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试题1 答案:E【题解】急性甲型肝炎病人于潜伏期末和急性期早期可随粪便排出 HAV,用固相放射免疫试验检测,于发病一周内收集的粪便标本仅45%HAV 阳性;于发病第二周,仅12%粪便标本可检测到 HAV。粪便HAV 阳性可确诊为急性甲型肝炎,但阴性者不能否定诊断。急性甲型肝炎病人肝组织中可检测到 HAV,但本法技术较复杂,且不易被病人所接受。虽然急性甲型肝炎病人粪便抗-HAV lgA 可以阳性,但检出率较低,仪18.5%阳性。有人曾提出:检测急性期和恢复期双份血清,如抗-HAV 滴度升高4倍以上者,则可诊断为急性甲型肝炎。但是,肝炎病人一般
Question 1 Answer: E [Problem] acute hepatitis A patients with excretion of HAV at the end of the incubation period and early acute phase with solid phase radioimmunoassay, stool specimens collected within only one week incidence of only 45% HAV positive; in the incidence In the second week, only 12% of stool specimens detected HAV. Stool HAV positive can be diagnosed as acute hepatitis A, but negative can not deny diagnosis. HAV can be detected in liver tissue of patients with acute hepatitis A, but the technique of this method is complicated and difficult to be accepted by patients. Although fecal anti-HAV lgA was positive in patients with acute hepatitis A, the detection rate was low, with 18.5% positive. It has been proposed: the detection of acute and convalescent serum double, such as anti-HAV titers increased more than 4 times, you can diagnose acute hepatitis. However, hepatitis patients in general