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. When a patient refuses to believe a terminal diagnosis, they are exhibiting:

Correct answer: C

Rationale: Denial is a defense mechanism where a patient rejects a reality that is too painful or difficult to accept. In the context of a terminal diagnosis, the patient may refuse to believe it in order to avoid facing the harsh truth. Regression (choice A) involves reverting to earlier, more childlike behaviors and is not applicable in this scenario. Mourning (choice B) is the process of grieving a loss, which typically occurs after acceptance of the diagnosis. Rationalization (choice D) is creating logical explanations to justify unacceptable behaviors, which is not the case when a patient denies a terminal diagnosis.

3. After a class on culture and ethnicity, the new graduate nurse reflects a correct understanding of the concept of ethnicity with which statement?

Correct answer: C

Rationale: Ethnicity pertains to a social group that may possess shared traits such as common geographic origin, migratory status, religion, language, values, traditions, or symbols and food preferences. Culture is dynamic, ever-changing, and learned from birth through the processes of language acquisition and socialization. Religion is the belief in a higher power. Ethnicity pertains to a social group within the social system that claims to have variable traits, such as a common geographic origin, migratory status, religion, race, language, values, traditions, symbols, or food preferences.

4. A client's intake and output are being calculated by a nurse. During the last shift, the client consumed � cup of gelatin, a skinless chicken breast, 1 cup of green beans, and 300 cc of water. The client also urinated 250 cc and had 2 bowel movements. What is this client's intake and output for this shift?

Correct answer: A

Rationale: The correct answer is 420 cc intake and 250 cc output for this shift. To calculate the intake, � cup of gelatin (approximately 120 cc) and 300 cc of water should be added together, resulting in 420 cc. Food intake like the chicken breast and green beans is not converted to cc's but may be documented for hospital protocol. Output includes urine (250 cc in this case) and other forms like vomit, diarrhea, or gastric suction. Bowel movements are not converted to cc's, but the nurse may need to document the number of stools passed. Choices B, C, and D are incorrect because they do not accurately reflect the intake and output calculations based on the information provided.

5. During the evaluation of the quality of home care for a client with Alzheimer's disease, the priority for the nurse is to reinforce which statement by a family member?

Correct answer: C

Rationale: The correct answer is, '"We have safety bars installed in the bathroom and have 24-hour alarms on the doors."?' Ensuring the safety of a client with Alzheimer's disease is crucial in home care. Installing safety features like bars in the bathroom and alarms on doors help prevent accidents and injuries. This contributes to creating a safe environment that promotes independence and autonomy for the client. Choices A, B, and D are incorrect because while they are important aspects of care, ensuring safety in the home environment takes precedence in caring for a client with Alzheimer's disease.

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