what is the therapeutic effects of lithium
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Nursing Elites

ATI RN

ATI Pharmacology Proctored Exam 2024

1. What are the Therapeutic Effects of Lithium?

Correct answer: A

Rationale: The therapeutic effect of lithium is that it prevents or decreases the incidence of acute manic episodes in patients with bipolar disorder. Lithium is commonly used as a mood stabilizer in the treatment of bipolar disorder due to its ability to reduce the frequency and severity of manic episodes. Choices B, C, and D are incorrect as lithium is not used for the maintenance of blood glucose, control of hyperglycemia in diabetic patients, or to diminish seizure activity. These effects are not associated with the use of lithium as a medication.

2. A client with Addison's disease is being admitted for a total hip arthroplasty. The client takes hydrocortisone. What is the nurse's priority action?

Correct answer: A

Rationale: The priority action for a client with Addison's disease undergoing surgery who takes hydrocortisone is to administer a supplemental dose of hydrocortisone. Acute adrenal insufficiency (adrenal crisis) is a significant risk during surgery due to the stress placed on the body. Supplemental doses help prevent acute adrenal insufficiency and ensure the client's safety during the surgical procedure. Instructing the client about coughing and deep breathing is important post-operatively but not the priority before surgery. Collecting additional information about the client's history of Addison's disease is relevant but not the priority action before surgery. Inserting an indwelling urinary catheter is not the priority action in this scenario.

3. What is the classification of Ondansetron?

Correct answer: C

Rationale: Ondansetron is classified as an antiemetic. It is commonly used to prevent nausea and vomiting, especially in patients undergoing chemotherapy or surgery. Choice A, Antihypertensive, is incorrect as Ondansetron is not used to treat high blood pressure. Choice B, Antiarrhythmic, is incorrect as Ondansetron is not used to manage heart rhythm abnormalities. Choice D, Antiulcer agent, is incorrect as Ondansetron is not primarily indicated for treating ulcers.

4. A client has a new prescription for Atorvastatin. Which of the following instructions should be included?

Correct answer: B

Rationale: The correct answer is to avoid drinking grapefruit juice when taking Atorvastatin. Grapefruit juice can interfere with the metabolism of Atorvastatin, leading to increased blood levels of the medication, which can result in a higher risk of adverse effects, such as muscle pain and liver damage. It is important for the client to follow this instruction to ensure the safe and effective use of Atorvastatin. Choices A, C, and D are incorrect. While taking Atorvastatin with food may be recommended for some individuals to reduce stomach upset, it is not a crucial instruction. The timing of Atorvastatin administration can vary depending on individual needs and is not universally fixed to the morning. Increasing potassium-rich foods is not directly related to Atorvastatin use and is not a standard precautionary measure associated with this medication.

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

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.

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