Question

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 Select one: a. the oxygen increases the stimulation of the carotid and aortic bodies. b. the oxygen stimulates the respiratory center to increase the respiratory rate. c. his blood pH increased and stimulated an increase in his respiratory rate. d. even though he is receiving enough oxygen, carbon dioxide and hydrogen ions accumulate in his blood and cause the respiratory rate to continue to increase. e. oxygen cannot diffuse across the thickened membrane.

Answer 1

A patient has severe pneumonia, which has thickened the respiratory membrane. Despite oxygen therapy, he still has rapid breathing and feels he is not getting enough air. This is because your blood pH has increased and stimulated an increase in your respiratory rate.

• c. his blood pH increased and stimulated an increase in his respiratory rate.

How does respiratory rate affect pH?

When it is respiratory, it occurs due to an increase in the amount of volatile acids in the body, which lead to an increase in pCO2. When it is metabolic, it occurs due to the accumulation of non-volatile acids, which lead to the loss (excessive consumption) of bases, mainly bicarbonate, causing a drop in pH.

With this information, we can conclude that The respiratory system is the main controller of blood pH levels. The increase in the concentration of carbon dioxide in the blood causes an increase in H+ ions and, consequently, in acidity. Likewise, the decrease in carbon dioxide levels leads to an increase in blood alkalinity.

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