Perinatal Period Flashcards
Pertern gestation
< 37 weeks
Term gestation
37 - 42 wks
Post-term gestation
> 42 wks
Neonatal period
First 28 days of life.
Perinatal period
from 20 wks gestation to one month after birth.
Ductus Venosus
Connects umbilical vein to inferior vena cava.
Ductus arteriosus
Channel of communication btw main pulm artery and aorta.
Foramen Ovale
Opening btw two atria or fetal heart.
What is the last system to develop in utero?
Respiratory system. Surfactant production in 3rd trimester.
What does it mean if a neonate loses weight after birth?
It is a normal loss of water weight. baby should return to birth weight by 2 wks of age.
Symmetric SGA
Early pregnancy complications
Asymmetric SGA
Implies late pregnancy complications.
Causes of LGA
Infant of diabetic mother (IDM)
Erythroblastosis fetalis
IDM
Infant of Diabetic Mother.
Need to be screened for hypoglycemia.
At 3 hrs, normal-term babies BG normalizes at 50-80
IUGR
Intrauterine Growth Restriction
RDS
Respiratory Distress Syndrome.
Results form inadequate surfactant production.
70% chance of RDS at 28-30 wks gestation
RDS Mgmt
O2 therapy, ABG’s
CPAP
Mech ventilation if needed
Artificial surfactant
Meconium aspiration syndrome (MAS)
Meconium enters amniotic fluid and is aspirated.
Common in post-maturity and fetal distress.
MAS CXR findings
Fluffy infiltrates.
Pneumothorax.
Flattened diaphragm.
MAS Mgmt
Suctioning.
Chest phyisiotherapy.
CPAP.
Abx.
Persistent Pulmonary HTN of Newborn (PPHN)
AKA persistent fetal circulation.
Pulm HTN and R to L shunting.
Sustained elevation in Pulm vascular resistance.
Transient tachypnea of the newborn (TTN)
Retained fetal lung fluid. typically happens in term infants.
CHR of perihilar streaking
Resolution occurs in 12-24 hrs
What can cause jaundice?
Any process that increases excess destruction of RBC’s or interferes with bile excretion.
Physiologic Jaundice
Neonates have increased RBC’s and increased destruction, inadequate liver clearance resulting in jaundice. Occurs in first wk of life.
