A patient with PUD is prescribed a combination therapy of amoxicillin, clarithromycin, and a PPI. The nurse understands that this regimen is intended to:

Correct Answer: C

Rationale: This triple therapy eradicates H. pylori and reduces acid to heal ulcers.

Correct Answer: B

Rationale: Endoscopy with biopsy is the gold standard for diagnosing gastritis as it allows direct visualization of the stomach lining and histological confirmation of inflammation or H. pylori infection. Barium swallow is less specific and used more for structural abnormalities. Abdominal ultrasound assesses organs like the liver or gallbladder, not gastritis. Stool culture is irrelevant unless checking for H. pylori antigen, but it's not the primary method.

Correct Answer: B

Rationale: Both co-codamol and co-proxamol contain paracetamol which may be hepatotoxic. Cophenotrope has the constipating opioid diphenoxylate, but includes atropine whose unpleasant anticholinergic side-effects, including dry mouth, are designed to discourage over-use.

Correct Answer: A

Rationale: The digestive system breaks down food into fatty acids and glycerol, and the circulatory system transports these to cells for fat synthesis. Excretory removes waste, not nutrients. Immune and muscular and reproductive systems are unrelated to fat synthesis.

Correct Answer: C

Rationale: The digestive system processes food into nutrients for the body, making 'food-processing system' correct. Breathing relates to the respiratory system, nerves to the nervous system, and blood transport to the circulatory system.