when printing out an ekg a nurse notices that the qrs complexes are extremely small what should be the next step
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Nursing Elites

NCLEX-RN

NCLEX RN Predictor Exam

1. When printing out an EKG, a nurse notices that the QRS complexes are extremely small. What should be the next step?

Correct answer: C

Rationale: Increasing the sensitivity control to 20 mm deflection will double the sensitivity, allowing for better observation of the small QRS complexes. This step is crucial in obtaining a clearer EKG reading. Choice A is incorrect because small QRS complexes do not necessarily indicate impending cardiac arrest; it's more likely a technical issue. Choice B is not the first step to take when small QRS complexes are observed; it's important to adjust the settings first. Choice D is incorrect because decreasing the run speed to 50 is not the appropriate action for this situation; adjusting the sensitivity control is more relevant to improve the visualization of the complexes.

2. The Rule of Nines is used to:

Correct answer: A

Rationale: The Rule of Nines is used to assess the amount of body surface that has been burned. Most body areas are divided out based on 9%, with the exception of the genitalia, which is only 1%.

3. Which of the following descriptors is most appropriate to use when stating the 'problem' part of a nursing diagnosis?

Correct answer: B

Rationale: The problem part of a nursing diagnosis in the context of nursing care plans should focus on the client's response to a life process, event, or stressor. This response is what is used to identify the nursing diagnosis. 'Anxiety' is the most appropriate descriptor for the problem part of a nursing diagnosis as it reflects a psychological response that can be addressed by nursing interventions. 'Grimacing' is a physical manifestation and not the problem itself. 'Oxygenation saturation 93%' and 'Output 500 mL in 8 hours' are data points or cues that a nurse would use to formulate the nursing diagnostic statement, not the actual problem being addressed.

4. The functional health pattern assessment data states: 'Eats three meals a day and is of normal weight for height.' The nurse should draw which of the following conclusions about this data? Select all that apply.

Correct answer: B

Rationale: The assessment data provided indicates a healthy pattern of nutrition and a normal weight for height, suggesting a positive health status. This aligns with a wellness diagnosis, such as 'Potential for enhanced nutrition,' which focuses on improving health further. An actual health problem refers to a current health issue present in the client, which is not evident in this data. Collaborative health problems involve interprofessional collaboration and are not indicated based on the information provided. While a diet assessment may be needed to evaluate food quality, the initial data suggests a wellness-focused approach to care.

5. What is the correct action regarding thigh pressure when comparing it to arm pressure in an adolescent with high blood pressure?

Correct answer: C

Rationale: When blood pressure measured in the arm is significantly elevated, especially in adolescents and young adults, it is crucial to compare it with thigh pressure to assess for coarctation of the aorta. The popliteal artery, not the femoral artery, should be auscultated for the thigh pressure reading as the femoral artery is closer to the placement of the blood pressure cuff. Generally, thigh pressure is higher than arm pressure; however, if there is coarctation of the artery, arm pressures can be higher than thigh pressures. The preferred position for measuring thigh pressure is the prone position, not supine, with the knee slightly bent to facilitate accurate readings.

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