During maximal aerobic exercise, exercise-induced arterial hypoxemia may result in elite endurance athletes due to which of the following? reduced venous return leads to decreased pulmonary capillary flow rate transit time through the pulmonary capillaries is much shorter oxygen diffusion capacity is no longer calculated using capillary mean PO2 lower venous O2 content increases the PO2 gradient
During maximal aerobic exercise, exercise-induced arterial hypoxemia may result in elite endurance athletes due to which of the following?
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reduced venous return leads to decreased pulmonary capillary flow rate |
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transit time through the pulmonary capillaries is much shorter |
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oxygen diffusion capacity is no longer calculated using capillary mean PO2 |
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lower venous O2 content increases the PO2 gradient |
Before proceeding with the question, we must know about exercise-induced arterial hypoxemia. It is the state in which there is low oxygen concentration in the arterial blood. Generally, during exercise, healthy individuals with no underlying medical condition are able to maintain arterial oxygenation whereas in athletes that are highly trained there is exercise-induced arterial hypoxemia that shows a kind of gas exchange abnormality. Also, the exercise-induced arterial hypoxemia in well-trained athletes is due to diffusion limitations and ventilation-perfusion inequality.
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