Effects of folic acid combined with vitamin B12 on DVT in patients with homocysteine cerebral infarction

OBJECTIVE: To investigate the effects of folic acid combined with vitamin B12 on deep vein thrombosis (DVT) in patients with homocysteine cerebral infarction.

PATIENTS AND METHODS: 90 patients with homocysteine cerebral infarction with DVT that were admitted to our hospital from January to July 2015 were selected as study subjects. They were divided into 2 groups randomly, the treatment group (n=45) and the non-treatment group (n=45). The treatment group was administered folic acid and vitamin B12, while the non-treatment group wasn't administered folic acid and vitamin B12. We compared and analyzed the levels of Hcy, folic acid and vitamin B12 of both groups. We investigated the correlation between the groups of patients with Hcy and folic acid and vitamin B12 treatment. We performed a comparative analysis of both groups of patients with an anticoagulant international normalized ratio (INR). The INR was recorded in detail for the first time as standard time, stable value time, obtain stable INR value time, activated partial thromboplastin time (APTT) and Prothrombin Time (PT) by color Doppler ultrasound observation of both groups with recurrent thrombosis.

RESULTS: We compared results of the intervention and treatment groups, and the prognosis of Hcy decreased significantly (p<0.05). While in the treatment group, folic acid and vitamin B12 levels increased significantly (p<0.05), the non-treatment difference of Hcy, folic acid, and vitamin B12 levels, before and after the patients in the intervention group, were not statistically significant (p>0.05). In the treatment group, Hcy was negatively correlated with folic acid (r=-0.376, p<0.05) while the Hcy of the treatment group was negatively correlated with vitamin B12 (r=-0.583, p<0.05). The intervention treatment group INR first standard time, stable value time and stable INR values were higher than those of non-treatment group (p<0.05). The treatment group APTT average was lower than in the non-treatment group (p<0.05). The average Pt in the treatment group was lower than non-treatment group (p<0.05). In the treatment group, lower limb deep static vein thrombosis recurrence rate was 4.4%, which was lower than the non-treatment group where the lower limb deep vein thrombosis recurrence rate was 28.9% (p<0.05).

CONCLUSIONS:  Hcy is negatively correlated to folic acid and vitamin B12. Folic acid and vitamin B12 can reduce the recurrence rate of thrombosis in patients with lower extremity deep venous thrombosis in patients with Hcy disease. The mechanism of action may be to prevent the recurrence of thrombosis by reducing the levels of Hcy.

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