Question

The nurse provides care for a neonate born two hours ago. Which occurrence initiates the charges that take place in the neonate's circulatory system after birth?

a. the space constraints of the uterus are removed
b. the newborn begins pulmonary ventilation
c. the newborn is exposed to excessive sensory stimuli
d. the ambient temperature of the newborn is reduced

Answer 1

The initiation of a newborn's circulatory system changes after birth is triggered by the newborn's first breath.

Step-by-step explanation:

The changes that take place in a neonate's circulatory system after birth are initiated by the newborn's first breath. This critical action inflates the lungs, which decreases blood pressure in the pulmonary system and stimulates the closing of fetal circulatory shunts such as the foramen ovale and the ductus arteriosus, effectively reconfiguring blood flow to ensure it passes through the lungs for oxygenation. This essential transition from fetal to neonatal circulation allows the neonate to adapt to life outside the womb.