Accuracy and precision of CPET equipment: A comparison of breath-by-breath and mixing chamber systems

被引：27

作者：

Beijst, Casper ^{[1
]}

Schep, Goof ^{[2
]}

Breda, Eric Van ^{[2
,3
]}

Wijn, Pieter F. F. ^{[4
,5
]}

Pul, Carola Van ^{[4
]}

机构：

[1] Eindhoven University of Technology, Department of Applied Physics, 5612AZ Eindhoven

[2] Maxima Medical Centre, Department of Sports Medicine, 5500 MBVeldhoven

[3] Maastricht University, Departement of Movement Sciences, 6229 ER, Maastricht

[4] Maxima Medical Centre, Department of Clinical Physics and Clinical Informatics, 5500 MB Veldhoven

[5] Eindhoven University of Technology, School of Medical Physics and Engineering Eindhoven, N-laag, 5612 AZ Eindhoven

来源：

Journal of Medical Engineering and Technology | 2013年 / 37卷 / 01期

关键词：

Breath-by-breath; Cardiopulmonary exercise testing; Error analysis; Metabolic simulator; Mixing chamber;

D O I：

10.3109/03091902.2012.733057

中图分类号：

学科分类号：

摘要：

Cardiopulmonary exercise testing (CPET) has become an important diagnostic tool for patients with cardiorespiratory disease and can monitor athletic performance measuring maximal oxygen uptake Vo2;max. The aim of this study is to compare the accuracy and precision of a breath-by-breath and a mixing chamber CPET system, using two methods. First, this study developed a (theoretical) error analysis based on general error propagation theory. Second, calibration measurements using a metabolic simulator were performed. Error analysis shows that the error in oxygen uptake (Vo2) and carbon dioxide production (Vco2) is smaller for mixing chamber than for breath-by-breath systems. In general, the error of the flow sensor δV, the error in temperature of expired air δTB and the delay time error δtdelay are significant sources of error. Measurements using a metabolic simulator show that breath-by-breath systems are less stabile for different values of minute ventilation than mixing chamber systems. © 2013 Informa UK, Ltd.

引用

页码：35 / 42

页数：7

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