NCLEX-RN
NCLEX RN Exam Preview Answers
1. The healthcare provider is reviewing theories of illness. The germ theory, which states that microscopic organisms such as bacteria and viruses are responsible for specific disease conditions, is a basic belief of which theory of illness?
- A. Holistic
- B. Biomedical
- C. Naturalistic
- D. Magicoreligious
Correct answer: B
Rationale: The correct answer is B: Biomedical. Among the biomedical explanations for disease is the germ theory, which states that microscopic organisms such as bacteria and viruses are responsible for specific disease conditions. The naturalistic or holistic perspective holds that the forces of nature must be kept in natural balance. The magicoreligious perspective holds that supernatural forces dominate and cause illness or health. Therefore, options A, C, and D are incorrect as they do not align with the germ theory explanation provided in the question.
2.
- A. 420 cc intake, 250 cc output
- B. 300 cc intake, 250 cc output
- C. 550 cc intake, 550 cc output
- D. 300 cc intake, 550 cc output
Correct answer: A
Rationale:
3. A urine pregnancy test:
- A. May be negative even if a blood pregnancy test is positive.
- B. Is positive only during the first trimester of pregnancy.
- C. Will be negative if the amount of LH isn't enough to meet or exceed the sensitivity of the testing device.
- D. All of the above.
Correct answer: A
Rationale: A urine pregnancy test detects HCG in a pregnant woman's urine. Blood levels of HCG are usually higher and register earlier than HCG levels in the urine. Choice A is correct because urine pregnancy tests may be negative even if a blood pregnancy test is positive due to the differences in HCG levels in blood and urine. Choice B is incorrect because a urine pregnancy test can be positive throughout pregnancy, not just in the first trimester. Choice C is incorrect because LH (luteinizing hormone) is not the hormone detected in a pregnancy test; it is HCG (human chorionic gonadotropin). Choice D is incorrect because not all the statements provided are true.
4. Which of the following may represent an upper airway obstruction?
- A. Retractions
- B. Elongated expiratory phase
- C. Stridor
- D. Expiratory wheezing
Correct answer: C
Rationale: Stridor is the sound produced by turbulent airflow through a partially obstructed upper airway. It is a classic sign of upper airway obstruction. While an elongated expiratory phase may indicate lower airway obstruction, stridor specifically points to an upper airway issue. Retractions are also often seen in upper airway obstruction due to the increased effort of breathing. Expiratory wheezing, on the other hand, is more indicative of lower airway conditions such as asthma or chronic obstructive pulmonary disease (COPD).
5. The Atlas and the Axis are:
- A. found in the vertebrae.
- B. described as being cervical.
- C. the first two bones that form the column for the spine on the superior aspect.
- D. All of the above.
Correct answer: D
Rationale: The Atlas and the Axis are the first two cervical vertebrae, designated as C1 and C2. The Atlas (C1) supports the skull, while the Axis (C2) allows for rotation of the skull. Therefore, all the statements in choices A, B, and C are correct, making 'All of the above' the correct answer. Choice A is correct as the Atlas and Axis are indeed found in the vertebrae. Choice B is correct as they are the first two cervical vertebrae. Choice C is correct as these bones form the superior aspect of the spine.
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