Hipercoagulabilidad en fibrilación auricular y su relación con factores de riesgo para embolia sistémica / Hypercoagulable state in atrial fibrillation and its relationship with risk factors for systemic embolism
Rev. méd. Chile
;
130(10): 1087-1094, oct. 2002. tab, graf
Artigo
em Espanhol
| LILACS
| ID: lil-339170
ABSTRACT
Background: Atrial fibrillation is associated to a high risk of systemic embolism and to hypercoagulability. Aim: To evaluate the activation of the coagulation cascade through determinations of the thrombin-antithrombin complex in patients with atrial fibrillation and to correlate this data with the clinical and echocardiographic risk factors for systemic embolism. Patients and Methods: In 53 patients with atrial fibrillation plasma levels of the thrombin-antithrombin complex were determined on admission to a coronary care unit and 30 days later. Using a univariate and multiple regression analysis, the association basal thrombin-antithrombin with the duration of the arrhythmia, age over 70 years, previous use of antiplatelet agents, history of hypertension, mitral valve disease, diabetes, heart failure, previous systemic embolism, left atrial diameter and the presence of spontaneous contrast echo or thrombus in the left atrial appendage, was studied. Results: Basal thrombin-antithrombin values were 40.1ñ69 mg/L (Median 8.34 [3.0-47.5]) compared to 2.7ñ3.3 mg/L in healthy controls (p <0.001). No significant correlation was found between activation of the coagulation cascade and risk factors for systemic embolism. There were no significant differences in thrombin-antithrombin values between patients with chronic or paroxysmal atrial fibrillation (29.5ñ43 mg/L and 49.4ñ83 mg/L respectively). Mean thrombin-antithrombin values in patients under antiplatelet agents were lower than in those without treatment (17.3ñ43 vs 66.8ñ127 mg/L; p=0.018). Conclusions: The activation of the coagulation cascade in patients with atrial fibrillation was confirmed. However, no association of this activation with well known clinical and echocardiographic risk factors for systemic embolism, was found. Previous antiplatelet treatment prevented a higher activation of the coagulation cascade
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Fibrilação Atrial
/
Trombofilia
Tipo de estudo:
Estudo diagnóstico
/
Estudo de etiologia
/
Estudo observacional
/
Fatores de risco
Limite:
Feminino
/
Humanos
/
Masculino
Idioma:
Espanhol
Revista:
Rev. méd. Chile
Assunto da revista:
Medicina
Ano de publicação:
2002
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Chile
Instituição/País de afiliação:
Pontificia Universidad Católica de Chile/CL
Similares
MEDLINE
...
LILACS
LIS