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The variables that a cardiopulmonary exercise test aims to measure can be presented in a number of different ways. The standard method of presenting these data is as a 9-panel plot. Different 9-panel plots are available; which arrange individual plots in different orientations.
CPET was initially used in the 1980s as a means of evaluating heart failure. In subsequent decades, its utility has been shown for a variety of indications across a wide variety of specialities.
We will cover what is CPET and why we perform these tests.Exercise physiology will be explored with focus on oxygen consumption, the concept of the anaerobic threshold, and the Fick principle.
Either the patient or the responsible clinician can stop a cardiopulmonary exercise test. In either case, whether a test has been taken to completion or has required early termination, it is important to understand and document the reasons.
An explanation of the indications for CPET, the scope of the book together with a glossary defining terms used throughout the book and a list of abbreviations.
CPET is a useful tool in the assessment of unexplained dyspnoea, and is increasingly being used to investigate the underlying cause. In order to better understand how CPET can be used in this manner, we will spend some time exploring dyspnoea.
In this chapter, we will cover indications and contraindications, complications, informed consent, patient preparation, lung function tests, test phases, and when to terminate a test.
This plot examines the link between alveolar minute ventilation and VCO2, which is usually tightly matched, and is an alternative means of viewing the relationship previously shown on the VEVCO2 versus time plot.
In this final part, we will examine how we assess exercise capacity and limitation through a series of example CPETs and we will delve deeper into how we investigate dyspnoea of unknown origin.