebleeding, a condition that can worsen the outcome. We evaluated the effect of recombinant activated factor VII (rFVIIa) on postoperative rebleeding. METHODS In this randomized, open-label, single-blinded study, 21 patients with spontaneous supratentorial ICH diagnosed by computed tomography (CT) scan were treated with intravenous rFVIIa (100 mcg/Kg b.w., N=13) or placebo (N=8). Hematoma volume was assessed using CT scan immediately, 18-30 hours, and 5-7 days after hematoma evacuation. The primary endpoint was a hematoma volume at 18-30 hours after surgery. All CT scans were evaluated at one center by the same investigator who was unaware of the treatment. Hematoma volume was measured using dedicated software. RESULTS At baseline, the hematoma volume was 59.2+/-27.4 and 71.5+/-32.1 mL in the rFVIIa and placebo group, respectively. Hematoma evacuation resulted in significantly smaller ICH volumes that were similar in the rFVIIa and placebo group at 18-30 hours after surgery (15.9+/-14.2 mL and 18+/-15.1 mL, respectively; mean difference 2.1 mL, 95% confidence interval -12.1 to 16.2, P=0.76 (0.03 mL after adjustment for baseline value)). The frequencies of deep venous thrombosis, myocardial infarction, troponin I elevation and cerebral ischemia were similar in both groups. CONCLUSION In this pilot study, intraoperative, intravenous rFVIIa administration did not modify hematoma volume after early ICH surgery. However, the 95% CI was wide, which indicates considerable uncertainty. Therefore, our results do not disprove the potential benefit of rFVIIa administration, which could be shown in a larger study.
Study details
Additional Material : Comment in: Minerva Anestesiol. 2012 Feb;78(2):142-3; PMID: 22293919
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