NCLEX-RN
NCLEX RN Exam Preview Answers
1. While auscultating heart sounds, the nurse hears a murmur. Which of these instruments would be used to assess this murmur?
- A. Electrocardiogram
- B. Bell of the stethoscope
- C. Diaphragm of the stethoscope
- D. Palpation with the nurse's palm of the hand
Correct answer: B
Rationale: The correct instrument to assess a murmur while auscultating heart sounds is the bell of the stethoscope. An electrocardiogram is used to measure the heart's electrical activity, not to assess murmurs. Palpation with the nurse's palm of the hand is a method to assess pulses or textures, not heart murmurs. The diaphragm of the stethoscope is typically used for high-pitched sounds like breath, bowel, and normal heart sounds, whereas the bell is more suitable for soft, low-pitched sounds such as murmurs or extra heart sounds.
2. Which of the following is one of the three smallest bones in the body?
- A. Vomer
- B. Distal phalanx of the small toe
- C. Stapes
- D. Coccyx
Correct answer: C
Rationale: The stapes, along with the malleus and incus, are the three smallest bones in the human body. These bones are located in the inner ear and play a crucial role in hearing. The vomer is a bone in the nasal cavity and is not one of the smallest bones. The distal phalanx of the small toe is relatively larger and not among the smallest bones. The coccyx, also known as the tailbone, is not one of the smallest bones in the body.
3. What is the most useful patient position for proctologic exams?
- A. Trendelenburg
- B. Semi-Fowler's
- C. Full Fowler's
- D. Jack Knife
Correct answer: D
Rationale: The Jack Knife position is the most useful for proctologic exams as it allows the patient to lie face down while keeping the buttocks elevated, providing optimal access for the examination. The Trendelenburg position, characterized by the body being laid flat with the feet higher than the head, is not suitable for proctologic exams. Semi-Fowler's and Full Fowler's positions are typically utilized for respiratory or cardiovascular conditions and are not ideal for proctologic examinations due to their lack of optimal access to the perianal area.
4. Which vacutainer tubes should be used when a requisition calls for blood to be drawn for an H&H and glucose test?
- A. One light blue, one red
- B. Two lavenders
- C. One lavender, one grey
- D. One green, one red
Correct answer: D
Rationale: The correct answer is 'One green, one red.' An H&H test involves hemoglobin and hematocrit, which are components of a complete blood count and are typically drawn in a lavender tube. On the other hand, blood for glucose testing is collected in grey tubes. Therefore, when drawing blood for both an H&H and glucose test, one green tube for glucose and one red tube for H&H should be used. The other choices are incorrect because light blue tubes are used for coagulation studies, lavender tubes are for complete blood counts, and green tubes are for chemistry tests like glucose, while grey tubes are specifically for glucose testing.
5. You are ready to give your resident a complete bed bath. The temperature of this bath water should be which of the following?
- A. Cooler than a tub bath.
- B. Hotter than a tub bath.
- C. About 106 degrees.
- D. Over 120 degrees.
Correct answer: C
Rationale: The correct temperature for a bed bath water should be about 106 degrees. This temperature is considered safe and comfortable for residents. Using a bath thermometer is essential to ensure the water is not too hot, as hot water can cause burns. On the other hand, water that is too cool can lead to discomfort, shivering, and chilling. Options A, B, and D are incorrect because cooler water may cause discomfort and shivering, hotter water can lead to burns, and water over 120 degrees is considered too hot and risky for a resident's skin.
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