Correct Answer: A

Rationale: The priority focus of nursing management for a client with peritonitis is fluid and electrolyte balance to prevent shock.

Correct Answer: A

Rationale: Fasting for 8 hours ensures that the stomach is empty, which is necessary for an accurate barium swallow test.

Correct Answer: D

Rationale: The correct answer is D, Nonsteroidal anti-inflammatory drugs (NSAIDs). NSAIDs are known to cause gastritis by irritating the stomach lining. Choice A, Milk, is unlikely to cause gastritis and is actually a common remedy for mild gastritis symptoms. Choice B, Bicarbonate of soda or baking soda, is often used to relieve heartburn and indigestion, not cause gastritis. Choice C, Enteric-coated aspirin, is less likely to cause gastritis compared to NSAIDs because the enteric coating helps protect the stomach lining from irritation.

Correct Answer: C

Rationale: The correct answer is C: 'Inflammation of the gastric mucosa.' Gastritis is characterized by inflammation of the stomach lining, specifically the gastric mucosa. This inflammation can be caused by various factors such as infections, medications, alcohol, or autoimmune diseases. Choice A, 'Erosion of the gastric mucosa,' is incorrect because erosion refers to the wearing away of tissue rather than inflammation. Choice B, 'Inflammation of a diverticulum,' is incorrect because gastritis specifically involves inflammation of the stomach lining, not a diverticulum. Choice D, 'Reflux of stomach acid into the esophagus,' describes gastroesophageal reflux disease (GERD), which is different from gastritis.

Correct Answer: B

Rationale: Educating the client about the importance of turning can encourage compliance and promote understanding of the necessity to prevent complications such as pressure ulcers and pneumonia.