After sustaining a serious brain injury, the patient has recovered enough to be transferred to a rehabilitation unit for continued care. Which statement by the patient indicates that they understand realistic goal setting?

A) Hypoglycemic event often develops:
Phenytoin is an anticonvulsant, and while it can affect glucose metabolism, hypoglycemia is not a typical consequence of abruptly stopping the drug. This is not a primary concern when discontinuing phenytoin therapy. Hypoglycemia is more commonly associated with medications like insulin or sulfonylureas, not anticonvulsants like phenytoin.

B) Physical dependency on the drug develops over time:
Phenytoin does not cause physical dependence in the way that some other substances (e.g., alcohol, opioids) can. While the body can become used to a medication over time, and withdrawal symptoms can occur, the risk of physical dependence is not the main reason why phenytoin should not be stopped suddenly.

C) A heart block is likely to develop:
Phenytoin is known to have effects on cardiac conduction, and it can cause heart rhythm disturbances like bradycardia or a prolonged PR interval, especially with toxicity. However, the risk of a heart block developing due to abrupt discontinuation of phenytoin is not the primary concern.

D) Status epilepticus may develop:
The most serious risk of suddenly stopping phenytoin, or any anticonvulsant, is the potential for status epilepticus. Status epilepticus is a medical emergency where seizures occur continuously without recovery in between, which can be life-threatening. Abruptly discontinuing phenytoin can lead to a rebound increase in seizure activity, which can result in status epilepticus.

A) Take the prescribed anticoagulant specifically as directed:
Clients with mechanical heart valves are at an increased risk of developing blood clots, and therefore, anticoagulation therapy (often warfarin or another blood thinner) is necessary to prevent thromboembolic events. It is essential for the client to take the prescribed anticoagulant exactly as directed, ensuring therapeutic levels are maintained while minimizing the risk of bleeding.

B) Stop taking your antihypertensive medications until checking:
This instruction is not appropriate after heart surgery. Antihypertensive medications are typically necessary to manage blood pressure and reduce the strain on the heart. Stopping antihypertensive medications without consulting the healthcare provider could result in elevated blood pressure, which can put undue stress on the heart, especially after valve replacement surgery.

C) Avoid lifting objects ten pounds or greater for two days:
This statement is not appropriate for a client who has undergone open heart surgery. After heart surgery, particularly valve replacement, the client may be advised to avoid lifting heavy objects for a period of time (often 4-6 weeks) to prevent strain on the incision site and the heart. Two days of restriction is insufficient; longer periods of activity limitation are usually required to ensure proper healing.

D) Take your immunosuppressive medications daily in the morning:
Immunosuppressive medications are not typically prescribed for clients with mechanical heart valves. Immunosuppressive drugs are usually prescribed for clients who have had organ transplants (e.g., kidney, liver) to prevent organ rejection. Since the client in this scenario had a mitral valve replacement, immunosuppressants are not usually indicated unless there are specific complications, such as endocarditis or other infections.