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. A new staff nurse completes orientation to the psychiatric unit. This nurse will expect to ask an advanced practice nurse to perform which action for patients?

Correct answer: C

Rationale: Prescriptive privileges are granted to Master's-prepared nurse practitioners who have taken special courses on prescribing medications. The nurse prepared at the basic level performs mental health assessments, establishes relationships, and provides individualized care planning. In this scenario, the new staff nurse would ask the advanced practice nurse to prescribe psychotropic medications, as this is within their scope of practice and expertise. Establishing therapeutic relationships, performing mental health assessments, and individualizing care plans are typically responsibilities of staff nurses at the basic level, not advanced practice nurses.

3. A patient's body temperature has varied over the last 24 hours from 97.6 degrees F in the morning to 99 degrees F in the evening. The patient is worried that this change in temperature may indicate the beginning of a fever. Which of the following BEST explains this phenomenon?

Correct answer: B

Rationale: The patient is experiencing changes related to a diurnal rhythm. Diurnal rhythm is the phenomenon of body temperature fluctuating depending on the time of day. Temperatures taken in the morning are typically lower than those taken throughout the rest of the day. Choice A is incorrect because a single elevated temperature reading in the evening does not definitively indicate a fever. Choice C is incorrect as there is no indication of incorrect temperature measurement. Choice D is incorrect as the temperature changes are not related to monthly hormones but rather to the body's natural daily rhythm.

4. A small fire has erupted in a wastebasket in the client waiting room. Which of the following is the first action of the nurse?

Correct answer: C

Rationale: When a fire starts in a healthcare setting, the first action of the nurse is to move clients and anyone who may be in danger to a safe location. Ensuring the safety of clients is the top priority during emergencies. While using a fire extinguisher could be a subsequent step to contain the fire, the immediate focus should be on evacuating individuals from harm's way. Calling 9-1-1 is important, but moving clients to safety should be the nurse's initial response. Throwing water on the fire may not be effective or safe, as it can exacerbate some types of fires.

5. Which of these is a correctly stated outcome goal written by the nurse?

Correct answer: A

Rationale: Outcome goals should be SMART, i.e., Specific, Measurable, Appropriate, Realistic, and Timely. Option A is the only outcome that has a specific behavior (walks daily), with measurable performance criteria (2 miles), and a time estimate for goal attainment (by March 19). Option B lacks specificity in terms of what 'understand how to give insulin' entails, and the timeline is vague ('by discharge'). Option C is not measurable or specific about what 'regain their former state of health' means. Option D does not provide a specific behavior or measurable criteria for 'desired mobility,' and the timeline is the only element that is time-bound.

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