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Cardiopulmonary exercise testing in the assessment of exertional dyspnea.

Datta D, Normandin E, ZuWallack R - Ann Thorac Med (2015 Apr-Jun)

Bottom Line: It is usually investigated by resting tests such as pulmonary function tests and echocardiogram, which may at times can be non-diagnostic.Cardiopulmonary exercise testing (CPET) measures physiologic parameters during exercise which can enable accurate identification of the cause of dyspnea.Though CPET has been around for decades and provides valuable and pertinent physiologic information on the integrated cardiopulmonary responses to exercise, it remains underutilized.

View Article: PubMed Central - PubMed

Affiliation: Department of Medicine, Division of Pulmonary-Critical Care Medicine, University of CT Health Center, Farmington, CT 06030, USA.

ABSTRACT
Dyspnea on exertion is a commonly encountered problem in clinical practice. It is usually investigated by resting tests such as pulmonary function tests and echocardiogram, which may at times can be non-diagnostic. Cardiopulmonary exercise testing (CPET) measures physiologic parameters during exercise which can enable accurate identification of the cause of dyspnea. Though CPET has been around for decades and provides valuable and pertinent physiologic information on the integrated cardiopulmonary responses to exercise, it remains underutilized. The objective of this review is to provide a comprehensible overview of the underlying principles of exercise physiology, indications and contraindications of CPET, methodology and interpretative strategies involved and thereby increase the understanding of the insights that can be gained from the use of CPET.

No MeSH data available.


Related in: MedlinePlus

Physiologic response to exercise
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Figure 1: Physiologic response to exercise

Mentions: A working knowledge of exercise physiology is essential to understand the various aspects of CPET. This is schematically illustrated in Figure 1. During exercise, to provide the energy required by the muscles, oxygen (O2) is inhaled into the lungs, transported by the pulmonary vessels to the heart and delivered to the muscles by the arterial circulatory system. QO2 is the O2 utilized by the muscles and QCO2 is the carbon dioxide (CO2) produced by muscles with exercise which is then transported by the venous system to the heart and lungs and then exhaled. Analysis of the measured inspired and expired gases during exercise enables quantification of the oxygen consumed or oxygen uptake (VO2) and the CO2 generated (VCO2). In steady state, QO2 = VO2 and QCO2 = VCO2.


Cardiopulmonary exercise testing in the assessment of exertional dyspnea.

Datta D, Normandin E, ZuWallack R - Ann Thorac Med (2015 Apr-Jun)

Physiologic response to exercise
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4375746&req=5

Figure 1: Physiologic response to exercise
Mentions: A working knowledge of exercise physiology is essential to understand the various aspects of CPET. This is schematically illustrated in Figure 1. During exercise, to provide the energy required by the muscles, oxygen (O2) is inhaled into the lungs, transported by the pulmonary vessels to the heart and delivered to the muscles by the arterial circulatory system. QO2 is the O2 utilized by the muscles and QCO2 is the carbon dioxide (CO2) produced by muscles with exercise which is then transported by the venous system to the heart and lungs and then exhaled. Analysis of the measured inspired and expired gases during exercise enables quantification of the oxygen consumed or oxygen uptake (VO2) and the CO2 generated (VCO2). In steady state, QO2 = VO2 and QCO2 = VCO2.

Bottom Line: It is usually investigated by resting tests such as pulmonary function tests and echocardiogram, which may at times can be non-diagnostic.Cardiopulmonary exercise testing (CPET) measures physiologic parameters during exercise which can enable accurate identification of the cause of dyspnea.Though CPET has been around for decades and provides valuable and pertinent physiologic information on the integrated cardiopulmonary responses to exercise, it remains underutilized.

View Article: PubMed Central - PubMed

Affiliation: Department of Medicine, Division of Pulmonary-Critical Care Medicine, University of CT Health Center, Farmington, CT 06030, USA.

ABSTRACT
Dyspnea on exertion is a commonly encountered problem in clinical practice. It is usually investigated by resting tests such as pulmonary function tests and echocardiogram, which may at times can be non-diagnostic. Cardiopulmonary exercise testing (CPET) measures physiologic parameters during exercise which can enable accurate identification of the cause of dyspnea. Though CPET has been around for decades and provides valuable and pertinent physiologic information on the integrated cardiopulmonary responses to exercise, it remains underutilized. The objective of this review is to provide a comprehensible overview of the underlying principles of exercise physiology, indications and contraindications of CPET, methodology and interpretative strategies involved and thereby increase the understanding of the insights that can be gained from the use of CPET.

No MeSH data available.


Related in: MedlinePlus