McHenry R, Bartlett M S, Lehman G A, O'Connor K W
Department of Medicine, University School of Medicine, Indianapolis, Indiana.
Gastrointest Endosc. 1987 Dec;33(6):425-6. doi: 10.1016/s0016-5107(87)71679-4.
Giardia lamblia, the most common intestinal parasite in the United States, may present with nonspecific gastrointestinal symptoms when the infection is chronic. In order to determine how frequently the parasite could be detected in patients undergoing endoscopy for standard indications, duodenal aspirates were collected from 144 patients. Despite G. lamblia being endemic in the state (and therefore readily recognized in our laboratory), there was only one positive aspirate in the 144 specimens collected (0.7%) at this midwestern, tertiary care facility servicing a primarily middle class population. In the population sampled, routine duodenal aspiration for G. lamblia in patients not clinically suspected of having this parasitic infection is of very low yield.
蓝氏贾第鞭毛虫是美国最常见的肠道寄生虫，慢性感染时可能出现非特异性胃肠道症状。为了确定在因标准指征接受内镜检查的患者中该寄生虫的检出频率，我们从144例患者中收集了十二指肠抽吸物。尽管蓝氏贾第鞭毛虫在该州为地方病（因此在我们实验室很容易识别），但在这家主要服务于中产阶级人群的中西部三级医疗中心收集的144份标本中，只有1份抽吸物呈阳性（0.7%）。在抽样人群中，对未临床怀疑有这种寄生虫感染的患者进行常规十二指肠抽吸以检测蓝氏贾第鞭毛虫的检出率非常低。
