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30 Cards in this Set
- Front
- Back
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What are the stages of Lung Development
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Glandular, Pseudoglandular, Canalicular, Saccular (Terminal Sac Period), Alveolar
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Glandular Phase
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1 to 16 weeks
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Buds of lung begin to develop
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3 weeks
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Cartilage develop
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4 weeks
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Pseudoglandular Phase
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5 to 16 weeks
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Tracheal Rings develop
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7 weeks
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Vocal Cords develop
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8 weeks
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Canalicular Phase
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16 to 24 weeks
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Respiratory bronchioles, cartilages, glands and cilia develop
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16 weeks
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Gas exchange occur
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24 weeks (Canalicular Phase)
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Meconium can be seen
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16 weeks
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Extra Uterine Life possible
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24 to 36 weeks (Terminal Sac Phase)
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Surfactant begins develop
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24 - 36 weeks (Terminal Sac Phase)
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Alveolar Phase
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36 weeks to term birth
(aveoli mature) |
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How many umbilical veins
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1
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How many umbilical arteries
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2
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How much blood gas goes to the lungs in fetal circulation
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10%
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O2 rich blood supplies the __________ by way of the _______________
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Heart, Coronary Circulation
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PVR (Pulmonary Vascular Resistance) is
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HIGH
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Lungs are full of fluid and do not have gas exchange in
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Fetal Life
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How pressure is needed to open the lung on the first breath
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-60-80 cmH20
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How is fetal lung fluid removed from the lung
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(1) During vaginal delivery 1/3 squeezed out (2) absorp into pulmonary capillaries (3) clearance by pulmonary lymphatic system
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What happens during the transition from fetal circulation
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Physiologic Closure of the Foramen Ovale (Pressure in the RA and LA equal, the flap closes flows)
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What is PROM?
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Premature Rupture of Membrane
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What maternal diseases cause hight risk pregnancies?
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Hypertension/Toxemia
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What is pre-eclampsia?
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Recognized 3rd trimester...PIH (pregnancy induced hypertension), Generalized edema, Proteinuria (protein in urine)
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What is the main drug use to treat pre-eclampsia?
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Magnesium Sulfate
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What is considered "premature"
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before 37 weeks
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What is "post mature?
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after 42 weeks
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What is IUGR?
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Intrauterine growth retardartion (small for gestation age and hypoxic in utero)
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