نتایج جستجو برای: fecul occult blood testing
تعداد نتایج: 1008103 فیلتر نتایج به سال:
background: colorectal cancer is one of the most common cancers and second leading cause of cancer deaths worldwide. every year nearly one million new cases of colorectal cancer are recognized around the world and nearly half of them lose their lives due to the disease. researches shown that in early diagnosis of this cancer 90% of patients can be treated. the fecal occult blood test (fobt) bec...
Abstract Background & aim: Occult hepatitis B virus infection in blood donors threats the safety of the blood supply. It is characterized by detection of low viral DNA in the serum subjects who have negative test for Hepatitis B surface antigen (HBsAg). The aim of this study was to assess the prevalence of occult hepatitis B virus infection among HBsAg negative and HBcAb positive in blood ...
Introduction: In recent years with introduction of better screening tests, the risk of infection with transfusion-transmitted viruses has been reduced remarkably, although obtaining a zero-risk blood supply still remains international blood transfusion services goal. The routine test for detection of HBV infected blood samples is examination of HBsAg with ELISA method but in occult HBV infectio...
BACKGROUND Colorectal cancer screening and treatment are rapidly evolving. Aims To reappraise stool-based colorectal cancer screening in light of changing test performance characteristics, lower test cost and increasing colorectal cancer care costs. METHODS Using a Markov model, we compared faecal DNA testing every 3 years, annual faecal occult blood testing or immunochemical testing, and col...
BACKGROUND AND AIMS To determine the cost-effectiveness of screening for colorectal cancer using flexible sigmoidoscopy once every 10 years, compared with annual and biennial rehydrated Hemoccult fecal occult blood testing and colonoscopy once every 10 years, or no screening. METHODS A Markov model was developed in order to simulate the progression of a cohort of asymptomatic, average-risk in...
BACKGROUND Fecal occult blood testing, flexible sigmoidoscopy, and colonoscopy are used to screen patients for colorectal cancer. OBJECTIVE To compare the cost-effectiveness of fecal occult blood testing, flexible sigmoidoscopy, and colonoscopy. DESIGN The cost-effectiveness of the three screening strategies was compared by using computer models of a Markov process. In the model, a hypothet...
Abstract Background and objectives: Hepatitis B virus infection is a major health problem in worldwide. The prevalence of Occult and chronic HBV in hemodialysis patients is higher than standard in developing countries. People with occult HBV are negative for HBV surface antigen (HBsAg) but positive for HBV-DNA. We aimed to evaluate occult hepatitis B infection in patients under hemodialysis in ...
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