A nurse is collecting data from a 6-week-old infant. Which of the following findings should the nurse expect?
Absence of Babinski reflex
Absence of Moro reflex
Closure of the posterior fontanel
Closure of the anterior fontanel
The Correct Answer is C
A. Absence of Babinski reflex: The Babinski reflex (a fanning of the toes when the sole of the foot is stroked) is normal in infants and should be present until around 12 months of age. Its absence at 6 weeks would be atypical.
B. Absence of Moro reflex: The Moro reflex (a startle response) is typically present in newborns and may begin to disappear by 3-6 months of age. Its absence at 6 weeks would be concerning and could indicate neurological issues.
C. Closure of the posterior fontanel: The posterior fontanel typically closes by 6-8 weeks of age. This is a normal finding for a 6-week-old infant.
D. Closure of the anterior fontanel: The anterior fontanel typically closes between 12 and 18 months of age, not by 6 weeks. Therefore, closure of the anterior fontanel at 6 weeks would be unusual.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Point A: Represents the third intercostal space at the right sternal border, which corresponds anatomically to the aortic valve area. This is a key auscultation site used during cardiac assessment to listen for murmurs and abnormalities related to the aortic valve. It is not used for palpation.
Point B: Fourth intercostal space at the left midclavicular line and is the correct location for palpating the point of maximal impulse (PMI) in infants and young children. In this age group, the PMI is typically found here due to the more horizontal position of the heart in the chest.
Point C: This location is at the 2nd or 3rd intercostal space, which is too high to assess the PMI in an infant. This area is used more for evaluating pulmonic valve sounds, not the apex of the heart.
Correct Answer is C
Explanation
A. Temperature: A temperature of 38.6°C (101.5°F) is elevated, but fever is a common symptom of bacterial pneumonia. It is important to monitor, but it is not the most critical finding in this case.
B. Skin condition: Hives and flushing could be signs of an allergic reaction to medication, but this is not immediately life-threatening. The nurse should report it, but the priority in this case is the oxygen saturation, which reflects the patient's respiratory status.
C. Oxygen saturation: Oxygen saturation of 93% is below the typical threshold of 95-100% and indicates mild hypoxemia. In a patient with bacterial pneumonia, low oxygen saturation signify worsening respiratory function. This requires immediate attention and reporting.
D. Lung sounds: Coarse crackles in the right lower lobe are expected in pneumonia due to lung consolidation. While it is important to monitor lung sounds, the priority is addressing the oxygen saturation level, which is directly related to the patient's ability to breathe effectively.
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