A patient is placed on drug therapy with omeprazole (Prilosec). Which statement most accurately describes the therapeutic effect of the drug?
a. It inhibits the conversion of pepsinogen to pepsin.
b. It inhibits the action of histamine at the histamine2 (H2) receptors.
c. It affects the proton pump system to block hydrogen secretion from parietal cells.
d. It increases the strength of esophageal peristalsis and lowers esophageal sphincter pressure.
ANS: C
Omeprazole is a proton pump inhibitor, and suppresses gastric acid secretion by irreversibly binding with the proton pump system that controls hydrogen secretion from the parietal cell into the secretory canals.
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Fill in the blank(s) with correct word
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