Correct Answer: C

Rationale: Monitoring the digoxin level is crucial as it helps determine the drug's effectiveness and potential toxicity. A digoxin level of 1 ng/mL is within the therapeutic range. However, levels above this range can lead to toxicity, causing adverse effects like nausea, vomiting, visual disturbances, and dysrhythmias. Therefore, the nurse should report a digoxin level of 1 ng/mL to the provider for further evaluation and potential dose adjustment.

Correct Answer: A

Rationale: When St. John's wort, an herbal supplement, is taken with citalopram, a selective serotonin reuptake inhibitor (SSRI), there is a risk of serotonin syndrome. Serotonin syndrome is a serious condition that can occur when there is an excess of serotonin in the body, leading to symptoms such as confusion, hallucinations, rapid heart rate, increased body temperature, and more. Monitoring for serotonin syndrome is crucial when these substances are taken together to prevent any potential harm to the client.

Correct Answer: D

Rationale: After an acute myocardial infarction, cardiac rehabilitation is crucial for the client's recovery. It helps improve the client's overall cardiovascular health, reduces the risk of future cardiac events, and promotes a healthy lifestyle. The other options do not directly address the importance of cardiac rehabilitation in the client's recovery process.

Correct Answer: B

Rationale: When a client requests the creation of a living will, the nurse's priority is to evaluate the client's understanding of life-sustaining measures. This involves ensuring that the client comprehends the implications of various life-sustaining interventions and can make informed decisions about their care preferences in the event they are unable to communicate them later. It is crucial for the nurse to assess the client's comprehension to ensure that the living will accurately reflects the client's wishes and values.

Correct Answer: A

Rationale: The correct response is A: 'Your baby needs an IV because she is not producing any tears.' In infants, the inability to produce tears is a sign of severe dehydration. This is a crucial indication for the need for intravenous (IV) fluid therapy to rehydrate the infant. While the other options may also be symptoms of dehydration, the absence of tears is a more direct and specific indicator requiring immediate attention and intervention.