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. Which action is appropriate for the nurse to delegate to unlicensed assistive personnel (UAP)?

Correct answer: B

Rationale: Labeling specimens obtained during a percutaneous lung biopsy is a task that can be appropriately delegated to unlicensed assistive personnel (UAP) as it does not require nursing judgment. UAP can perform this task safely under the supervision of a nurse. Listening to a patient's lung sounds for wheezes or rhonchi, instructing a patient about how to use home spirometry testing, and measuring induration at the site of a patient's intradermal skin test all require nursing judgment and interpretation of findings. These tasks should be performed by licensed nursing personnel to ensure accurate assessment and appropriate intervention.

3. A client has died approximately one hour ago. The nurse notes that the client's temperature has decreased in the last hour since their death. Which of the following processes explains this phenomenon?

Correct answer: C

Rationale: Algor mortis occurs after death when the body's circulation stops, and the client's temperature begins to fall. The client's temperature will drop by approximately 1.8 degrees per hour until it reaches room temperature. During algor mortis, the client's skin gradually loses its elasticity. Rigor mortis refers to the stiffening of the body after death due to chemical changes in the muscles. Postmortem decomposition is the breakdown of tissues after death. Livor mortis is the pooling of blood in the dependent parts of the body, causing a purple-red discoloration.

4. A patient has been told to monitor her LH levels. Which of the following potential conditions might the patient be suffering from?

Correct answer: D

Rationale: Luteinizing hormone (LH) is released by the pituitary gland to stimulate ovulation. One of the common reasons for monitoring LH levels is infertility. In women with infertility, LH levels are monitored to time intercourse accurately to maximize the chances of conception. Menorrhagia (choice A) is characterized by heavy menstrual bleeding and is not directly related to LH levels. Grave's Disease (choice B) is an autoimmune disorder affecting the thyroid gland and is not typically monitored by LH levels. Menopause (choice C) is a natural process marking the end of a woman's reproductive years and is not a condition where LH monitoring for infertility is common.

5. Which of the following items of subjective client data would be documented in the medical record by the nurse?

Correct answer: D

Rationale: The correct answer is 'Client feels nauseated.' Subjective data refers to the client's sensations, feelings, and perception of their health status. It can only be reported by the client as it is based on their personal experiences. The feeling of nausea is a subjective symptom that the client experiences and can provide insight into their health condition. Choices A and B represent objective data, as they describe observable or measurable findings that can be detected by the nurse. Choice C involves information reported by someone other than the client, making it indirect and not purely subjective.

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