If a person inhales a peanut that lodges in a peripheral airway, what changes wo

Question

If a person inhales a peanut that lodges in a peripheral airway, what changes would you expect for the following variables in the peanut occluded unit? A) PACO2? B) PAO2? C) Pulmonary end capillary pH? D) Blood flow in that lung unit? Explain your answer

Explanation / Answer

PAO2 m In case of a pulmonary embolus there is a decrease in alveolar blood flow => there is an increase in V/Q ratio => In a way the lungs are hyperventilating for that particular segment( i e there is more ventilation per unit pressure)=> when we have that plasma pO2 goes up plasma pCO2 goes down ie CO2 wash out Hence there is an increase in end capillary pH.

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