Nursing Elites

1. Which heart sound is produced by vibrations within the heart chambers or in the major arteries from the back-and-forth flow of blood?

• A. S1 and S2
• B. S3 and S4
• C. Murmur
• D. Physiologic splitting

Correct answer: C

Rationale: A murmur is produced by turbulent blood flow within the heart or major arteries, resulting in audible vibrations.

2. The nurse is preparing to admit a child to the hospital with a diagnosis of acute poststreptococcal glomerulonephritis. The nurse understands that the peak age at onset for this disease is what?

• A. 2 to 4 years
• B. 5 to 7 years
• C. 8 to 10 years
• D. 11 to 13 years

Correct answer: B

Rationale: The peak age for the onset of acute poststreptococcal glomerulonephritis is typically between 5 and 7 years old. This age group is most affected due to the higher incidence of streptococcal infections in school-aged children, which can lead to this renal complication.

3. Which reflex is expected to disappear by 4 months of age?

• A. Rooting reflex
• B. Moro reflex
• C. Babinski reflex
• D. Palmar grasp

Correct answer: B

Rationale: The Moro reflex, also known as the startle reflex, typically disappears by 4 months as the infant's nervous system matures. This reflex is important for assessing the development of the nervous system in newborns. The Rooting reflex (Choice A) is related to turning the head in response to cheek stimulation; the Babinski reflex (Choice C) involves the fanning of toes in response to foot stimulation; and the Palmar grasp (Choice D) is the curling of the fingers around an object placed in the infant's hand. These reflexes have different timelines for disappearance and are not typically expected to be gone by 4 months of age.

4. At which age should the nurse expect an infant to begin smiling in response to pleasurable stimuli?

• A. 1 month
• B. 2 months
• C. 3 months
• D. 4 months

Correct answer: B

Rationale: Infants typically begin to smile in response to pleasurable stimuli by 2 months, which is an early sign of social interaction and emotional development.

5. The nurse is taking vital signs on a group of assigned preschool-aged children. Which assessment finding would indicate the need for further action?

• A. Respiratory rate of 20 breaths per minute
• B. Heart rate of 89 beats per minute
• C. Heart rate of 120 beats per minute
• D. Respiratory rate of 24 breaths per minute

Correct answer: C

Rationale: A heart rate of 120 beats per minute is high for a preschool-aged child and may indicate an underlying issue that requires further assessment. A respiratory rate of 20 breaths per minute (choice A) is within the normal range for preschool children. Similarly, a heart rate of 89 beats per minute (choice B) falls within the expected range. A respiratory rate of 24 breaths per minute (choice D) is slightly elevated but may not be as concerning as a heart rate of 120 beats per minute.

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