the sinoatrial node sa is located within which of the following heart structures
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Nursing Elites

NCLEX-RN

NCLEX RN Predictor Exam

1. The Sinoatrial Node (SA) is located within which of the following heart structures?

Correct answer: C

Rationale: The Sinoatrial (SA) Node, often called the heart's natural pacemaker, is situated within the upper wall of the Right Atrium. It initiates the electrical impulses that regulate the heartbeat. Choices A, B, and D are incorrect because the SA node is not located in the Mitral Valve, Right Ventricle, or Left Atrium. It is specifically positioned in the Right Atrium to coordinate the heart's rhythm and timing.

2. A nurse is preparing to irrigate a client's indwelling catheter through a closed, intermittent system. Which of the following steps must the nurse take as part of this process?

Correct answer: D

Rationale: When performing closed intermittent system catheter irrigation, the nurse should use sterile solution at room temperature with sterile technique. It is important to position the client comfortably for easy access to the catheter site and to assess the abdomen during the procedure. Clamping the catheter should be done below the level of the injection port, not above. The correct step is to inject sterile solution through the injection port into the catheter, allowing the fluid to travel up the catheter to irrigate the tubing and the bladder.

3. You are working the 8 am to 4 pm shift. You begin to vomit at 3 pm and you do not think that you are able to continue working. You decide to immediately go home without notifying your RN supervisor. You have ________________.

Correct answer: D

Rationale: Patient abandonment is a serious violation that can lead to disciplinary action and immediate termination of employment. It is defined as leaving patients without proper consent from the supervisor. In this scenario, leaving work without notifying the RN supervisor and potentially leaving patients unattended is considered patient abandonment, as it compromises patient safety and care. Choices A and B are incorrect because having sick time or finishing work does not justify leaving without proper protocol. Choice D is incorrect as the scenario does not indicate abuse or neglect towards the patients.

4. When dismissing a 5-year-old boy from the pediatrics unit, what type of seat belt restraint should the child wear as the parents drive the car to the front door of the hospital?

Correct answer: B

Rationale: A 5-year-old child riding in a car should use a restraint system for safety. The Centers for Disease Control and Prevention recommend that children under 13 years should not ride in the front seat of a car due to safety concerns. For a 5-year-old child, a booster seat with a lap and shoulder belt in the back seat is the most appropriate choice. This setup ensures proper protection and restraint for the child's size and age. Choice A is incorrect because a 5-point restraint system facing backward is not suitable for a 5-year-old child in a car. Choice C is incorrect as a lap belt alone does not provide adequate protection for a child of this age. Choice D is incorrect as children should not be seated in the front seat, especially at this young age.

5. In which of the following ways can a nurse promote sleep for a client experiencing insomnia?

Correct answer: D

Rationale: A nurse can promote sleep for a client experiencing insomnia by addressing factors that may hinder sleep. Cold feet can disrupt sleep, so providing the client with socks to keep their feet warm can enhance comfort and aid in promoting sleep. The correct answer focuses on a direct intervention to address a specific issue that can impact sleep quality. Choices A, B, and C do not directly address the issue of cold feet, which is a common problem that can interfere with sleep in individuals with insomnia. Assisting the client to use the bathroom, giving a massage in the morning, or tucking in bed sheets tightly do not target the discomfort caused by cold feet, making them less effective interventions for promoting sleep in this scenario.

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