A patient has severe pneumonia, which has thickened the respiratory membrane. Despite oxygen therapy, he still has rapid respiration and feels as if he is not getting enough air. This is because

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The correct answer is D because when the respiratory membrane is thickened due to severe pneumonia, it hampers the efficient exchange of gases. Even with supplemental oxygen (O2), carbon dioxide (CO2) and hydrogen ions (H+) can accumulate in the blood, leading to respiratory acidosis. This condition stimulates the respiratory center to increase the rate of respiration in an attempt to expel more CO2 and correct the acidosis, explaining the patient's rapid respiration and sensation of not getting enough air.

A Patient Has Severe Pneumonia, Which Has Thickened the Respiratory