A 67-year-old man presents to his physician accompanied by his wife. She states that recently her husband has been confused and has suffered multiple falls in the past few days. The patient has a history of hypertension, hyperlipidemia, and gastroesophageal reflux disease. He was prescribed a medication for heartburn symptoms several months ago.
Based on the presenting symptoms, which of the following is the mechanism of action of the medication most likely prescribed to this patient?
- A) Antagonism at 5-HT3 receptors
- B) Increased production and secretion of gastric mucous barrier
- C) Irreversible inhibition of H+/K+ ATPase in stomach parietal cells
- D) Neutralization of stomach pH
- E) Reversible inhibition of H2 receptors in stomach parietal cells