Oxygen saturation
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This chapter describes how desaturation during a cardiopulmonary exercise test (CPET) is uncommon. A fall of more than 4% from resting values is considered abnormal. Oxygen desaturation is usually caused by lung or pulmonary vascular disease, reflecting ventilation–perfusion inequality or impaired diffusion. Occasionally, a right-to-left shunt will open up in the heart during exercise. Some elite athletes show exercise-induced arterial hypoxaemia, when the ability of their muscles to utilize oxygen cannot be met by the subject’s ventilatory capacity.
2003 ◽
Vol 2
(1)
◽
pp. 107
2006 ◽
Vol 5
(1)
◽
pp. 107-107
2008 ◽
Vol 7
◽
pp. 73-74
2021 ◽
Vol 40
(4)
◽
pp. S213
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