血管外肺水微机测量系统的可靠性评价  

Evaluation to Reliability of Microcomputer MeasurementSystem for Extravascular Lung Water

作　　者：闫天生[1] 温光楠[2] 贾斌[2] 徐世序[3] 

机构地区：[1]首都医科大学北京同仁医院胸心外科 [2]第四军医大学病理生理室 [3]第四军医大学计算机室

出　　处：《北京生物医学工程》1999年第3期169-172,共4页Beijing Biomedical Engineering

摘　　要：目的对热－染料双指示剂稀释法和血管外肺水微机测量系统（ＥＶＬＷ）检测的血管外肺热容量（ＥＴＶ）进行可靠性验证和评价。方法３４只犬分为正常对照组与肺水肿实验组。将ＥＴＶ与排除肺残余血量测得的血管外肺组织（ＥＬＭ）和血管外肺水（ＥＬＷ）比较。结果ＥＴＶ与ＥＬＷ相关系数ｒ＝０．９５０９，ＥＴＶ与ＥＬＭ相关系数ｒ＝０．９５４６，ＥＴＶ重复测量值之间ｒ＝０．９０４０，变异系数ＣＶ＝５．６８％，对照组ＥＴＶ最后／ＥＬＭ为１．００９４±０．０３３，实验组为０．９４０１±０．０９１。结论本系统能较准确、特异地对血管外肺水做定量分析，重复性好，可实时动态观察肺水的变化，从而早期诊断肺水肿。ＥＴＶ对正常肺水略高估，而在严重肺水肿时略低估。Object: To evaluate and verify the reliability of ETV(extravascular thermal volume), measured by microcoputer system for ELW(extravascular lung water),and using thermaldye doubleindicator dilution method. Method: 34 dogs were divided into control group and lung edema test group. ETV was compared both with ELM(extravascular lung mass) excluded residual blood volume in lungs and ELW. Results: The correlated coefficient between ETV and ELW was 09509;between ETV and ELM was 09546; and between the values for ETV tested repeatedly was found to be 09404. The coefficient of variance(CV) showed 568%. The value for ratio between ETVlast and ELM was equal to 100940033 in control group and 094010091 in lung edema group. Conclusion: The changes of ELW can be analysed quantitatively and the repeatability is good. The real time dynamic change can be observed with this system. Thus a pulmonary edema might be diagnosed early. Even though, ETV is slighly higher than the real value of lung water in normal condi

关 键 词：肺水肿 微机 双指示剂稀释方法 

分 类 号：R541.63[医药卫生—心血管疾病]