Background: The hemostatic system plays an important role in thrombotic lesions, which can complicate the clinical course of hypertensive patients. The aim of this study was to verify a possible activation of the blood clotting processes, the evaluation of two markers of thrombin activation in 62 hypertensive patients, with and without vascular complications, compared with a control group. Methods and Results: In 22 patients with newly diagnosed uncomplicated essential hypertension, in 40 hypertensive patients with clinically evident vascular complications (20 patients with controlled blood pressure and 20 with uncontrolled and high blood pressure) and in 20 normotensive sex- and age-matched subjects, two indexes of thrombin generation and action, namely prothrombin fragment 1 + 2 (F1 + 2) and fibrinopeptide A (FPA) were evaluated. The observed values show an increase of the F1 + 2 levels in patients with overt vascular complications; those with higher blood pressure, moreover, showed FPA levels higher than those with controlled blood pressure. Conclusions: These results seem to indicate that plasma F1 + 2 levels are significantly elevated, as a marker of a thrombosis-prone status, in patients with organic damage. Successively, with progress of hypertension and increasing blood pressure, the evidence of elevated FPA levels seems to indicate a clear prethrombotic situation which could turn into a thrombotic state.

Keywords:
Hypertension, Coagulation, Blood pressure
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© 2001 S. Karger AG, Basel
2001
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