A nurse is caring for a client who is prescribed warfarin via oral (PO) route.
Two hours after the administration of warfarin, the client reports having dark tarry stools and petechiae.
Based on the client's presenting symptoms, which of the following options is an antidote for warfarin toxicity?

Choice A rationale

Combining multiple hepatotoxic medications increases the risk of liver damage due to cumulative toxicity effects.

Choice B rationale

Liver damage impairs the liver's ability to metabolize medications, leading to medication accumulation and potential adverse effects.

Choice C rationale

Combining hepatotoxic medications does not decrease the risk of liver damage; it increases it, as multiple toxic agents compound the stress on the liver.

Choice D rationale

Common manifestations of hepatotoxicity include symptoms like nausea, vomiting, jaundice, dark urine, abdominal discomfort, and anorexia, indicating liver dysfunction.

Choice A rationale

Propylthiouracil (PTU) is used to treat hyperthyroidism. It works by inhibiting the production of thyroid hormones, thereby reducing symptoms of hyperthyroidism such as rapid heart rate, sweating, and nervousness.

Choice B rationale

Propylthiouracil (PTU) is not used to treat hyperglycemia. Medications for hyperglycemia include insulin and oral hypoglycemic agents.

Choice C rationale

Propylthiouracil (PTU) is not indicated for hypoglycemia. Treatment for hypoglycemia typically includes glucose administration or glucagon.

Choice D rationale

Propylthiouracil (PTU) is not used to treat hypothyroidism. Hypothyroidism is treated with thyroid hormone replacement therapy, such as levothyroxine.