NCLEX-RN
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: B
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. Which gland of the endocrine system secretes a hormone that assists with the sleep/wake cycle?
- A. Pituitary
- B. Pineal
- C. Pancreas
- D. Hypothalamus
Correct answer: B
Rationale: The correct answer is the Pineal gland. The Pineal gland, located in the brain, secretes melatonin, which plays a crucial role in regulating the sleep/wake cycle in response to exposure to light. The Pituitary gland (Choice A) secretes various hormones but not specifically related to the sleep/wake cycle. The Pancreas (Choice C) secretes insulin and digestive enzymes, not hormones related to the sleep/wake cycle. The Hypothalamus (Choice D) is involved in regulating many bodily functions, including hormone secretion, but it does not directly secrete the hormone that regulates the sleep/wake cycle.
3. The client reports nausea and constipation. Which of the following would be the priority nursing action?
- A. Collect a stool sample
- B. Complete an abdominal assessment
- C. Administer an anti-nausea medication
- D. Notify the physician
Correct answer: B
Rationale: The priority nursing action when a client reports symptoms like nausea and constipation is to complete an abdominal assessment. Assessment is crucial as it involves the systematic collection of data to understand the client's condition. By assessing the abdomen, the nurse can gather essential information to make a nursing diagnosis and develop a care plan. Collecting a stool sample (Choice A) may be necessary but comes after the assessment to confirm findings. Administering an anti-nausea medication (Choice C) addresses symptoms but does not address the underlying cause without a thorough assessment. Notifying the physician (Choice D) should come after the assessment to provide a complete picture of the client's condition.
4. Rales and rhonchi are frequently noted during an examination of lung sounds. What is the difference between the two?
- A. Rales are louder.
- B. Rhonchi are noted only in infants.
- C. Rales occur on inspiration, rhonchi on expiration.
- D. Rales are noted only in infants.
Correct answer: C
Rationale: The correct answer is that rales occur on inspiration, while rhonchi occur on expiration. Rales are typically heard during inhalation when there is fluid in the alveoli or air passages. Rhonchi, on the other hand, are caused by air passing through obstructed airways during exhalation due to secretions in the respiratory tract. Choice A is incorrect because the loudness of the sounds is not the primary distinguishing factor between rales and rhonchi. Choice B is incorrect as rhonchi can be heard in individuals beyond infancy. Choice D is incorrect as rales can be present in patients of various age groups, not just infants.
5. The nurse supervises unlicensed assistive personnel (UAP) who are providing care for a patient with right lower lobe pneumonia. The nurse should intervene if which action by UAP is observed?
- A. UAP splint the patient's chest during coughing.
- B. UAP assist the patient to ambulate to the bathroom.
- C. UAP help the patient to a bedside chair for meals.
- D. UAP lower the head of the patient's bed to 15 degrees.
Correct answer: D
Rationale: The correct action for the nurse to intervene in is when the UAP lowers the head of the patient's bed to 15 degrees. This position can decrease ventilation in a patient with pneumonia, potentially worsening their condition. Choices B and C involve assisting the patient with activities of daily living and promoting mobility, which are appropriate for the patient's care. Choice A, splinting the patient's chest during coughing, can help the patient manage coughing effectively, which is also appropriate for a patient with pneumonia.
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