Correct Answer: C

Rationale: Carvedilol, a beta-blocker, is primarily prescribed in patients with chronic heart failure to decrease heart rate and reduce the workload on the heart. By lowering the heart rate, carvedilol helps the heart function more efficiently and improves symptoms in patients with heart failure.

Correct Answer: A

Rationale: The correct instruction for a client prescribed digoxin is to take their pulse before each dose and hold the medication if the pulse is below 60 beats per minute. This is crucial to prevent digoxin toxicity, as digoxin can cause adverse effects when the pulse rate is too low. Monitoring the pulse regularly ensures safety and appropriate management of the medication.

Correct Answer: B

Rationale: The correct instruction for a client with a prescription for enoxaparin (Lovenox) is not to expel the air bubble from the syringe before injection. This ensures the full dose is delivered without affecting the medication's efficacy. Expelling the air bubble may lead to a loss of medication, resulting in suboptimal treatment. Therefore, it is crucial for the client to follow this instruction to receive the intended therapeutic effect of enoxaparin.

Correct Answer: D

Rationale: When a patient with depression is prescribed fluoxetine, the nurse should be vigilant for the potential side effect of increased risk of suicidal thoughts. Fluoxetine, like other antidepressants, may elevate the risk of suicidal thoughts, particularly during the initial phases of treatment. Monitoring the patient for any indications of heightened depression or suicidal ideation is crucial to ensure appropriate interventions are implemented promptly.

Correct Answer: B

Rationale: Salmeterol is classified as a long-acting beta2-agonist, which is used to prevent asthma attacks by providing extended bronchodilation. It is not typically used for immediate relief of acute bronchospasm or for suppressing cough. Additionally, salmeterol does not have the primary purpose of thinning respiratory secretions.