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Airflow and gas exchange (Terminology (Eupnoea = Normal breathing,…
Airflow and gas exchange
Terminology
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Hypoventilation will cause reduced PAO2 and increase PACO2.
Leads to reduced PaO2 (hypoxia) and increase PaCO2 (hypercapnia)
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Gas exchange
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In contact with water gas molecules dissolve
More will dissolve if the partial pressure of gas increases
Dynamic equilibrium = Number of a given gases molecules entering and leaving solution during given time is equal
As air humidified when inhaled will dilute the breath. So need to account for this for working out PO2 in alveoli
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