[Increased prevalence of APC-resistance (factor V Leiden mutation) in patients with postthrombotic syndrome].

BACKGROUND AND

OBJECTIVE

APC resistance (Factor V Leiden mutation) is the most often diagnosed hereditary thrombolytic defect. Data about the prevalence in patients with leg ulcers, especially postthrombosis, are limited of this defect.

PATIENTS/

METHODS

APC resistance was determined in 100 patients with venous leg ulcers. 53 patients had ulcers caused by postthrombotic syndrome and 47 patients ulcers associated with primary varicosities. A control group of 96 healthy volunteers was also studied.

RESULTS

19 of 53 patients (36%) with postthrombotic ulcers and 3 of 47 patients (6%) with varicosity-related ulcers had APC resistance. In the control group APC resistance was detected in 5 of 96 volunteers (5%).

CONCLUSIONS

APC resistance should be considered as a risk factor for the development of venous leg ulcers.