An older patient with gastroesophageal reflux disease (GERD) is prescribed ranitidine (Zantac). What should the nurse instruct as the mechanism of action of this medication?
1. Neutralizes stomach acid
2. Decreases acid production in the stomach
3. Creates a coating that acts as a protective barrier
4. Increases motility in the esophagus and stomach
2. Decreases acid production in the stomach
Explanation: 1. Antacids are medications that neutralize the stomach acid already produced.
2. Histamine blocker medications, such as ranitidine (Zantac), act by reducing acid production by blocking the histamine-2 receptor in the stomach.
3. Sucralfate (Carafate) is given to create a protective barrier on the mucous lining of the esophagus and stomach.
4. Medications that increase peristalsis include metoclopramide (Reglan).
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