Correct Answer: B

Rationale: Nausea and vomiting are common signs of digoxin toxicity, which can lead to serious complications like dysrhythmias. Prompt intervention is crucial to prevent further harm to the client.

Correct Answer: A

Rationale: The correct instruction for a patient prescribed hydroxychloroquine, especially in the context of systemic lupus erythematosus (SLE), is to report any vision changes immediately. Hydroxychloroquine can potentially cause retinal damage, so prompt reporting and ophthalmologic evaluation are essential in preventing irreversible eye complications.

Correct Answer: A

Rationale: The correct response is A: 'The cancer involves only the cervix.' In staging, 'Tis' indicates cancer in situ, which means it is localized to the cervix and not invasive at this time. The differentiation of cancer cells is not part of clinical staging. Since the cancer is in situ, its origin is the cervix. Further testing is not required as the cancer has not spread beyond the cervix.

Correct Answer: C

Rationale: The primary reason for administering morphine to a patient with a myocardial infarction (MI) is to reduce cardiac workload. Morphine helps in reducing preload and afterload, which ultimately improves oxygenation to the heart muscle. By decreasing the workload on the heart, morphine can alleviate symptoms and decrease the strain on the heart muscle during an MI.

Correct Answer: A

Rationale: In acute pancreatitis, serum amylase is a crucial enzyme to monitor as it is typically elevated in this condition. Elevated serum amylase levels are a key diagnostic marker for acute pancreatitis, aiding in the assessment and management of the patient's condition.