The nurse is providing discharge instructions to a patient who has a prescription for phenytoin. Which of the following information should the nurse include?

Rationale for Choice A:
Phenytoin is an anticonvulsant medication used to control seizures. It is typically a long-term medication, and abruptly stopping it can lead to breakthrough seizures or worsen existing seizures.
This statement indicates that the client may not understand the importance of taking phenytoin consistently and the potential consequences of discontinuing it without consulting their doctor.

Rationale for Choice B:
Making an appointment with a dentist is important for all individuals, including those with seizure disorders. There is no specific concern related to phenytoin and dental care that would necessitate further teaching in this context.

Rationale for Choice C:
It is important for clients to understand that switching brands of phenytoin might affect its effectiveness due to slight variations in formulation. However, simply stating awareness of this fact does not necessarily indicate a need for further teaching, as the nurse can assess the client's understanding through further questioning.

Rationale for Choice D:
Notifying a doctor before taking any new medications is crucial for individuals with seizures, as some medications can interact with phenytoin and increase the risk of seizures. This statement demonstrates the client's understanding of an important safety precaution.
Therefore, Choice A is the only statement that suggests a potential lack of understanding about the long-term nature of phenytoin treatment and the dangers of discontinuing it without medical supervision. This highlights the need for further education to ensure the client's safety and adherence to the prescribed medication regimen.

Choice A rationale:
Lymph nodes are small, bean-shaped structures that play a crucial role in the immune system. They filter lymph fluid, which carries white blood cells and other immune cells throughout the body.
When the body is fighting an infection or other immune challenge, lymph nodes often swell and become tender. This is because they are actively working to filter out pathogens and activate immune cells.
Palpation of the lymph nodes can provide valuable information about the patient's immune function. The nurse can assess for enlargement, tenderness, and mobility of the lymph nodes.
Lymph node assessment is a non-invasive, painless procedure that can be performed quickly and easily.
Choice B rationale:
Auscultation of the apical heart rate is important for assessing cardiovascular function, but it does not directly assess immune function.
While heart rate can be indirectly affected by certain immune conditions (e.g., fever), it is not a primary indicator of immune system activity.
Choice C rationale:
Palpation of the liver can provide information about liver size and consistency, but it does not directly assess immune function.
The liver plays a role in immune function by producing proteins that help fight infection, but its size and consistency do not necessarily reflect its immune activity.
Choice D rationale:
Percussion of the abdomen can be used to assess the size and location of abdominal organs, but it does not directly assess immune function.
While certain immune conditions may involve abdominal organs (e.g., splenomegaly), percussion is not a primary method for assessing immune function.