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28 Cards in this Set

  • Front
  • Back
The newborn must immediately establish what upon birth?
Pulmonary Ventilation
Surfactant
phospholipid reduces force in infants lungs, prevents lungs from collapsing
phospholipid reduces force in infants lungs, prevents lungs from collapsing
Surfactant
What are the 4 things an infant must master?
thermoregulation, metabolic homeostasis, conversion from fetal respiratory to independent breathing, closing of 3 fetal ducts for neonate circulation
When does the first breath take place?
Within a few seconds
When will the neonate be breathing on their own?
Within 30 seconds
What are the 4 stimuli which send messages to the respiratory center of the neonate's brain?
sensory
chemical
thermal
mechanical
Examples of sensory stimuli which send messages to the respiratory center of the neonate's brain?
external environment, cold, touch, light, sound, tactile drying, skin-to-skin contact
Examples of chemical stimuli which send messages to the respiratory center of the neonate's brain?
temporary hypoxia from clamping of cord causing acidosis initiating respiration
Examples of thermal stimuli which send messages to the respiratory center of the neonate's brain?
neonate's cold causes need for oxygen
Examples of mechanical stimuli which send messages to the respiratory center of the neonate's brain?
chest compression and recoil draining some fluid from lungs
functional residual capacity (FRC)
amount of air that remains in the lung after a normal expiration
amount of air that remains in the lung after a normal expiration
functional residual capacity (FRC)
Normal Newborn respiratory rate
30-60 breaths/ minute
Apnea lasting longer than how long is abnormal, normal?
Apnea longer than 20 secs is abnormal, 5-15secs is normal
What are 3 shunts which must close in order for normal circulation to occur?
ductus arteriosus
foramen ovale
ductus venosus
Where is the foramen ovale?
between the right and left atria, blood flow from right to left, shunts blood away from the lungs to the aorta
between the right and left atria, blood flow from right to left, shunts blood away from the lungs to the aorta
foramen ovale
How does the foramen ovale close?
pressure increasing on the left side greater than the right side, closing the flap,
When does the foramen ovale close?
(functionally, anatomic, permanently)
functionally closes - 1 min
anatomic closure - 2hrs
permanently closes - 3 months
Where is the ductus arteriosus?
shunts blood from the pulmonary artery to the aorta bypassing lungs
shunts blood from the pulmonary artery to the aorta bypassing lungs
ductus arteriosus
How does the ductus arteriosus close?
pulmonary arterioles dilate in response to increased aeration of the lungs causing constriction and closure
When does the ductus arteriosus close?
(functionally, anatomic)
functionally closes - 15-24 hrs
anatomic closure - 3-4 wks
What does the ductus arteriosus become after closure?
fibrosis of ductus
What is it called if the ductus arteriosus reopens? What does it cause?
patent ductus arteriosus
hypoxia and death
Where is the ductus venosus?
shunt that allows most of blood to bypass the liver and enter the inferior vena cava
shunt that allows most of blood to bypass the liver and enter the inferior vena cava
ductus venosus