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.

Correct Answer: C

Rationale: Furosemide is a loop diuretic that works by promoting the excretion of water and electrolytes, including potassium. This loss of potassium can lead to hypokalemia, which can be a potential side effect of furosemide administration. Hypokalemia can result in cardiac dysrhythmias and other complications, especially in clients with heart failure who may already have compromised cardiac function. Therefore, monitoring for signs of hypokalemia, such as muscle weakness, cardiac irregularities, and fatigue, is essential when administering furosemide. Choice A, hypertension, is incorrect because furosemide is actually used to treat hypertension by reducing excess fluid in the body. Choice B, hyperkalemia, is incorrect as furosemide causes potassium loss, leading to hypokalemia. Choice D, hypoglycemia, is unrelated to the mechanism of action of furosemide and is not a common side effect associated with its administration.

Correct Answer: D

Rationale: A productive cough can indicate pulmonary toxicity, a serious side effect of amiodarone, and should be reported. Dry skin is not typically associated with amiodarone use. Weight loss is a common side effect of amiodarone but not generally a cause for concern unless severe. Bradycardia is a known side effect of amiodarone and may not necessarily require immediate reporting unless symptomatic.

Correct Answer: A

Rationale: The correct instruction when teaching a client about nitroglycerin (Nitrostat) is to take it at the first sign of chest pain. Nitroglycerin works rapidly to dilate blood vessels, improving blood flow to the heart muscle. Taking it promptly can help alleviate symptoms quickly and prevent the condition from worsening. Choice B is incorrect because nitroglycerin is usually taken sublingually (under the tongue) and not swallowed. Choice C is incorrect because nitroglycerin is not typically taken with meals. Choice D is incorrect because nitroglycerin should be stored in its original container away from heat and light.

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.