Correct Answer: B

Rationale: Before administering a beta blocker, it is crucial to check the apical pulse. Beta blockers have the potential to slow down the heart rate, making it essential to assess the pulse rate to ensure it is within the safe range before giving the medication. Checking the serum potassium level (choice A) is important when administering certain medications, but it is not specifically required before giving a beta blocker. Oxygen saturation (choice C) and pupil reaction to light (choice D) are not directly related to monitoring parameters for beta blocker administration.

Correct Answer: B

Rationale: The correct instruction for the nurse to include is to advise the client to report a pulse rate below 60 beats per minute. Beta blockers are known to lower heart rate, and a pulse rate below 60 beats per minute may indicate bradycardia, a condition that requires medical attention. Option A, 'Take the medication with a meal,' is incorrect because beta blockers don't necessarily need to be taken with food. Option C, 'Discontinue the medication if dizziness occurs,' is incorrect because abrupt cessation of beta blockers can lead to rebound hypertension and other adverse effects. Option D, 'Avoid drinking grapefruit juice,' is unrelated to beta blockers' mechanism of action or side effects.

Correct Answer: A

Rationale: The correct instruction to reinforce is to 'Report any chest pain or discomfort to your health care provider.' This is crucial because chest pain post-angioplasty can indicate complications that need immediate attention. Choice A is incorrect because returning to work immediately may not be advisable after angioplasty, as the client needs time to recover. Choice B is incorrect because avoiding all physical activity for 2 weeks may not be necessary; instead, gradual resumption of activities is usually recommended. Choice D is incorrect because aspirin should be taken as prescribed by the healthcare provider, not just when chest pain occurs.

Correct Answer: C

Rationale: The correct instruction for a client starting metformin is to increase fluid intake. This is crucial to prevent gastrointestinal discomfort, a common side effect of metformin. Adequate hydration can also help reduce the risk of kidney problems associated with metformin use. Choices A, B, and D are incorrect. While it's generally recommended to take metformin with food to reduce stomach upset, monitoring for signs of hypoglycemia is more relevant for other antidiabetic medications, and a metallic taste in the mouth is not a common side effect of metformin.

Correct Answer: C

Rationale: Furosemide is a loop diuretic that can lead to potassium loss, resulting in hypokalemia. Hypokalemia is a serious electrolyte imbalance that can cause various cardiac and muscular issues. Therefore, the nurse should promptly report hypokalemia to the healthcare provider for appropriate management. Choices A, B, and D are incorrect because weight gain, dry cough, and increased appetite are not typically associated with furosemide use and are not immediate concerns that require urgent reporting.