Haemostasis · 2000
Anticoagulant therapy modifies fibrinolytic dysfunction in chronic atrial fibrillation.
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Roldán V, Marín F, Marco P, Climent V, Martínez J G, Monmeneu J V, Bodí V, Garri F S
Аннотация
OBJECTIVE: We evaluated the changes in fibrinolytic activation markers before starting anticoagulation, at 1 and 6 months following the introduction of anticoagulant therapy.
DESIGN AND METHODS: Tissue plasminogen activator (t-PA), its endothelial inhibitor (PAI-1), plasmin:antiplasmin complexes (PAPc), modified antithrombin III (ATM), D dimer (D-D) and fibrinogen (FIB) were measured in 36 patients with chronic atrial fibrillation. Fifteen of them had rheumatic mitral stenosis and 21 had nonrheumatic atrial fibrillation. Basal levels were compared with a sex- and age-matched healthy control group.
RESULTS: At baseline, patients with atrial fibrillation showed significantly higher plasma levels of PAI-1, ATM, D-D and FIB levels (p < 0.05) than controls, and no differences in t-PA and PAPc concentrations. Levels of t-PA, PAI-1, ATM and D-D decreased significantly under anticoagulant therapy, whereas FIB levels were not significantly modified. PAPc levels were significantly increased at 6 months in the rheumatic group but did not differ significantly in the nonrheumatic group.
CONCLUSIONS: Patients with chronic atrial fibrillation show a hypercoagulant state and a relatively low fibrinolytic function. After 6 months of anticoagulant therapy, an improvement in fibrinolytic function markers was detected.
DESIGN AND METHODS: Tissue plasminogen activator (t-PA), its endothelial inhibitor (PAI-1), plasmin:antiplasmin complexes (PAPc), modified antithrombin III (ATM), D dimer (D-D) and fibrinogen (FIB) were measured in 36 patients with chronic atrial fibrillation. Fifteen of them had rheumatic mitral stenosis and 21 had nonrheumatic atrial fibrillation. Basal levels were compared with a sex- and age-matched healthy control group.
RESULTS: At baseline, patients with atrial fibrillation showed significantly higher plasma levels of PAI-1, ATM, D-D and FIB levels (p < 0.05) than controls, and no differences in t-PA and PAPc concentrations. Levels of t-PA, PAI-1, ATM and D-D decreased significantly under anticoagulant therapy, whereas FIB levels were not significantly modified. PAPc levels were significantly increased at 6 months in the rheumatic group but did not differ significantly in the nonrheumatic group.
CONCLUSIONS: Patients with chronic atrial fibrillation show a hypercoagulant state and a relatively low fibrinolytic function. After 6 months of anticoagulant therapy, an improvement in fibrinolytic function markers was detected.