Correct Answer: A

Rationale: The correct answer is A: 'Limit the effects of tissue damage.' After a myocardial infarction, the primary goal of care is to limit the damage to the heart muscle. This includes interventions to improve blood flow, oxygenation, and prevent further complications. Choice B ('Relieve pain and anxiety') is important but secondary to addressing tissue damage. Choice C ('Prevent arrhythmias') is also crucial but falls under the broader goal of limiting tissue damage. Choice D ('Reduce anxiety') is essential for holistic care but is not the primary goal immediately after a myocardial infarction.

Correct Answer: D

Rationale: The correct answer is D: 'Use sunscreen to prevent photosensitivity.' Methotrexate increases photosensitivity, so clients should be advised to use sunscreen to protect their skin from sun exposure. Choice A is incorrect because methotrexate is usually taken with food to reduce gastrointestinal side effects. Choice B may be important but is not specific to methotrexate therapy. Choice C is also important, but the primary reason for folic acid supplementation with methotrexate is to reduce the risk of certain side effects like anemia rather than preventing anemia itself.

Correct Answer: C

Rationale: Daily weight is the most reliable indicator of fluid volume status as it reflects changes in body fluid balance accurately. Body weight alone can fluctuate due to various factors, including food intake and bowel movements, which may not accurately represent fluid status. Intake and output provide information on fluid balance over time but may not reflect immediate changes. Skin turgor is a physical assessment finding that indicates hydration status, not overall fluid volume status.

Correct Answer: D

Rationale: A positive Chvostek's sign suggests hypocalcemia, which is a post-parathyroidectomy complication and requires prompt treatment. The other options are less urgent: being afebrile with a normal pulse is expected, no bowel movement since surgery can be managed with interventions like early ambulation and stool softeners, and no appetite for breakfast is common postoperatively and can be addressed without immediate provider notification.

Correct Answer: D

Rationale: The correct answer is D: Reduce gastric acid secretion. Proton pump inhibitors (PPIs) work by reducing gastric acid secretion, which helps prevent further irritation of the gastric mucosa and allows ulcers to heal. While promoting healing of the gastric mucosa (Choice A) is an indirect outcome of reducing gastric acid secretion, the primary mechanism of PPIs is to lower acid levels. Choice B, neutralizing the effects of stomach acid, is typically associated with antacids, not PPIs. Inhibiting the growth of Helicobacter pylori (Choice C) is usually achieved with antibiotics, not PPIs.