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. When percussing over the lungs of a 4-year-old child, the nurse hears bilateral loud, long, and low tones. How should the nurse proceed?

Correct answer: D

Rationale: In pediatric patients, loud, long, and low tones heard when percussing over the lungs are normal findings. These percussion notes are characteristic of a child's lung due to its thin chest wall and increased air content. It is unnecessary to palpate for pain and tenderness, ask the child to take shallow breaths and repeat the percussion, or refer the child to a specialist. Therefore, the correct action is to consider these findings as normal for the child's age and continue with the examination.

3. For a patient who is blood type AB, which blood product can they receive?

Correct answer: C

Rationale: A patient with blood type AB has AB antigens on their red blood cells. This means they can only receive blood products that are compatible with these antigens. Choice A is incorrect because an AB patient cannot receive plasma from a type B donor due to the antibodies present in type B plasma. Choice B is incorrect because an AB patient cannot receive whole blood from a type A donor as it contains incompatible antigens. Choice C is the correct answer because an AB patient can receive packed RBCs from a type O donor. Type O donors have no A or B antigens, making their blood compatible for transfusion to recipients with any blood type. Therefore, choices A and B are incorrect, and the correct choice is C.

4. Improper placement of the hands under the rib cage when performing the Heimlich maneuver could result in:

Correct answer: B

Rationale: The xiphoid process is a small, cartilaginous extension at the inferior end of the sternum. Placing the hands improperly during the Heimlich maneuver too close to this process can result in it breaking off and potentially causing damage to internal organs. Choices A and C are incorrect because the manubrium of the sternum and the coccyx are not in the area where the hands would typically be placed during the Heimlich maneuver.

5. The nurse should wash from the ________________________ when washing a patient's eye area.

Correct answer: B

Rationale: When washing a patient's eye area, it is important to start from the inner canthus (closest to the nose) and move towards the outer canthus. This direction prevents any contaminants or debris from the outer area of the eye from moving towards the inner, more sensitive area. Choices C and D are incorrect as they pertain to the nasal passages (nares), which are not relevant when washing the eye area.

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