which physiologic mechanism best describes the function of the sodium potassium pump which physiologic mechanism best describes the function of the sodium potassium pump
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NCLEX NCLEX-PN

Quizlet NCLEX PN 2023

1. Which physiologic mechanism best describes the function of the sodium-potassium pump?

Correct answer: active transport

Rationale: Active transport is the correct answer as it accurately describes the process involved in the sodium-potassium pump. The pump utilizes energy to move ions against their concentration gradient, maintaining cellular concentrations. Diffusion (choice B) is a passive process where substances move from an area of higher concentration to lower concentration. Filtration (choice C) involves the movement of solutes based on pressure gradients. Osmosis (choice D) is the movement of water across a semipermeable membrane.

2. Assessment of the client with an arteriovenous fistula for hemodialysis should include:

Correct answer: palpation of thrill.

Rationale: The correct answer is to palpate for a thrill. A thrill should be present in a functioning arteriovenous fistula (AVF) and indicates good blood flow. The client should be educated to check for this sensation daily at home to monitor the AVF's patency. Visible pulsations are not typically observed in an AVF. Percussion for dullness does not provide relevant information about the AVF. Auscultation of blood pressure is not a standard practice in assessing an AVF. However, auscultation of the AVF for a bruit, a sound indicating turbulent blood flow, is crucial in evaluating the AVF's patency.

3. Which of the following methods of contraception is able to reduce the transmission of HIV and other STDs?

Correct answer: D

Rationale: The correct answer is the vaginal sponge. The vaginal sponge is a barrier method of contraception that, when used with foam or jelly contraception, reduces the transmission of HIV and other STDs, as well as reducing the risk of pregnancy. Intrauterine devices (IUDs), Norplant, and oral contraceptives can prevent pregnancy but not the transmission of HIV and STDs. Clients using the contraceptive methods in Choices A, B, and C should be counseled to use a chemical or barrier contraceptive to decrease the transmission of HIV or STDs.

4. Delegation of tasks to appropriate personnel allows the nurse to:

Correct answer: keep other members of the team productive.

Rationale: Delegating tasks to appropriate personnel is essential for a nurse to keep other team members productive. By assigning tasks that align with the specific roles and responsibilities of team members, the nurse can enhance work effectiveness and efficiency. Option A is incorrect because delegation is not primarily about ensuring tasks are evenly distributed but rather about utilizing team members' skills effectively. Option C is incorrect as maintaining tight control of all aspects of the workflow can hinder teamwork and limit individual growth. Option D is incorrect because effective delegation involves empowering team members to make decisions within their scope of practice, rather than solely recognizing the importance of their roles.

5. During a stress test, a patient complains of severe chest pain. Which of the following medications is the most appropriate to relieve this discomfort?

Correct answer: Procardia

Rationale: In this scenario, the most appropriate medication to relieve severe ischemic chest pain during a stress test is Procardia. Procardia, a calcium channel blocker, is effective in quickly alleviating chest pain by dilating coronary arteries, improving blood flow to the heart muscle. Aspirin, although important for antiplatelet effects, is not the best choice for immediate relief of severe chest pain. Diazoxide is a vasodilator used in hypertensive emergencies, not for acute chest pain. Mannitol is an osmotic diuretic used to reduce intracranial pressure, not for chest pain relief.

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