a nurse is teaching a client who has a new prescription for lithium which of the following instructions should the nurse include

ATI RN

Proctored Pharmacology ATI

1. When teaching a client with a new prescription for Lithium, which instruction should the nurse include?

A. Restrict fluid intake to 1,000 mL per day.
B. Maintain a consistent sodium intake.
C. Take the medication at bedtime.
D. Expect to have frequent headaches.

Correct answer: B

Rationale: Maintaining a consistent sodium intake is crucial when taking Lithium to help regulate lithium levels in the body and prevent toxicity. Sodium levels can impact the effectiveness and safety of Lithium therapy. Restricting fluid intake to 1,000 mL per day (Choice A) is not appropriate and could lead to dehydration. Taking the medication at bedtime (Choice C) may vary depending on the individual's schedule but is not a critical instruction. Expecting to have frequent headaches (Choice D) is not a common side effect of Lithium.

2. Before administering lithium to a client with bipolar disorder who has been taking the medication for 1 year, the nurse should check to see that which of the following tests has been completed?

A. Thyroid hormone assay
B. Liver function tests
C. Erythrocyte sedimentation rate
D. Brain natriuretic peptide

Correct answer: A

Rationale: The correct answer is to check the thyroid hormone assay. Long-term lithium use can result in thyroid dysfunction, making it crucial to monitor the client's thyroid function regularly to detect any abnormalities early and prevent potential complications. Liver function tests (choice B) are not specifically associated with lithium therapy. Erythrocyte sedimentation rate (choice C) is a nonspecific test for inflammation and not directly related to lithium therapy. Brain natriuretic peptide (choice D) is a test used to diagnose heart failure and is not relevant to monitoring lithium therapy.

3. At what amount does Acetaminophen stop effectively controlling pain?

A. Over 1,000 mg
B. 750 mg
C. Over 1,500 mg
D. 150 mg

Correct answer: A

Rationale: Acetaminophen is known to lose its effectiveness in controlling pain beyond a dosage of 1,000 mg. Taking more than 1,000 mg will not provide additional pain relief but can increase the risk of adverse effects. Choice B (750 mg) is incorrect because this amount is within the typical recommended dose range for Acetaminophen. Choice C (Over 1,500 mg) is incorrect as it suggests a higher dose than the point at which Acetaminophen starts to lose its effectiveness. Choice D (150 mg) is too low a dose to effectively control pain for most adults.

4. What is the therapeutic action of Phenytoin?

A. Antidiabetic
B. Anticonvulsant
C. Mood stabilizer
D. Antianxiety agent

Correct answer: B

Rationale: Phenytoin is primarily used as an anticonvulsant to prevent and control seizures. It works by stabilizing electrical activity in the brain, making it effective in managing conditions like epilepsy. Antidiabetic medications are used to regulate blood sugar levels, mood stabilizers help manage mood disorders, and antianxiety agents are used to reduce anxiety symptoms, none of which are the primary therapeutic action of Phenytoin.

5. When administering Lithium to a patient, what is a life-threatening side effect?

A. Erythema
B. Pancreatitis
C. Seizures
D. Headache

Correct answer: C

Rationale: When a patient is being treated with Lithium, a life-threatening side effect to watch out for is seizures. Lithium can lower the seizure threshold, increasing the risk of seizures. Seizures are serious and necessitate prompt medical intervention to ensure the patient's safety and well-being. Erythema, which is redness of the skin, is not a common life-threatening side effect of Lithium. Pancreatitis can be a side effect of Lithium, but it is not typically life-threatening. Headache is a common side effect of Lithium, but it is not considered life-threatening.