NCLEX-RN
NCLEX RN Exam Preview Answers
1. What does an individual who believes in the magicoreligious theory of illness and disease think is the cause of illness?
- A. Germs and viruses
- B. Supernatural forces
- C. Eating imbalanced (hot/cold) foods
- D. Imbalance within his or her spiritual nature
Correct answer: B
Rationale: Individuals who adhere to the magicoreligious theory of illness and disease attribute the cause of illness to supernatural forces. In this perspective, the world is perceived as governed by supernatural forces that influence the well-being of individuals. The belief is that these forces can bring about both good and evil outcomes. Choices A, C, and D are incorrect. Germs and viruses are associated with the biomedical theory of illness. Eating imbalanced hot or cold foods is linked to the yin/yang naturalist theory. Imbalance within one's spiritual nature is not a recognized cause of illness in any of the established theories of illness.
2. Which of the following statements best describes substance P?
- A. Substance P decreases a client's sensitivity to pain
- B. Substance P levels are drawn before administration of narcotic analgesics
- C. Substance P is found in the brain and is responsible for pain control and management of depression
- D. Substance P is found in the dorsal horn of the spinal column
Correct answer: D
Rationale: Substance P is a neurotransmitter found in the brain and the dorsal horn of the spinal column, not just in the brain. It is associated with pain transmission and modulation. Substance P is known to cause inflammation, edema, and pain. While it plays a role in pain perception, it does not decrease a client's sensitivity to pain (Choice A), nor are its levels typically drawn before administering narcotic analgesics (Choice B). Although substance P is involved in pain control, it is not responsible for managing depression (Choice C). Therefore, the correct statement is that substance P is found in the dorsal horn of the spinal column.
3. The healthcare professional is preparing to measure the length, weight, chest, and head circumference of a 6-month-old infant. Which measurement technique is correct?
- A. Measuring the infant's length using a tape measure
- B. Weighing the infant on an electronic standing scale
- C. Measuring the chest circumference at the nipple line with a tape measure
- D. Measuring the head circumference by wrapping the tape measure around the head
Correct answer: C
Rationale: For accurate measurements, specific techniques are required for different parameters in infants. Measuring the chest circumference involves encircling the chest at the nipple line. Length should be measured on a horizontal measuring board. Weight should be measured using a platform-type balance scale. Head circumference measurement entails ensuring the tape is aligned at the eyebrows and prominent frontal and occipital bones for the widest span. Therefore, the correct technique for measuring the chest circumference is at the nipple line with a tape measure. The other options are incorrect because length should be measured on a horizontal board, weight should be measured on a balance scale, and head circumference should be measured around the head, not over the nose and cheekbones.
4. 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.
5. What does preload refer to?
- A. The volume of blood entering the left side of the heart
- B. The volume of blood entering the right side of the heart
- C. The pressure in the venous system that the heart must overcome to pump the blood
- D. The pressure in the arterial system that the heart must overcome to pump the blood
Correct answer: B
Rationale: Preload refers to the volume of blood that enters the right side of the heart. This volume stretches the fibers in the heart before contraction. Preload is an essential factor in determining the force of ventricular contraction. Choices A, C, and D are incorrect. Choice A is incorrect because preload is specifically related to the volume of blood entering the right side of the heart. Choices C and D are incorrect as they refer to afterload, which is the pressure that the heart must overcome to pump blood out of the ventricles into the systemic or pulmonary circulation.
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