which of the following is most true about the esr test
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Nursing Elites

NCLEX-RN

NCLEX RN Predictor Exam

1. What is the MOST ACCURATE statement regarding the ESR test?

Correct answer: C

Rationale: The erythrocyte sedimentation rate (ESR) is a non-specific screening test for inflammation in the body. It is not used as a definitive diagnostic tool for specific conditions. When ESR results are abnormal, they indicate the presence of inflammation, which can be caused by various reasons. Therefore, abnormal results should be followed by additional testing to determine the underlying cause. The ESR test measures the rate at which red blood cells settle in a vertical tube over the span of one hour, and results are reported in millimeters per hour. Choice A is incorrect because ESR results are not solely diagnostic for any specific condition. Choice B is incorrect as abnormal ESR results do not directly indicate a potentially fatal illness without further investigation. Choice D is incorrect as the results are reported in millimeters per hour, not per minute.

2. Which brain structure serves as the heat-regulating center?

Correct answer: A

Rationale: The correct answer is the Hypothalamus. The hypothalamus is responsible for regulating body temperature, ensuring it stays within a narrow range. Moreover, the hypothalamus controls various essential bodily functions, such as hunger, thirst, and circadian rhythms. Choices B, C, and D are incorrect because the Pituitary Gland primarily produces and releases hormones, the Pons is involved in functions like sleep, respiration, and bladder control, and the Medulla Oblongata controls vital functions like breathing and heart rate, but not body temperature regulation.

3. A resident brings several electronic devices to a nursing home. One of the devices has a two-pronged plug. What rationale should the nurse provide when explaining why an electrical device must have a three-pronged plug?

Correct answer: A

Rationale: A three-pronged plug functions as a ground to dissipate stray electrical currents. This helps prevent electrical shocks and ensures the safety of the user. Choice B is incorrect because the number of prongs on a plug does not impact the efficient use of electricity. Choice C is incorrect because a three-pronged plug does not shut off the appliance during an electrical surge; that role is typically fulfilled by surge protectors. Choice D is incorrect as a three-pronged plug does not divide electricity among appliances in a room; it primarily serves as a safety measure to handle excess electrical currents.

4. 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: A

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.

5. What message is a patient sending when displaying the following body language: Slumped shoulders, grimace, and stiff joints?

Correct answer: A

Rationale: Body language is a powerful form of non-verbal communication that can convey various emotions. In this scenario, the patient's slumped shoulders, grimace, and stiff joints suggest a negative emotional state. Anger is the correct answer because grimacing and tense posture are commonly associated with anger. Choice B, 'Aloofness,' is incorrect as aloofness is more related to disinterest or detachment, which is not indicated by the described body language. Choice C, 'Empathy,' is incorrect as the body language described does not align with expressing understanding or compassion towards others. Choice D, 'Depression,' is incorrect as while depression can also manifest through body language, the specific cues given in the scenario lean more towards anger than depression.

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