Recombinant human activated factor VII is thrombogenic in a rabbit model of cyclic flow reduction and does not reduce intra-abdominal bleeding.
Thromb Haemost
; 97(2): 296-303, 2007 Feb.
Article
en En
| MEDLINE
| ID: mdl-17264960
Recombinant human activated factor VII (rHuFVIIa) can reduce bleeding but may be associated with arterial thrombosis. We hypothesized that rHuFVIIa would increase the occurrence of cyclic flow reductions (CFR) and reduce intra-abdominal bleeding in an experimental model. An adapted Folts' model of carotid artery lesion and stenosis was used. Twenty four rabbits were randomized to receive rHuFVIIa (group F) or placebo (group P) in a double-blind fashion. A standardized injury to the common carotid artery resulted in CFR and/or thrombosis. Hematological values, coagulation and thromboelastographic (TEG) variables were compared. Intra-abdominal bleeding was evaluated by measuring blood loss from standardized hepatosplenic lesions. The median number (range) of spontaneous CFR [group P: 6 (0-15); group F: 8 (0-16)] was comparable between groups. The number of induced CFR (by "shaking" of the artery) needed to avert thrombosis (group F: 2; group P: 0; p < 0.05) and the incidence of complete carotid artery thrombosis (group F: 3; group P: 0; p < 0.05) were higher in group F. Intra-abdominal bleeding was similar in both groups. TEG analysis demonstrated a hypercoagulable state in both groups but the magnitude of the change was statistically more important in group F. rHuFVIIa increases thrombosis in a rabbit model of carotid artery injury. The bleeding from hepatic and splenic lesions is not reduced by administration of rHuFVIIa despite a hypercoagulable state confirmed by standard TEG analysis.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Coagulación Sanguínea
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Velocidad del Flujo Sanguíneo
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Coagulantes
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Trombosis de las Arterias Carótidas
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Factor VIIa
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Hemorragia
Tipo de estudio:
Clinical_trials
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Etiology_studies
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Prognostic_studies
Límite:
Animals
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Humans
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Male
Idioma:
En
Revista:
Thromb Haemost
Año:
2007
Tipo del documento:
Article
País de afiliación:
Canadá
Pais de publicación:
Alemania