Systemic Hematologic Status Following Intraventricular Recombinant Tissue-Type Plasminogen Activator for Intraventricular Hemorrhage: The CLEAR IVH Study Group

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Abstract

Background and Purpose—

This is the first prospective evaluation of changes in systemic hematologic status following administration of intraventricular recombinant tissue-type plasminogen activator in patients with intraventricular hemorrhage (IVH).

Methods—

Laboratory data from subjects enrolled onto the Clot Lysis: Evaluating Accelerated Resolution of IVH (CLEAR IVH) Trials were analyzed. We analyzed pre- and post- recombinant tissue-type plasminogen activator dosing coagulation parameters. Longer-term changes in hematologic status were studied in subjects who received the study agent after blood clot in the third/fourth ventricles had resolved radiologically.

Results—

Plasma fibrinogen increased significantly in both treatment groups. Dosing did not have a significant impact on any systemic coagulation parameters in either treatment group.

Conclusions—

Intraventricular recombinant tissue-type plasminogen activator is unlikely to impact systemic coagulation or to compound the effects of systemic anticoagulation for deep venous thrombosis prophylaxis.

Clinical Trial Registration—

URL: http://clinicaltrials.gov. Unique identifier: NCT00650858.

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