Antacid Quiz: Can You Soothe The Stomach Safely?

1. H2 blockers reduce acid production by what percentage compared to baseline?

25-30%

50-70%

80-90%

95-100%

2. Ranitidine should be administered how many minutes before meals for optimal effectiveness?

15-30 minutes

30-60 minutes

60-90 minutes

90-120 minutes

3. H2 blockers are primarily used for treatment of which condition?

Peptic ulcer disease and GERD

Acute gastroenteritis

Inflammatory bowel disease

Gastric cancer prevention

4. Which condition is a contraindication for aluminum hydroxide antacid use?

Osteoporosis

Hypomagnesemia

Hypercalcemia

Hypophosphatemia

5. A patient taking H2 blockers reports persistent diarrhea. Which component is likely responsible?

The active H2 blocker agent

Magnesium-containing excipients

Lactose in the formulation

Histamine depletion

6. Antacids are most effective when taken at what time relative to meals?

30 minutes before meals

1-3 hours after meals

With meals

First thing in the morning

7. Which H2 blocker requires dose adjustment in patients with severe renal disease?

Famotidine

Ranitidine

Both A and B

Neither A nor B

8. Calcium carbonate antacids should be separated from other medications by how many hours?

1 hour

2 hours

4 hours

6 hours

9. Long-term use of H2 blockers may impair absorption of which vitamin?

Vitamin A

Vitamin B12

Vitamin C

Vitamin D

10. Which antacid is contraindicated in patients with heart failure due to sodium content?

Calcium carbonate

Sodium bicarbonate

Magnesium hydroxide

Aluminum hydroxide

11. Which medication class reduces gastric acid by blocking histamine-2 receptors on parietal cells?

H2 Blockers

Proton pump inhibitors

Antacids

Anticholinergics

12. A patient on cimetidine reports gynecomastia. Which action should the nurse take?

Reassure the patient it will resolve after discontinuation

Increase the medication dose

Suggest switching to famotidine

Recommend topical hormone treatment

13. Which medication interaction occurs when antacids are taken with tetracycline antibiotics?

Increased antibiotic absorption

Decreased antibiotic absorption

Enhanced gastric protection

Reduced antacid effectiveness

14. Magnesium-based antacids can cause which GI side effect with chronic use?

Constipation

Diarrhea

Gastric distention

Increased acid secretion

15. When should a patient take H2 blockers for optimal acid suppression during the day?

With meals

On an empty stomach

At bedtime for nocturnal protection

Immediately after meals

16. Antacids containing aluminum should be used cautiously in patients with which condition?

Hypertension

Renal impairment

Diabetes

Hyperthyroidism

17. Which H2 blocker is most likely to cause CNS side effects in elderly patients?

Famotidine

Cimetidine

Ranitidine

Nizatidine

18. A patient reports black tarry stools after taking bismuth subsalicylate. What is the nurse's best response?

This is a normal side effect and requires no intervention

Discontinue the medication immediately

Advise the patient this is expected and not harmful

Report to the physician as this indicates GI bleeding

19. Antacids work by which mechanism to relieve heartburn?

Blocking acid secretion

Neutralizing existing stomach acid

Reducing gastric motility

Inhibiting pepsin production

20. Famotidine and ranitidine are examples of which drug class?