Question

Metabolic alkalosis can be caused by all of the following except

• A. Hyperaldosteronism
• B. Hyperventilation
• C. Hypokalaemia
• D. Vomiting

Answer 1

The correct option is B Hyperventilation

Hyperventilation refers to the condition of heavy breathing resulting in the lack of carbon dioxide in the body. Metabolic alkalosis occurs when the pH of the tissues is increased beyond the normal range of 7.35-7.45. Hyperventilation has no effect on the metabolic alkalosis.

A. Hyperaldosteronism can cause excessive loss of H${}^{+}$ ions resulting in metabolic alkalosis.

B. Hyperventilation has no effect on the metabolic alkalosis.

C. Hypokalemia is the deficiency of potassium ions, resulting in metabolic alkalosis.

D. Vomiting causes dehydration and imbalance of ions in the body.

Hence, the correct answer is 'Hyperventilation'.