Pharmacology for LPN

Correct Answer: A

Rationale: Being NPO (nothing by mouth) for 6 to 8 hours before a cardiac catheterization is crucial to prevent complications such as aspiration during the procedure. This helps ensure the safety and accuracy of the test results by minimizing the risk of food or liquid in the stomach interfering with the procedure. Choice B is incorrect because the client will need to lie still during the procedure to ensure its accuracy. Choice C is incorrect as the client is typically required to lie flat for a few hours after the test, not several hours. Choice D is incorrect as the client is usually not allowed to drink fluids immediately before the test to prevent complications.

Correct Answer: A

Rationale: Bradycardia is a common sign of digoxin toxicity and should be closely monitored. Digoxin toxicity can lead to various cardiac dysrhythmias, with bradycardia being a significant indicator. Monitoring the client's heart rate is crucial to detect and manage digoxin toxicity promptly. Tachycardia, hypertension, and hyperglycemia are not typically associated with digoxin toxicity. Tachycardia is more commonly seen with inadequate treatment of heart failure, hypertension is a possible but less common effect, and hyperglycemia is not a typical sign of digoxin toxicity.

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: B

Rationale: Corrected Rationale: Beta blockers are medications that can cause bradycardia by slowing down the heart rate. It is essential to monitor for this side effect in clients receiving beta blockers, as it can lead to serious complications such as decreased cardiac output and hypotension. Choices A, C, and D are incorrect because beta blockers are not expected to cause tachycardia (fast heart rate), hypertension (high blood pressure), or hyperglycemia (high blood sugar levels).

Correct Answer: A

Rationale: A weight gain of 2 pounds in 2 days is concerning in a client with heart failure as it can indicate fluid retention and worsening of the condition. This finding requires immediate medical attention to prevent further complications. Increased urination at night (choice B) may be due to various reasons like diuretic use and is not an immediate concern. Mild shortness of breath on exertion (choice C) is expected in clients with heart failure and may not require immediate reporting. Decreased appetite and fatigue (choice D) are common symptoms in heart failure but are not as urgent as sudden weight gain.