Ventilatory response to exercise Flashcards Preview

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Flashcards in Ventilatory response to exercise Deck (9)
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1

impact of exercise on alveolar O2 and CO2

minimal (indicaating that alveolar ventilation increased in proportion to metabolic rate)

2

impact of lung elastcity at high volumes

less elastic at high volumes - increases in ventilation mostly through respiratory rate at this point (vs tidal volume)

3

ventilatory increase at low workloads primarily via

tidal volume

4

ration decreased as tidal volume increases at low work loads

decreased dead space / tidal volume

5

humans retain arterial blood gas homeostasis up until

60% of max metabolic wait

6

aboe 60% maximal capacity, increased ___

lactic acid production 

7

impact of hyperventilation at high work rates

no change in PaO2 (no increase)

8

increase in alveolar to capillary gas exhange indicated by

increase in DLCO

9

increase in ___-___ difference at high workloads reflects hyperventilation increases ___ which increases ____ to ____ driving pressure and maintains normal PaO2

increase in A-a POdifference at high workloads reflects hyperventilation increases PAO2 which increases alveolar to capillary driving pressure and maintains normal PaO2