NCLEX-RN
NCLEX RN Exam Preview Answers
1. What is the most important step that healthcare personnel can take to prevent the transmission of microorganisms in the hospital setting?
- A. Wear protective eyewear at all times.
- B. Wear gloves whenever in direct contact with patients.
- C. Wash hands before and after contact with each patient.
- D. Clean the stethoscope with an alcohol swab between patients.
Correct answer: C
Rationale: The most crucial step in preventing the transmission of microorganisms in the hospital setting is proper hand hygiene. Healthcare personnel should wash their hands thoroughly before and after each patient contact to reduce the risk of spreading infections. While cleaning the stethoscope with an alcohol swab between patients is recommended, it is secondary to hand hygiene. Wearing protective eyewear at all times is not necessary for routine patient care unless specifically indicated, and wearing gloves only when in direct contact with patients is important but not as critical as proper handwashing. Therefore, the correct answer is to wash hands before and after contact with each patient.
2. 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).
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. The student observes a patient with no breathing problems. Which action by the student indicates a need to review respiratory assessment skills?
- A. The student starts at the apices of the lungs and moves to the bases.
- B. The student compares breath sounds from side to side, avoiding bony areas.
- C. The student places the stethoscope over the posterior chest and listens during expiration.
- D. The student instructs the patient to breathe slowly and a little more deeply than normal through the mouth.
Correct answer: C
Rationale: The correct answer is C. Listening only during inspiration instead of both inspiration and expiration indicates a need for a review of respiratory assessment skills. During chest auscultation, it is essential to listen to at least one cycle of inspiration and expiration at each placement of the stethoscope. Instructing the patient to breathe slowly and a little deeper than normal through the mouth is a correct practice during auscultation. The correct sequence for lung auscultation is from the apices to the bases, comparing breath sounds bilaterally, avoiding bony areas. It is crucial to place the stethoscope over lung tissue rather than bony prominences to accurately assess lung sounds.
5. When should you wear gloves?
- A. preparing infant formula for a newborn baby
- B. transferring breast milk into a baby bottle
- C. knocking on a patient's door
- D. opening a patient's door
Correct answer: B
Rationale: You must wear gloves when transferring breast milk into a baby bottle because breast milk is considered a bodily fluid. It is essential to avoid direct contact to prevent contamination. When preparing infant formula, gloves are not required as formula is not a bodily fluid. Knocking on or opening a patient's door does not involve direct contact with bodily fluids, so gloves are unnecessary in those situations.
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