Correct Answer: A

Rationale: In a client with myocardial infarction experiencing chest pain during activity, the priority action is to stop the activity immediately to reduce the heart's workload and oxygen demand. Assisting the client back to bed helps in reducing stress on the heart and can prevent worsening of the condition. Reporting the chest pain episode to the healthcare provider is important but should not delay taking immediate action to alleviate symptoms. Taking the client's blood pressure and administering nitroglycerin are secondary actions after ensuring the client's safety and comfort.

Correct Answer: C

Rationale: Assessing the apical pulse is crucial before administering digoxin because the medication can lead to bradycardia. Monitoring the apical pulse helps determine the heart rate, and digoxin is typically withheld if the pulse is below 60 beats per minute. This assessment is essential to prevent potential adverse effects associated with digoxin administration.

Correct Answer: C

Rationale: In a client with coronary artery disease (CAD), ensuring the availability of oxygen and a flowmeter at the bedside is crucial. Oxygen is essential for adequate oxygenation, which helps prevent myocardial ischemia, a common complication in CAD.

Correct Answer: D

Rationale: Assessing the client's level of consciousness is the priority action post-CABG surgery to monitor for signs of cerebral hypoxia or other complications that require immediate intervention. Changes in the client's level of consciousness can indicate neurological deterioration, which is critical to address promptly in this postoperative period.

Correct Answer: D

Rationale: Lemonade is the correct choice as it is caffeine-free, unlike tea, cola, and coffee, which contain caffeine that can potentially affect the client's heart rhythm. Caffeine can increase heart rate and blood pressure, which may not be advisable for a client with a recent MI.