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由呼出气温度检测心输出量的测量系统(PDF)

《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

期数:
2001年第6期
页码:
467-469，472
栏目:
论著
出版日期:
2001-11-01

文章信息/Info

Title:
Anestimation system of cardiac output measurement from expired gas temperature
作者:
贾　斌1;  温光楠1;  李志超1;  李建军2;  张洪伟3;  徐世序4
第四军医大学: 1. 基础部病理生理学教研室, 3. 西京医院普通外科,4. 医学电子工程系计算机教研室, 陕西西安710033; 2. 北京生物医学工程研究所
Author(s):
JIA Bin1;  WEN Guang-nan1;  LI Zhi-chao1;  LI Jian-jun2;  ZHANG Hong-wei3;  XU Shi-xu4
1.Department of Pathophysiology, Faculty of Preclinical Medicine, 3.Department of General Surgery, Xijing Hospital, 4.Department of Biomedical Engineering, Fourth Military Medical University, Xi’an Shaanxi 710033; 2.Institute of Biomedical Engineering, Be
关键词:
热稀释法;  心输出量;  呼出气温度;  测量
Keywords:
thermoldilution;  cardiac output;  expired gas temperature;  measurement
分类号:
Q61
DOI:
-
文献标识码:
A
摘要:
目的 探索并建立一种新的无创伤的心输出量实验检测系统。方法 根据热稀释法呼出气温度意义的研究理论, 利用微型计算机采集热稀释法呼出气温度曲线、肺动脉热稀释曲线、主动脉热稀释曲线数据, 采样频率20Hz, 并对采集的3 组数据分别进行自动处理, 得到由呼出气温度曲线获得的心输出量(CO )。结果 从呼出气温度曲线获得的CO 与从肺动脉热稀释曲线、主动脉热稀释曲线获得的CO 相比具有很好的相关性。结论 经过犬的动物实验证明, 这一系统具有成本低、性能稳定可靠、结果迅速准确、可重复性好等优点。
Abstract:
AIM To investigate and develop a new noninvasive measurement method of cardiac output (CO). METHODS The microcomputer measurement system of CO was set up according to the theory of thermodilution expired gas temperature. Expired gas temperature-time curve(EGTC) was collected by microcomputer through A/D converter; at the same time, pulmonary artery temperature-time curve (PATC) and ascending aorta temperature-time curve (AATC)were collected also, fitting at a frequency of 20 Hz. Comparing with the CO values of measured from pulmonary artery and ascending aorta respectively, the CO measured from expired gas temperature was acquired in the same system. RESULTS The CO measured from expired gas temperature was well relation to that was measured from pulmonary artery and ascending aorta respectively. CONCLUSION The measurement of CO from expired gas temperature is a feasible non invasive method and the measurement system is a reliable, accurate and low -cost system.

参考文献/References

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备注/Memo

备注/Memo:
收稿日期：2000-08-10.
更新日期/Last Update: 2001-11-01