The client is taking niacin for cholesterol reduction. What common adverse reaction should the nurse warn the client about?

Correct Answer: D

Rationale: The correct answer is D: Facial flushing. Niacin commonly causes facial flushing as an adverse reaction due to prostaglandin release. This is a well-known side effect and is usually harmless. Dizziness (A), urinary retention (B), and constipation (C) are not common adverse reactions associated with niacin use. It is important for the nurse to educate the client about the potential for facial flushing with niacin therapy to manage expectations and ensure compliance.

Correct Answer: C

Rationale: The correct answer is C because in atrial fibrillation, the chaotic and irregular electrical activity in the atria results in the absence of distinct P waves on the ECG. This is due to the disorganized depolarization of the atria, leading to the absence of a clear, identifiable P wave. Therefore, the nurse can accurately state that the P wave is absent in the ECG of a client with atrial fibrillation. Choices A, B, and D are incorrect: A: It precedes a long PR interval - This statement is not accurate for atrial fibrillation as the irregular electrical activity disrupts the normal conduction pathway, leading to variable PR intervals. B: It falls on the previous T wave - This scenario would indicate an abnormality in the ECG, but it does not specifically relate to atrial fibrillation. D: It is peaked - While peaked P waves can indicate certain conditions like right atrial enlargement, this is not a characteristic finding in atr

Correct Answer: B

Rationale: The correct answer is B because during an exercise echocardiogram, the client typically exercises on a treadmill to stress the heart. This helps evaluate how the heart functions under physical exertion. After exercising, the client immediately undergoes an echocardiogram to assess the heart's response to stress. This test provides valuable information about heart function during activity. Choice A is incorrect because lying on the back is not part of the standard procedure for an exercise echocardiogram. Choice C is incorrect as lying on the right side is not a common position for this test. Choice D is incorrect because electrocardiographic monitoring is essential during an exercise echocardiogram to assess the heart's electrical activity throughout the test.

Correct Answer: D

Rationale: The correct answer is D: participation in daily activities without chest pain. This is because the effectiveness of Nadolol in treating chronic stable angina and left ventricular dysfunction is indicated by the patient's ability to engage in daily activities without experiencing chest pain, which reflects improved myocardial oxygen supply. A: decreased blood pressure and heart rate is incorrect because Nadolol is a beta-blocker, which can lower blood pressure and heart rate as a side effect, but the primary goal is to reduce angina symptoms. B: fewer complaints of having cold hands and feet is incorrect as it is not a direct indicator of Nadolol's effectiveness in treating angina and left ventricular dysfunction. C: improvement in the strength of the distal pulses is incorrect as it may not directly correlate with the drug's effectiveness in managing angina and left ventricular dysfunction.

Correct Answer: B

Rationale: The correct answer is B. This statement indicates a misunderstanding about the procedure for CABG surgery using the internal mammary artery. The internal mammary artery is typically used for the bypass graft, not a vein from the leg. The other choices (A, C, D) are all accurate statements related to CABG surgery. Choice A correctly describes the use of a heart-lung machine during surgery. Choice C accurately explains the purpose of using an artery near the heart for the bypass. Choice D is true as aspirin is often prescribed post-surgery to prevent graft occlusion. Therefore, B is the incorrect choice as it does not align with the procedure being discussed.