28 | Chapter 1 Figure 5. Overview of a laryngectomized patient with a voiceprosthesis and HME. This image has been used with permission from Atos Medical AB. Throughout the test, various physiological parameters are continuously monitored. These include heart rate, oxygen consumption (VO2), carbon dioxide production (VCO2), minute ventilation (VE), respiratory exchange ratio (RER) and electrocardiography (ECG). A key aspect of maximal CPET is the utilization of a face mask or mouthpiece connected to a metabolic cart, which allows for the collection of expired gases. This equipment enables the accurate measurement of respiratory parameters, providing insights into the efficiency of gas exchange during exercise80.
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