一种紧凑型代谢测量仪器的体外评估

In vitro evaluation of a compact metabolic measurement instrument.

作者信息

Weissman C, Sardar A, Kemper M

机构信息

Department of Anesthesiology, College of Physicians & Surgeons, Columbia University, New York, New York 10032.

出版信息

JPEN J Parenter Enteral Nutr. 1990 Mar-Apr;14(2):216-21. doi: 10.1177/0148607190014002216.

DOI:10.1177/0148607190014002216

PMID:2112632

Abstract

The ability of the Datex Deltatrac (Sensor-Medics, Anaheim, CA) to accurately measure oxygen consumption (VO2v) and carbon dioxide production (VCO2) was examined in vitro using the carbon dioxide addition and nitrogen dilution methods. The accuracy of respiratory quotient (RQ = VCO2/VO2) measurements was assessed using methanol combustion (RQ = 0.67). Both in the canopy (blow-by) and respirator (FiO2: 0.21-0.6, PEEP: 0-12 cm H2O) modes the Deltatrac's measurements of VO2 and VCO2 were within +/- 7% of values predicted from CO2 and N2 simulations. Similar results were obtained with methanol combustion. In vitro testing revealed that the Deltatrac accurately measures VO2 and VCO2 under a variety of simulated clinical conditions.

摘要

使用二氧化碳添加法和氮气稀释法在体外检测了Datex Deltatrac（Sensor-Medics公司，加利福尼亚州阿纳海姆）精确测量氧耗量（VO2v）和二氧化碳生成量（VCO2）的能力。使用甲醇燃烧（呼吸商RQ = 0.67）评估呼吸商（RQ = VCO2/VO2）测量的准确性。在罩式（漏气）和呼吸机模式（吸入氧分数FiO2：0.21 - 0.6，呼气末正压PEEP：0 - 12 cm H2O）下，Deltatrac对VO2和VCO2的测量值均在根据二氧化碳和氮气模拟预测值的±7%范围内。甲醇燃烧实验也得到了类似结果。体外测试表明，Deltatrac在各种模拟临床条件下都能准确测量VO2和VCO2。