What is the primary action of amlodipine when prescribed to a patient with hypertension?

Correct Answer: B

Rationale: The primary action of amlodipine is to reduce blood pressure by relaxing and dilating blood vessels, leading to improved blood flow and lower blood pressure. This is achieved by blocking calcium channels in the blood vessels. Increasing heart rate (A), lowering cholesterol levels (C), and decreasing blood sugar levels (D) are not the primary actions of amlodipine and are not directly related to its mechanism of action in treating hypertension.

Correct Answer: B

Rationale: The correct answer is B: Suppress thyroid hormone production. PTU is an antithyroid medication used to inhibit the synthesis of thyroid hormones, effectively suppressing their production. This helps to manage hyperthyroidism by reducing excessive levels of thyroid hormones in the body. Choices A, C, and D are incorrect as PTU does not aim to increase hormone production, enhance iodine absorption, or stimulate the thyroid gland. Understanding the mechanism of action of PTU is crucial in recognizing its primary purpose in treating hyperthyroidism.

Correct Answer: B

Rationale: Correct Answer: B (Liver toxicity) Rationale: 1. Valproic acid is known to cause liver toxicity. 2. The nurse should monitor liver function tests regularly. 3. Signs of liver toxicity include jaundice, abdominal pain, and nausea. 4. Prompt detection is crucial to prevent serious complications. Summary: A: Hypertension - Not a common side effect of valproic acid. C: Hyperglycemia - More commonly associated with other medications like antipsychotics. D: Bradycardia - Not a typical side effect of valproic acid.

Correct Answer: A

Rationale: The correct answer is A: Relieve neuropathic pain. Gabapentin is commonly used to treat neuropathic pain by stabilizing electrical activity in the brain and nervous system. It is effective in conditions such as diabetic neuropathy and postherpetic neuralgia. Choice B is incorrect because gabapentin does not have anti-inflammatory properties. Choice C is incorrect as gabapentin does not enhance opioid analgesia, but it can be used in conjunction with opioids for pain management. Choice D is incorrect as gabapentin is not indicated for cough suppression.

Correct Answer: C

Rationale: The primary action of digoxin in heart failure is to strengthen cardiac contractions. Digoxin inhibits the sodium-potassium pump, leading to an increase in intracellular calcium levels, which enhances the force of myocardial contractions. This helps improve cardiac output and symptoms of heart failure. Explanation: A: Incorrect - Digoxin does not increase heart rate, it mainly affects the strength of contractions. B: Incorrect - Digoxin does not decrease cardiac output; it actually helps improve it by enhancing contractility. D: Incorrect - Digoxin may have a slight effect on lowering blood pressure, but its primary action in heart failure is to strengthen cardiac contractions, not lower blood pressure.