NCLEX-PN
Nclex Exam Cram Practice Questions
1. How many temporary teeth should the nurse expect to find in a 5-year-old client's mouth?
- A. up to 10
- B. up to 15
- C. up to 20
- D. up to 32
Correct answer: C
Rationale: A 5-year-old child can have up to 20 temporary (deciduous or baby) teeth. The first tooth usually erupts by age 6 months, and the last by age 30 months. All temporary teeth are usually shed between 6 and 13 years of age. Therefore, a 5-year-old child should have up to 20 temporary teeth. The correct answer is 'up to 20.' Choices A, B, and D are incorrect because the correct number of temporary teeth in a 5-year-old child's mouth is up to 20, not 10, 15, or 32.
2. The nurse is teaching a client about sleep and gives background information on normal sleep patterns. Which of the following substances promotes sleep?
- A. serotonin
- B. cortisol
- C. alcohol
- D. narcotics
Correct answer: A
Rationale: Serotonin is a substance found in the body that promotes sleep. It plays a role in the synthesis of a hypnogenic factor that directly induces sleep. Cortisol is a stress hormone that can disrupt sleep patterns. Alcohol can disrupt REM sleep and negatively impact sleep quality. Narcotics, like alcohol, can interfere with sleep architecture and lead to poor quality sleep. Therefore, the correct answer is serotonin as it is associated with promoting sleep, while the other substances listed can have negative effects on sleep patterns.
3. The nurse is teaching a client about communicable diseases and explains that a portal of entry is:
- A. a vector.
- B. a source, like contaminated water.
- C. food.
- D. the respiratory system.
Correct answer: D
Rationale: The correct answer is 'the respiratory system.' A portal of entry is the path through which a microorganism enters the body. In the case of communicable diseases, the respiratory system can serve as a portal of entry for pathogens such as viruses or bacteria. Choices A, B, and C are incorrect. A 'vector' is an organism that transmits disease, not the entry point for pathogens. Contaminated water or food can act as sources or reservoirs of disease-causing microorganisms, not portals of entry.
4. When evaluating the lab work of a client in hepatic coma, which of the following lab tests is most important?
- A. blood urea nitrogen
- B. serum calcium
- C. serum ammonia
- D. serum creatinine
Correct answer: C
Rationale: When a client is in hepatic coma due to liver failure, the liver cannot metabolize amino acids completely, leading to elevated ammonia levels. Increased ammonia can cause brain-tissue irritation, worsening the coma. Therefore, monitoring serum ammonia levels is crucial in assessing the severity of hepatic coma. Choices A, B, and D are less relevant in the context of hepatic coma. Blood urea nitrogen primarily assesses kidney function, serum calcium levels are not directly related to hepatic coma, and serum creatinine is more indicative of kidney function rather than liver function in this scenario.
5. During the change of shift, the oncoming nurse notes a discrepancy in the number of Percocet (Oxycodone) listed and the number present in the narcotic drawer. The nurse's first action should be to:
- A. Notify the hospital pharmacist
- B. Notify the nursing supervisor
- C. Notify the Board of Nursing
- D. Notify the director of nursing
Correct answer: B
Rationale: The first action the nurse should take is to report the finding to the nursing supervisor and follow the chain of command. Notifying the nursing supervisor allows for immediate action within the facility to address the discrepancy. If it is found that the pharmacy is in error, then notifying the hospital pharmacist (Choice A) would be appropriate. Choices C and D, notifying the Board of Nursing and the director of nursing, are not the initial steps to take. These options may be necessary if theft is suspected or if the facility's internal response is inadequate. Therefore, they are incorrect answers.
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