Objective To investigate the onset and risk factors of the transient ischemic attack of vertebrobasilar artery vertige in old patients. Methods Patients were divided into group A, group B, group C based on attack times of vertige and whether cerebral thrombosis was formed within half a year. Blood biochemistry index, blood pressure variation, carotid ultrasonic examination results in the first 24 hours were compared. Results High sensitive C-reactive protein (hs-CRP), systolic blood pressure (SBP), diastolic blood pressure(DBP), blood sugar(BS), cholesterol(TC), triglyceride(TG), common carotid artery resistance of group A index(CCARI), internal carotid artery resistance index(ICARI) and atherosis plaque index in the first 24 hours were significantly lower than those of group C (P0.05). Logistic regression indicated that hs-CRP, DBP, BS, TC, CCARI, ICARI and plaque index were correlated with risk factors of the transient ischemic attack of vertebrobasilar artery vertige and cerebral thrombosis in old patients. Conclusion hs-CRP, SBP, BS, TC, CCARI, ICARI and plaque index elevation might be an early warning index for the unstability and easy drop of the carotid's plaque.

OBJECTIVE:To discuss the effect of folic acid on the homocysteine(Hcy)and flow-mediated vasodilation and cog-nitove function in the treatment of elderly patients with cerebral infarction. METHODS:The data of 198 elderly patients with cere-bral infarction was randomly divided into the observation group and the control group by different medication. Control group was treated with conventional treatment;based on the treatment of control group,observation group was orally treated with Folic acid tabelts 5 mg,once a day. The treatment course of 2 groups was 8 weeks. The Hcy level and flow-mediated vasodilation(FMD)be-fore and after treatment,mini-mental state examination (MMSE) score and incidence of adverse reactions in 2 groups were ob-served. RESULTS:After treatment,Hcy level in observation group was significantly lower than before and control group,FMD was significantly higher than before and control group(P<0.01). MMSE score in observation group was significantly higher than control group(P<0.01). There were no obvious adverse reactions in 2 groups during treatment. CONCLUSIONS:Based on the con-ventional treatment,folic acid can effectively reduce the Hcy level of elderly patients with cerebral infarction,improve the cogni-tive function and reduce the brain tissue damage,with good safety.