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Articles by N Yamada
Total Records ( 2 ) for N Yamada
  N Yamada , S Ota , Ying Liu , C. M Chang , S Thaker , M Nakamura and M. Ito
 

Risk factors for pulmonary embolism (PE) have been identified among populations in Western countries but have not been well characterized in Japan. A hospital-based case-control design employed cases with PE, which diagnosed by standard imaging techniques; controls were individuals drawn by systematic random sampling from the hospital admission register. A total of 100 (38 males and 62 females) and 199 controls were identified. Patients with PE were younger (56.5 vs 60.9 years) and more likely to be female. The odds ratio ([OR] adjusted for other factors) and 95% confidence interval (CI) for risk of PE was elevated for the following: female gender, prolonged immobilization, history of prior venous thromboembolism (VTE), lower extremity varicose veins, body mass index (BMI) ≥ 25 kg/m 2, extremity paralysis, and gout/hyperuricemia. Inherited thrombophilia was found in 14 patients with PE (14%). Risk factors for PE in Japan are comparable in magnitude to those in Western countries; only one third of PE cases had received VTE prophylaxis.

  H Nomura , H Wada , T Mizuno , Y Yamashita , K Saito , S Kitano , N Katayama , N Yamada , T Sugiyama , A Sudo , M Usui , S Isaji and T. Nobori
 

Background: Most patients with malignant diseases are frequently complicated with some type of thrombosis, such as disseminated intravascular coagulation (DIC) or deep vein thrombosis (DVT)/pulmonary embolism (PE). Objective: The cohort and retrospective study was designed to examine the frequency of thrombosis in patients with malignant diseases and to evaluate the efficacy of D-dimer and soluble fibrin (SF) for the diagnosis of thrombosis. Patients/Methods: The plasma concentrations of D-dimer and SF were measured in patients with malignant diseases suspected of having thrombosis. D-dimer and SF were measured using a latex aggregation assay. Results: Thrombosis was observed in 23.3% of the patients with malignant diseases. Disseminated intravascular coagulation was frequently observed in patients with hepatoma, and DVT/PE was frequently observed in patients with colon cancer, lung cancer, and uterine cancer. The plasma levels of D-dimer and SF were increased in malignant diseases, especially hepatoma. Plasma levels of D-dimer and SF were significantly higher in patients with thrombosis in comparison to patients without thrombosis. A receiver operating characteristic (ROC) analysis showed the D-dimer and SF levels to be useful in the diagnosis of thrombosis. Conclusion: Elevated D-dimer and SF levels might indicate a high risk of thrombosis in patients with malignant disease; however, these assays still need to be standardized.

 
 
 
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