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Fibrinolytic and factor XIII activity in subarachnoid hemorrhage

Actividad fíbrinolítica y del factor XIII en la hemorragia subaracnoidea

Abstracts

The balance between fibrinolytic activity and coagulation mechanisms seems to play an important role in the rebleeding of a subarachnoid hemorrhage (SAH) due to aneurysmatic rupture. In the present paper we describe our findings in a group of patients (n10) with S AH. The plasmatic levels of fibrinogen and their degradation products (FDP), APTT, prothrombin activity and factor XIII were determined within 72 hours of initial bleeding, or of eventual rebleeding. Factor XIII activity in the first bleeding was 82.1 ±4%, while the levels of FDP were 3.8±lmg/ml. In patients presenting rebleeding (n4), Factor XIII activity was 67.3±4.5% the day it manifested, which is significantly less than the values previously observed (p<0.01), while the FDP level was 4.1±2mg/ml. The decrease of factor XIII activity suggests an important role as regards clot stability in rupture location. It is also possible to attribute a rebleeding predictive value to its activity reduction.

factor XIII activity; subarachnoid hemorrhage; aneurysm rebleeding


El balance entre la actividad fíbrinolítica y los mecanismos de la coagulación juegan un rol importante en el resangrado de una hemorragia subaracnoidea debido a ruptura aneurismástica. En el presente estúdio se describen nuestros hallazgos en un grupo de pacientes (n10) con hemorragia subaracnoidea (SAH). Los niveles plasmaticos de fibrinogeno y sus productos de degradation (FDP), la actividad de protrombina (APTT) y de factor XIII fueron determinados dentro de las 72 hs, dei sangrado inicial y ante el eventual resangrado. La actividad de factor XIII en el primer sangrado fue de 82,1±4%, mientras el nivel de FDP fue de 3,8±lmg/ml. En aquellos pacientes que resangraron (n4), la actividad de factor XIII fue de 67,3+4,5%, el dia del resangrado, el cual es significativamente menor que los valores previamente observados (p<0.01), mientras que los niveles de FDP fueron 4,1± 2mg/ml. La reduction de la actividad de factor XIII sugiere un importante rol de este en la establilidad del coágulo en el sitio de ruptura aneurismática, siendo posible atribuir un valor predicitivo a la reduction de su actividad.

actividad de factor XIII; hemorragia subaracnoidea; resangrado aneurismático


Fibrinolytic and factor XIII activity in subarachnoid hemorrhage

Actividad fíbrinolítica y del factor XIII en la hemorragia subaracnoidea

Luis A. Pliego; Salomon Muchnik

Alfredo Lanari Institute for Medical Research School of Medicine, University of Buenos Aires, Buenos Aires, Argentina: M.D.

ABSTRACT

The balance between fibrinolytic activity and coagulation mechanisms seems to play an important role in the rebleeding of a subarachnoid hemorrhage (SAH) due to aneurysmatic rupture. In the present paper we describe our findings in a group of patients (n10) with S AH. The plasmatic levels of fibrinogen and their degradation products (FDP), APTT, prothrombin activity and factor XIII were determined within 72 hours of initial bleeding, or of eventual rebleeding. Factor XIII activity in the first bleeding was 82.1 ±4%, while the levels of FDP were 3.8±lmg/ml. In patients presenting rebleeding (n4), Factor XIII activity was 67.3±4.5% the day it manifested, which is significantly less than the values previously observed (p<0.01), while the FDP level was 4.1±2mg/ml. The decrease of factor XIII activity suggests an important role as regards clot stability in rupture location. It is also possible to attribute a rebleeding predictive value to its activity reduction.

Key words: factor XIII activity, subarachnoid hemorrhage, aneurysm rebleeding.

RESUMEN

El balance entre la actividad fíbrinolítica y los mecanismos de la coagulación juegan un rol importante en el resangrado de una hemorragia subaracnoidea debido a ruptura aneurismástica. En el presente estúdio se describen nuestros hallazgos en un grupo de pacientes (n10) con hemorragia subaracnoidea (SAH). Los niveles plasmaticos de fibrinogeno y sus productos de degradation (FDP), la actividad de protrombina (APTT) y de factor XIII fueron determinados dentro de las 72 hs, dei sangrado inicial y ante el eventual resangrado. La actividad de factor XIII en el primer sangrado fue de 82,1±4%, mientras el nivel de FDP fue de 3,8±lmg/ml. En aquellos pacientes que resangraron (n4), la actividad de factor XIII fue de 67,3+4,5%, el dia del resangrado, el cual es significativamente menor que los valores previamente observados (p<0.01), mientras que los niveles de FDP fueron 4,1± 2mg/ml. La reduction de la actividad de factor XIII sugiere un importante rol de este en la establilidad del coágulo en el sitio de ruptura aneurismática, siendo posible atribuir un valor predicitivo a la reduction de su actividad.

Palabras-llave: actividad de factor XIII, hemorragia subaracnoidea, resangrado aneurismático.

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

Aceite: 12-março-1997.

Salomon Muchnik, MD - Donato Alvarez 3150 - (1427) Buenos Aires - Argentina. FAX 541 823 3426.

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Publication Dates

  • Publication in this collection
    18 Oct 2010
  • Date of issue
    Sept 1997
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