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  • Title: [Study on the risk factors of deep venous thrombosis in acute hospitalized stroke patients].
    Author: Sun KK, Wang C, Pang BS, Yang YH, He W, Chen TF, Zhao QH, Zhang J.
    Journal: Zhonghua Liu Xing Bing Xue Za Zhi; 2004 Dec; 25(12):1019-23. PubMed ID: 15769354.
    Abstract:
    OBJECTIVE: To identify the risk factors of deep venous thrombosis (DVT) in hospitalized patients with acute stroke, under a perspective case-control study. METHODS: 488 cases with stroke, identified by CT or MRI and admitted to the department of neurology and neurosurgery in Beijing Chaoyang Hospital between December 2001 and December 2002 were consecutively studied. There were 328 male and 160 female patients (95.5% Hans) with a mean age of 65 +/- 11 years, ranging 22 - 93 years. The procedure of study would include: (1) General condition, possible risk factors, symptoms of DVT physical check-up to every eligible patient on first day of admission but the plasma concentrations of D-dimer (ELISA), thrombomodulin, antithrombin-III and blood routine examination were measured on the next morning. (2) The ultrasonography (US) was used for detecting both lower extremities at 7 - 10 days after the onset of stroke, and D-dimer and AT-III tests were repeated on the same or next day that the US was taken. (3) The ultrasound examination was repeated after a week in patients with high suspicion of DVT. (4) The therapy of stroke was recorded before the end of the study. Data of stoke patients with DVT was compared with those without DVT to identify the DVT risk factors. The effect of each variable on DVT was assessed by logistic regression analysis. RESULTS: The prevalence of DVT was 21.7% among the patients. In multivariate analysis, age >/= 65 years old (OR = 1.655, 95% CI: 1.005 - 2.725), being male (OR = 1.993, 95% CI: 1.221 - 3.253), bedridden (OR = 3.275, 95% CI: 1.653 - 6.486) and DVT assessment scores >/= 2 (OR = 5.019, 95% CI: 2.685 - 9.381) were independently associated with DVT in all the stroke patients. Being male (OR = 2.828, 95% CI: 1.242 - 6.438), white blood cell count > 10.0 x 10(9)/L (OR = 2.032, 95% CI: 0.897 - 4.602) and DVT assessment scores >/= 2 (OR = 8.809, 95% CI: 3.081 - 25.188) were the independent risk factors of DVT in hemorrhagic stroke group. Age >/= 65 years old (OR = 2.167, 95% CI: 1.072 - 4.381), bedridden (OR = 3.008, 95% CI: 1.435 - 6.307) and DVT assessment scores >/= 2 (OR = 2.600, 95% CI: 1.077 - 6.278) were the independent risk factors of DVT in ischemic stroke group. CONCLUSION: Patients hospitalized with acute stroke were under high risk of DVT. Data suggested that old age, female, bedridden and high DVT assessment scores >/= 2 were independent risk factors for DVT in acute stroke patients that called for supervision and prophylaxis on DVT.
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