Which lab value should the nurse monitor in a patient taking antithyroid drugs?

Choice A rationale

Clonidine is a centrally acting alpha-2 adrenergic agonist. While it is an effective antihypertensive, it has been associated with adverse effects on the liver, including hepatitis and elevated liver enzymes. For a patient with a history of cirrhosis, which involves irreversible liver damage and impaired function, a drug with potential hepatotoxicity is a poor choice as it could worsen the underlying liver disease.

Choice B rationale

Prazosin is an alpha-1 adrenergic blocker. It is a suitable choice for this patient. Unlike other antihypertensives, it does not typically cause adverse effects on the liver or pancreas. Its mechanism of action, causing vasodilation by blocking alpha-1 receptors, is not known to exacerbate either pancreatitis or cirrhosis. Therefore, it is a safe and effective option given the patient's co-morbidities.

Choice C rationale

Diltiazem is a calcium channel blocker. While generally safe, some calcium channel blockers have been associated with potential exacerbation of pancreatic inflammation. Although diltiazem is not the most common culprit, its use should be approached with caution in a patient with a history of pancreatitis due to the potential for pancreatic adverse effects. This makes it a less ideal choice compared to a drug with no known pancreatic side effects.

Choice D rationale

Captopril is an ACE inhibitor. This class of drugs has been associated with a potential risk of hepatotoxicity, including cholestatic jaundice and liver failure, although these are rare. In a patient with pre-existing cirrhosis, the liver's ability to metabolize drugs is already compromised, which increases the risk of drug accumulation and potential toxicity. Therefore, it would be a less favorable choice due to the risk of worsening liver function.

Choice A rationale

While adequate fluid intake is important for overall health, it does not directly counteract the sedative or unsteady side effects of an anxiolytic medication. Increasing fluid intake will not improve drowsiness or unsteadiness caused by central nervous system depression, and it is not a standard or effective nursing intervention for these specific adverse effects.

Choice B rationale

Anxiolytics, particularly benzodiazepines, are central nervous system depressants that cause drowsiness and impair coordination and judgment. Due to the sedative effects and potential for unsteadiness and ataxia, it is crucial to advise patients to avoid activities that require alertness and precise motor skills, such as driving or operating heavy machinery, to prevent accidents.

Choice C rationale

Alcohol and anxiolytics are both central nervous system depressants. Taking them together has a synergistic effect, meaning their combined depressive effects are greater than the sum of their individual effects. This can significantly increase the risk of severe drowsiness, respiratory depression, and even coma or death. Patients must be warned to avoid alcohol completely.

Choice D rationale

Abruptly discontinuing an anxiolytic, especially a benzodiazepine, can lead to severe withdrawal symptoms, including rebound anxiety, insomnia, tremors, and even seizures. The medication should not be stopped immediately by the patient without consulting a healthcare provider. The dose should be tapered slowly under medical supervision to prevent these dangerous effects.

Choice E rationale

While light exercise can be beneficial for mood and anxiety, it is not a primary or safe recommendation for a patient experiencing drowsiness and unsteadiness due to anxiolytic medication. Engaging in physical activity while feeling unsteady could increase the risk of falls and injury. The priority is to ensure the patient's safety by avoiding risky activities.