The mother of a newborn asks the nurse what causes the baby to begin to breathe after delivery. What changes in the respiratory system stimulating respirations postnatally can the nurse explain to the mother? Select all that apply
a. Low oxygen levels in the infant's blood
b. Rubbing the newborn with a towel or blanket
c. Surfactant, a special lubricant in the lungs
d. Increased blood flow to the infant's lungs
e. Cold environment in the delivery room
A, B, E
Feedback
Correct A postnatal change in the respiratory system is the stimulation of
respiration by hypoxemia, hypercarbia, cold, tactile stimulation, and a
possible decrease in the concentration of prostaglandin E2.
Incorrect Surfactant in the lungs lowers surface tension and facilitates lung
expansion. It does not stimulate respirations. Pulmonary blood flow
increases after birth, but this does not stimulate respirations in the
newborn.
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