Question

A patient is admitted to your hospital clinic with a reduced respiratory rate and tidal volume (breath size). You order an “arterial blood gas”, a test where arterial blood is drawn and the levels of oxygen, CO₂, bicarbonate, as well as the pH are measured. The results come back and reveal that the patient’s blood pH is not as low as expected given her arterial pCO₂ values. Of what might this be an indication? (select two answers)

decreased excretion of protons in the urine by the kidney

increased reabsorption of bicarbonate in the kidney

prolonged duration of the respiratory acidosis

respiratory alkalosis

metabolic acidosis

Answer 1

Answers:

The two answers: 1) Decreased excretion of protons in the urine by the kidney

4) Respiratory alkalosis

Decreased excretion of protons in the urine by the kidney:

In chronic respiratory alkalosis, the kidneys decrease H+ secretion, which produces a decrease in the serum HCO3− concentration. Metabolic compensation for respiratory alkalosis develops gradually and takes 2-3 days.

Respiratory alkalosis:

Respiratory alkalosis is a medical condition in which increased respiration elevates the blood pH beyond the normal range (7.35–7.45) with a concurrent reduction in arterial levels of carbon dioxide. This condition is one of the four basic categories of disruption of acid-base homeostasis.

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