the sinoatrial node sa is located within which of the following heart structures the sinoatrial node sa is located within which of the following heart structures
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NCLEX RN Predictor Exam

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

Correct answer: C: Right Atrium

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. Your patient has finished a 12-ounce can of iced tea and 8 ounces of fresh orange juice. What will you record on the Intake and Output form for this patient's intake?

Correct answer: 600 cc

Rationale: You will record 600 cc of fluid intake. There are 600 cc in 20 ounces (12 ounces of iced tea + 8 ounces of orange juice) of fluid intake. Choice A and B are incorrect as they do not reflect the correct conversion of fluid intake from ounces to cubic centimeters. Choice D is incorrect as it provides the measurement in cubic centimeters but does not account for the total fluid intake accurately.

3. A nurse is completing an incident report about a medication error that she made when she accidentally administered too much insulin to a diabetic client. All of the following are components of this documentation EXCEPT:

Correct answer: The reason for administering the wrong dose

Rationale: When completing an incident report for a medication error, it is essential to include factual information such as the type of drug involved, the amount administered, and any adverse effects on the client. However, stating the reason for administering the wrong dose should be avoided in documentation. The focus should be on reporting what happened rather than assigning blame or admitting fault. This approach helps in ensuring a thorough and accurate account of the medication error without introducing subjective elements that could complicate the investigation or resolution process. Therefore, the correct answer is 'The reason for administering the wrong dose.' Choices A, B, and D are vital components of incident report documentation, providing crucial details that help in understanding the error and its impact on the client.

4. A patient is admitted to the same-day surgery unit for a liver biopsy. Which of the following laboratory tests assesses coagulation? Select one that doesn't apply.

Correct answer: D: Hemoglobin

Rationale: The correct answer is 'Hemoglobin.' Hemoglobin levels are not indicative of coagulation status but are important for assessing oxygen-carrying capacity. Choices A, B, and C are all laboratory tests that assess coagulation. Partial thromboplastin time (PTT) and prothrombin time (PT) evaluate different aspects of the coagulation cascade, while platelet count is essential for assessing primary hemostasis. Therefore, in the context of evaluating coagulation, hemoglobin is not the appropriate choice.

5. Which nursing action promotes psychosocial development for a newborn?

Correct answer: Placing the newborn in the mother’s arms during the first hour of life

Rationale: Placing the newborn in the mother’s arms during the first hour of life is a crucial nursing action that promotes psychosocial development by fostering bonding between the newborn and the mother. This skin-to-skin contact enhances emotional attachment, facilitates breastfeeding initiation, and provides a sense of security for the newborn. It helps in regulating the newborn's temperature, heart rate, and breathing, promoting overall well-being. Washing hands before holding the newborn is essential for infection prevention and control to maintain the newborn's health and safety. Measuring the newborn using an approved length board and weighing the newborn on the same scale during hospitalization are assessments aimed at monitoring the newborn's physical growth and development, rather than directly promoting psychosocial well-being.

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