一种基于多患者质谱仪的系统，用于测量人工通气重症监护患者的代谢气体交换。

A multipatient mass spectrometer based system for the measurement of metabolic gas exchange in artificially ventilated intensive care patients.

作者信息

Roberts M J, Boustred M L, Hinds C J

出版信息

Intensive Care Med. 1983;9(6):339-43. doi: 10.1007/BF01692553.

Abstract

A commercially available multi-patient mass spectrometer based system [MPMS] has been evaluated for the measurement of metabolic gas exchange in artificially ventilated patients. The system automatically measures and displays oxygen uptake, (VO2) carbon dioxide output, (VCO2) respiratory quotient (RQ) expired minute volume, (Ve) and the percentage concentration of inspired gases. Measurements of VO2, VCO2, RQ and Ve, obtained using this system were compared with those determined by simultaneous Douglas bag collections. The measurement of carbon dioxide and oxygen concentrations was assessed separately by direct comparison with infra-red and paramagnetic analysis respectively. The MPMS measurements of metabolic gas exchange were found to have insignificant systematic errors with precisions of +/- 12 ml/min VO2, +/- 7 ml/min VCO2, +/- 0.03 RQ and +/- 0.1 l/min Ve; (2SD).

摘要

一种市售的基于多患者质谱仪的系统[MPMS]已被评估用于测量人工通气患者的代谢气体交换。该系统自动测量并显示氧气摄取量（VO2）、二氧化碳排出量（VCO2）、呼吸商（RQ）、呼出分钟通气量（Ve）以及吸入气体的百分比浓度。使用该系统获得的VO2、VCO2、RQ和Ve测量值与通过同时进行的道格拉斯袋收集法测定的值进行了比较。分别通过与红外分析和顺磁分析直接比较，对二氧化碳和氧气浓度的测量进行了评估。发现MPMS对代谢气体交换的测量具有不显著的系统误差，VO2的精度为±12 ml/分钟，VCO2为±7 ml/分钟，RQ为±0.03，Ve为±0.1 l/分钟；（2标准差）。