Perinatal Period Flashcards
What is considered preterm gestation?
Less than 37 weeks
What is considered preterm gestation?
Less than 37 weeks
What is considered gestation?
37 to 42 weeks
What is considered post-term gestation?
> 42 weeks
What is the neonatal period?
The first 28 days of life (+ preterm time period)
What does the perinatal period include?
20 weeks GESTATION to 1 month after birth
Where is the ductus venosus?
Connects umbilical vein to inferior vena cava
What is the ductus arteriosus?
A channel of communication between the main pulmonary artery and the aorta
What is the foramen ovale?
Opening between the two atria of the fetal heart
What does the ductus venosus do?
Allows oxygenated blood directly from mom to enter circulation (bypasses liver) via inferior vena cava
What does the ductus arteriosus do?
Allows majority of blood which would enter pulmonary vasculature to bypass directly to the aorta
What happens with the shunts at birth?
Increased systemic vascular resistance
Decreased pulmonary vascular resistance
Closes shunt and eliminates shunting
What happens with the shunts at birth?
Increased systemic vascular resistance
Decreased pulmonary vascular resistance
Closes shunt and eliminates shunting
What is considered gestation?
37 to 42 weeks
What is considered post-term gestation?
> 42 weeks
What is the neonatal period?
The first 28 days of life (+ preterm time period)
What does the perinatal period include?
20 weeks GESTATION to 1 month after birth
Where is the ductus venosus?
Connects umbilical vein to inferior vena cava
What is the ductus arteriosus?
A channel of communication between the main pulmonary artery and the aorta
What is the foramen ovale?
Opening between the two atria of the fetal heart
What does the ductus venosus do?
Allows oxygenated blood directly from mom to enter circulation (bypasses liver) via inferior vena cava
What does the ductus arteriosus do?
Allows majority of blood which would enter pulmonary vasculature to bypass directly to the aorta
What does the foramen ovale do?
Allows oxygenated blood from mom which enters the right atrium to be channeled directly to left atrium and then into the left ventricle, aorta, and system
What happens with the shunts at birth?
Increased systemic vascular resistance
Decreased pulmonary vascular resistance
Closes shunt and eliminates shunting