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医疗服务操作分类与编码是医学信息标准化的重要组成部分,是临床数据提取、分析和应用的基础。世界卫生组织及世界多国一直致力于开发、更新和维护此分类与编码。我国此前一直沿袭美国准备在2014年停止使用的ICD-9-CM-3(卷3),中国需要结合国际主流设计思路,根据国情开发出适宜的多轴、一体化的医疗服务操作分类与编码体系。 相似文献
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Adenocarcinoma of the stomach and esophagus and drinking water and dietary sources of nitrate and nitrite 总被引:1,自引:0,他引:1
Ward MH Heineman EF Markin RS Weisenburger DD 《International journal of occupational and environmental health》2008,14(3):193-197
We conducted a population-based case-control study of adenocarcinoma of the stomach and esophagus in Nebraska, U.S.A. Nitrate concentrations in public drinking water supplies were linked to residential water source histories. Among those using private wells at the time of the interview, we measured nitrate levels in water samples from wells. Dietary nitrate and nitrite were estimated from a food-frequency questionnaire. Among those who primarily used public water supplies (79 distal stomach, 84 esophagus, 321 controls), average nitrate levels were not associated with risk (highest versus lowest quartile: stomach OR=1.2, 95% CI [0.5-2.7]; esophagus OR=1.3, 95% CI [0.6-3.1]). We observed the highest ORs for distal stomach cancer among those with higher water nitrate ingestion and higher intake of processed meat compared with low intakes of both; however, the test for positive interaction was not significant (p=0.213). We did not observe this pattern for esophagus cancer. Increasing intake of nitrate and nitrite from animal sources was associated with elevated ORs for stomach cancer and with a significant positive trend in risk of esophagus cancer (P-trend=0.325 and 0.015, respectively). Larger studies with higher exposures to drinking water sources of nitrate are warranted to further evaluate N-nitroso compound precursors as risk factors for these cancers. 相似文献
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Ward MH Heineman EF McComb RD Weisenburger DD 《Journal of occupational and environmental medicine / American College of Occupational and Environmental Medicine》2005,47(12):1260-1267
OBJECTIVE: Dietary nitrite has been associated with increased glioma risk; however, drinking water nitrate has not been extensively evaluated. METHODS: We conducted a population-based case-control study of adult glioma in Nebraska. Water utility nitrate measurements were linked to residential water source histories. We computed average nitrate exposure over a 20-year period. A food frequency questionnaire was used to assess dietary nitrate and nitrite. RESULTS: Increasing quartiles of the average nitrate level in drinking water were not significantly associated with risk (adjusted odd ratios: 1.4, 1.2, 1.3). Risk was similar among those with both higher and lower intakes of vitamin C, an inhibitor of N-nitroso compound formation. Dietary nitrite intake was not associated with risk. CONCLUSIONS: Our study does not support a role for drinking water and dietary sources of nitrate and nitrite in risk of adult glioma. 相似文献
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主要就引起卵巢黄体功能不健的因素 ,分别从激素调节、细胞因子 (VEGF、TNF α、BFGF、IFN γ、IGF)、C myc、Fas、SGP 2基因调控以及细胞连接、细胞粘附分子、NO等对卵巢功能的调节及对黄体细胞的凋亡影响进行阐述 ,认为卵泡发育不良、颗粒细胞、黄体细胞的凋亡与黄体功能不足有密切的关系。且多种细胞因子、基因表达产物参与此过程的调控。深入的研究这一调控机制 ,对于进一步了解卵巢卵泡生长发育、卵泡闭锁及黄体细胞凋亡的内在机制有重要意义 相似文献
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李宁忱 《中国医师进修杂志》2007,30(32):1-3
一、膀胱癌的分级与分期
1.膀胱癌的组织学类型:尿路被覆的上皮统称为尿路上皮(urothelium).传统上将尿路上皮称为移行上皮(transitional epithelium).目前在文献和习惯上这两个名词常常被交替使用.膀胱癌的组织学类型包括尿路上皮癌、鳞状细胞癌和腺癌,其次还有较少见的转移性癌、小细胞癌和癌肉瘤等. 相似文献
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The absorption and excretion in vivo of cholecalciferol or 25-hydroxycholecalciferol (25-HCC) were determined in chicks (Gallus domesticus) and turkeys (Meleagris gallopavo). The overall net cholecalciferol or 25-HCC absorption in chicks and cholecalciferol in turkey poults was 66.5 +/- 3.3, 74.9 +/- 3.7 and 83.6 +/- 7.1% of the intake, respectively. The absorption of cholecalciferol or 25-HCC in chicks and turkeys occurred at the upper part of the intestine. 25-HCC, esters and non-polar metabolites of cholecalciferol or 25-HCC, and their polar metabolites, were secreted in the duodenum of chicks and turkeys but were partially reabsorbed at the upper part of the jejunum. 相似文献
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结核病的"复燃"及其防治对策 总被引:2,自引:1,他引:2
刘敬东 《国际流行病学传染病学杂志》2004,31(6):321-324
1 .国内外结核病疫情现状结核病在 2 0世纪 6 0年代曾被宣称“作为一个公共卫生问题将于 2 0 0 0年被消灭”[1] 。此后 ,由于各国对结核病控制工作的忽视、人口流动的增加、耐药结核病的增多以及结核病与艾滋病合并感染等原因 ,结核病在全球死灰复燃 ,严重危害了人类的健康 ,不仅成为严重的公共卫生问题 ,也是影响各国发展的重大的社会和经济问题。 1993年世界卫生组织(WHO)宣布“结核病全球紧急状态” ,全球每年约有2 0 0万人死于结核病 ,2 0 2 0年死亡总数估计将达到35 0 0万[2~ 3] 。我国是世界上 2 2个结核病高负担国家之一 ,结核病… 相似文献