a client on lithium has diarrhea and vomiting what should the nurse do first
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Nursing Elites

NCLEX-RN

NCLEX RN Exam Review Answers

1. A client on lithium has diarrhea and vomiting. What should the nurse do first?

Correct answer: D

Rationale: Diarrhea and vomiting are manifestations of lithium toxicity. The priority action for the nurse is to hold the next dose of lithium and obtain an order for a stat serum lithium level to confirm toxicity. This ensures patient safety and prevents further harm. Recognizing it as a drug interaction is not the first step in this scenario. Cogentin is used to manage extrapyramidal symptoms (EPS) associated with antipsychotics, not lithium toxicity. Reassuring the client about these symptoms as common side effects of lithium therapy is inappropriate as they indicate a more serious issue than typical side effects like hand tremors, nausea, polyuria, and polydipsia.

2. What ethical principle has led to the need for informed consent?

Correct answer: A

Rationale: Autonomy is the ethical principle that emphasizes an individual's right to make their own decisions if they are mentally competent. Informed consent is a direct result of this principle, as it ensures that patients are fully informed before agreeing to any medical intervention. Autonomy is crucial in healthcare as it respects patients' rights and promotes self-determination. Justice, fidelity, and beneficence are important ethical principles in healthcare, but they do not directly lead to the need for informed consent. Justice focuses on fairness and equal treatment, fidelity on trustworthiness and loyalty, and beneficence on doing good for the patient's benefit.

3. One of the complications of complete bed rest and immobility is which of the following?

Correct answer: A

Rationale: Plantar flexion, or foot drop, is a common complication of complete bed rest and immobility. This condition occurs due to the weakening of muscles that lift the foot, leading to the foot dragging or being unable to clear the ground during walking. Dorsiflexion refers to moving the foot upwards, which is not a typical complication of immobility. Extension contractures involve the inability to fully extend a joint, while adduction contractures refer to the inability to move a limb away from the body. These types of contractures can also occur with immobility, but they are not specifically associated with foot drop.

4. A nursing unit is implementing a new electronic charting program for the nursing staff to use. Which of the following best describes a disadvantage of using electronic charting?

Correct answer: D

Rationale: A significant disadvantage of implementing a new electronic charting program is the potential for complexity and difficulty in implementation. Introducing a new system requires time and education for staff to adapt and use it appropriately. Users may experience confusion as they learn to navigate the new charting techniques, which can impact workflow efficiency and accuracy. Option A is incorrect because electronic charting systems are designed to enhance data security and integrity, reducing the risk of information being lost or misused. Option B is incorrect as access control mechanisms can restrict who can view specific patient records. Option C is incorrect as electronic charting systems often facilitate communication between healthcare providers by providing real-time access to patient information.

5. Which of the following interventions is necessary before insertion of an arterial line into the radial artery?

Correct answer: C

Rationale: Before inserting an arterial line into the radial artery, it is crucial to perform an Allen test. The Allen test assesses the collateral circulation to the hand by compressing both the radial and ulnar arteries. By occluding the radial artery and releasing the ulnar artery, the nurse can check if the ulnar artery can adequately supply blood to the hand if the radial artery is cannulated. This step ensures that there is adequate circulation to the hand post-insertion of the arterial line. Choice A, ensuring that the client does not need surgery, is not directly related to the insertion of an arterial line and is not a necessary step before the procedure. Choice B, assessing grip strength, is not specific to the vascular status of the hand and does not provide information about the adequacy of collateral circulation. Choice D, checking a serum potassium level, is unrelated to the assessment of radial artery patency and collateral circulation, which are the primary concerns before arterial line insertion.

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