Which of the following factors are age-related physical differences in infants that most increase this population's risks for developing a respiratory system dysfunction?
a. small airways and fewer alveoli
b. shape of the chest, smaller ribs
c. abdominal breathing
d. greater weight-to-height ratio
A
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A Correct. Several developmental variations increase the pediatric population's risks for acquiring a respiratory system dysfunction. Small airways, fewer alveoli, and increased chest compliance are leading factors that predispose to respiratory alterations.
B Incorrect. Among age-related physical differences in infants that most increase this population's risks for developing a respiratory system dysfunction, the shape of the chest and smaller ribs are not factors.
C Incorrect. Among age-related physical differences in infants that most increase this population's risks for developing a respiratory system dysfunction, abdominal breathing is not a factor (infants are nose breathers).
D Incorrect. Among age-related physical differences in infants that most increase this population's risks for developing a respiratory system dysfunction, their weight-to-height ratio is not a factor (alveolar surface for gas exchange is more limited in relation to height and weight).
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