NCLEX-RN
NCLEX RN Exam Preview Answers
1. Which of the following descriptions best describes the function of the thyroid gland?
- A. The thyroid gland converts glucose into glycogen
- B. The thyroid gland secretes cortisol during times of stress
- C. The thyroid gland regulates body metabolism
- D. The thyroid gland affects skin pigmentation
Correct answer: C
Rationale: The thyroid gland is responsible for secreting thyroxine (T4) and triiodothyronine (T3), which work to regulate the metabolism of the body's cells. The primary function of the thyroid gland is to control the body's metabolic rate, affecting processes such as heart rate, temperature regulation, and energy levels. Choices A, B, and D are incorrect because the thyroid gland is not involved in converting glucose into glycogen, secreting cortisol, or affecting skin pigmentation. Instead, the primary role of the thyroid gland is to regulate the metabolism and energy balance in the body.
2. Which of the following is the correct sequence for removing personal protective equipment?
- A. Remove gown, gloves, shoe covers, mask
- B. Remove mask, gloves, gown, shoe covers
- C. Remove gloves, gown, mask, shoe covers
- D. Remove shoe covers, mask, gloves, gown
Correct answer: C
Rationale: The correct sequence for removing personal protective equipment is crucial to prevent contamination. When exiting a surgical or aseptic situation, the proper sequence is to first remove gloves, followed by the gown, mask, and finally shoe covers. This order ensures that potentially contaminated items are removed first, minimizing the risk of exposure. Choice A, 'Remove gown, gloves, shoe covers, mask,' is incorrect as gloves should be removed before the gown. Choice B, 'Remove mask, gloves, gown, shoe covers,' is incorrect as gloves should be removed first. Choice D, 'Remove shoe covers, mask, gloves, gown,' is incorrect as gloves should be the first item removed to prevent contamination.
3. Which of these specific measurements is the best index of a child's general health?
- A. Body mass index
- B. Height and weight
- C. Head circumference
- D. Chest circumference
Correct answer: B
Rationale: Height and weight are the most accurate measurements to assess a child's general health. These measurements reflect the physical growth and development of the child, indicating overall health status. Choices C and D, head circumference and chest circumference, are important measurements for specific assessments but do not provide as comprehensive an overview of general health as height and weight. Body mass index (BMI) is a calculation based on height and weight, making height and weight more direct and primary indicators of a child's health compared to BMI.
4. A client has fallen asleep in his bed in the hospital. His heart rate is 65 bpm, his muscles are relaxed, and he is difficult to arouse. Which stage of the sleep cycle is this client experiencing?
- A. Stage 1
- B. Stage 2
- C. Stage 3
- D. Stage 4
Correct answer: C
Rationale: The client in this scenario is experiencing stage 3 of the sleep cycle. In stage 3, the individual has moved into deeper stages of sleep, making it difficult to arouse. Characteristics of stage 3 include relaxed muscles, a decrease in vital signs, and being very still. Stage 3 is a phase of non-REM sleep where the client progresses towards REM sleep and vivid dreams. Choices A, B, and D are incorrect. Stage 1 is characterized by light sleep, stage 2 is a slightly deeper sleep with sleep spindles and K-complexes, and stage 4 is the deepest stage of sleep with the slowest brain waves.
5. A patient is diagnosed with essential hypertension. Which of the following blood pressures would you expect to see in this patient prior to taking medications for the condition?
- A. 142/92
- B. 118/72
- C. 120/80
- D. 138/88
Correct answer: A
Rationale: Before starting medications for essential hypertension, a patient would typically present with a blood pressure reading equal to or greater than 140/90. This indicates high blood pressure and is characteristic of essential hypertension. Choice A, 142/92, falls within this range, making it the correct answer. Choices B (118/72), C (120/80), and D (138/88) all have blood pressure readings that are within the normal range and would not typically be expected in a patient diagnosed with essential hypertension. Therefore, choices B, C, and D are incorrect as they do not align with the elevated blood pressure levels seen in essential hypertension.
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