Question

During metabolic alkalosis, which physiological changes are found present when re-establishing normal plasma pH level, starting with the fastest change? Choose the best answer:

(a) Decrease ventilation, decrease H⁺ excretion

(b) Increase ventilation, decrease H⁺ excretion

(c) Decrease ventilation, decrease H⁺ reabsorption

(d) Increase ventilation, decrease H⁺ reabsorption

(e) Increase H⁺ reabsorption, decrease ventilation

Answer 1

Answer should be A) decrease ventilation, decreases H+ excretion.

Metabolic alkalosis is a condition in which pH is increased due to loss of ions from body due to vomiting or any other losses.

It results into electrolyte disturbances.

Compensatory mechanism for metabolic alkalosis is hypoventilation, it is respiratory compensation in which all the CO2 which is present in lungs forms carbonic acid with hydrogen ions.

Other compensatory mechanism is renal compensation in which bicarbonate ion reabsorption is decreased or it's excretion is increased and hence pH is reduced.