Sex difference in the prevalence of deep-vein thrombosis in Japanese patients with acute intracerebral hemorrhage.

BACKGROUND

Stroke patients often develop deep-vein thrombosis (DVT), a potential cause of pulmonary thromboembolism. Little information is available on DVT in Asian patients with intracerebral hemorrhage (ICH).

METHODS

We prospectively enrolled consecutive acute ICH patients. The main exclusion criteria were neurosurgical treatment, early death and coagulation disorders. DVT was evaluated using venous duplex ultrasonography on the day of admission, as well as 7 and 14 days later. Underlying characteristics, stroke features and laboratory data on admission were compared between patients who developed DVT by 14 days and those who did not.

RESULTS

A total of 81 (50 men, mean age 65 years, median NIH Stroke Scale, NIHSS, score 12) of 117 Japanese ICH patients were enrolled. DVT was detected in 4 patients on admission and was newly detected in 9 at 7 days. By 14 days, 17 patients (21%) were diagnosed as having DVT without thromboembolic complications, although 1 patient developed pulmonary thromboembolism. DVT was detected in the soleal veins of all 17 patients, followed by the peroneal veins (7 patients). After adjustment for age and related confounders, female sex was the only independent predictor for DVT (odds ratio 6.89, 95% confidence interval, CI, 1.56-36.34, p = 0.014). Female patients with an initial NIHSS score > or =12 had 19 times the risk for DVT compared to men with an NIHSS score <12 (95% CI 2.61-213.77, p = 0.007).

CONCLUSIONS

DVT formation was not rare in Japanese ICH patients. Contrary to previous findings reported from western countries, female sex was strongly associated with DVT formation.