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Unit 1
Fetal Development
Question | Answer |
---|---|
PaO2 in umbilical vein | 30 - 43 mm Hg |
Highest O2 Saturation in Fetal Circulation | Umbilical Vein |
Umbilical Cord has how many veins and arteries | 2 arteries and 1 vein |
Child will develop alveoli until what age | 8 years |
heart development begins at ________ and is complete at _________ | begins = 21 days (gestational age) complete = 8 weeks (gestational age) |
Lung bud appears at _____________ | 24 - 26 days (gestational age) |
Surfactant begins to arise at ___________ | 24 - 26 weeks (GW) |
True or False Pulmonary Resistance > Systemic Resistance | True |
Number of Alveoli at Birth | 20 to 150 million |
True or False Fetal Hemoglobin has decreased affinity for Oxygen (compared to an adult) | False Fetal Hgb has increased affinity for O2 and so left shift on oxyhemoglobin dissociation curve. |
Main reason for drawing umbilical cord blood is to determine A. if the infant should be admitted to NICU B. the impact of labor and delivery stress on the infant C. appropriate therapy D. if the infant needs a blood transfusion | B. determine the impact of labor and delivery stress on the infant |
What portion of fetal blood flow actually perfuses the lung? | 10 % |
The L/S ratio is is used to: A. estimate volume of amniotic fluid B. confirm gestational age C. indicate fetal lung maturity D. determine presence of infection | C. Indicate fetal lung maturity. |
Drugs that may be used to stop labor | salbutamol magnesium sulfate ritodrine terbutaline indomethacin nifedipine |
what is the initial stage of lung development called? | Embryonic |
Normal Fetal Heart Range | 120 - 160 bpm |
Target PaO2 for premature infant | 60 - 80 mmHg |