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NCLEX RN Exam Preview Answers
1. The instructor is teaching a class on basic assessment skills. Which of the following statements is true regarding the stethoscope and its use?
- A. Slope of the earpieces should point forward toward the examiner's nose.
- B. It blocks out extraneous room noise but does not magnify sound.
- C. The tubing length should be 14 to 18 inches to prevent sound distortion.
- D. Both fit and quality of the stethoscope are important.
Correct answer: It blocks out extraneous room noise but does not magnify sound.
Rationale: The stethoscope does not magnify sound but effectively blocks out extraneous room noises. The correct orientation of the earpieces is with the slope pointing forward toward the examiner's nose, not posteriorly. The tubing length of a stethoscope should ideally be between 14 to 18 inches (36 to 46 cm) to avoid sound distortion. Using tubing longer than this range can distort sound. Both the fit and quality of the stethoscope are crucial for accurate auscultation and assessment, highlighting their significance in clinical practice. Therefore, the correct answer is that the stethoscope blocks out extraneous room noise but does not magnify sound.
2. The nurse is caring for a 2-year-old who is being treated with chelation therapy, calcium disodium edetate, for lead poisoning. The nurse should be alert for which of the following side effects?
- A. Neurotoxicity
- B. Hepatomegaly
- C. Nephrotoxicity
- D. Ototoxicity
Correct answer: Nephrotoxicity
Rationale: The correct answer is nephrotoxicity. Calcium disodium edetate, used in chelation therapy for lead poisoning, can lead to kidney toxicity. This is an important side effect to monitor in patients undergoing this treatment. Choices A, B, and D are incorrect. Neurotoxicity, hepatomegaly, and ototoxicity are not typically associated with calcium disodium edetate therapy for lead poisoning.
3. The nurse is caring for a 10-year-old on admission to the burn unit. One assessment parameter that will indicate that the child has adequate fluid replacement is:
- A. Urinary output of 30 ml per hour
- B. No complaints of thirst
- C. Increased hematocrit
- D. Good skin turgor around burn
Correct answer: Urinary output of 30 ml per hour
Rationale: For a child of this age, this is adequate output, yet does not suggest overload. Disruption of sodium-ATPase activity presumably causes an intracellular sodium shift which contributes to hypovolemia and cellular edema. Heat injury also initiates the release of inflammatory and vasoactive mediators. These mediators are responsible for local vasoconstriction, systemic vasodilation, and increased transcapillary permeability. Increase in transcapillary permeability results in a rapid transfer of water, inorganic solutes, and plasma proteins between the intravascular and interstitial spaces.
4. The nurse selects the best site for insertion of an IV catheter in the client's right arm. Which documentation should the nurse use to identify the placement of the IV access?
- A. Left brachial vein
- B. Right cephalic vein
- C. Dorsal side of the right wrist
- D. Right upper extremity
Correct answer: Right cephalic vein
Rationale: The correct answer is the right cephalic vein. The cephalic vein is a large and superficial vein commonly used for IV access. Documenting the specific anatomic name of the vein used for IV access, such as the cephalic vein, is essential for accurate medical records. Option A, the left brachial vein, is incorrect as the brachial vein is too deep to be accessed for IV infusion. Option C, the dorsal side of the right wrist, is not a recommended IV access site due to fragile veins and potential pain for the patient. Option D, right upper extremity, is too broad and lacks the specificity necessary for precise documentation of the IV access site.
5. Which of the following is an example of client handling equipment?
- A. Wheelchair
- B. Height-adjustable bed
- C. Shower chair
- D. Call light
Correct answer: Height-adjustable bed
Rationale: Client handling equipment is designed to reduce stress and workload on healthcare professionals who assist, turn, or lift clients, aiming to decrease the risk of injuries from improper lifting techniques. A height-adjustable bed is a prime example of client handling equipment as it allows healthcare providers to raise the client to a suitable working height, facilitating care provision. Choices A, C, and D are not examples of client handling equipment. While a wheelchair, shower chair, and call light are essential in client care settings, they are not intended to aid in handling and lifting clients.
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