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Beroeps 4 - samenvatting Van de Broek

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Deze samenvatting is een goede voorbereiding voor het mondeling examen van Van de Broek en Faes. Het is een kort, volledig document waar ik in 1ste zit een mooi cijfer mee behaalde.

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Fysiologie
1. Normale zwangerschapsduur
280 dagen, 40 weken, 10 maanmaanden Prematuur: <37 weken Serotien: >42
weken
Neonaat: eerste 28 levensdagen

2. Groei en ontwikkeling van de long (minder goed bij sectio/stuit)
1. Embryonale periode (3 weken – 6 weken)
24d: °primitieve long als ventrale knop uit voordarm
26-28 d: splitsing van ventrale knop in 2 bronchustakken

2. Pseudoglandulaire periode (6 weken – 17 weken)
6 weken: °segmentaire bronchi bedekt met columnair epitheel
16 weken: °respiratoire bronchiolen bedekt met kubisch epitheel (type II)

3. Canaliculaire periode (17 weken – 24 weken)
°primitieve pulmonaire acinus bekleed met kubisch epitheel (type II)
proliferatie van microcirculatie
capillairen dichter tegen luchtwegepitheel, afvlakken van epitheelcellen (type I)

4. Terminal sac periode (24 weken – 40 weken)
24 weken: respiratoire acinus ° tot sacculi met type I cellen
25-26 weken: contact tss respiratoir epitheel met capilair netwerk:
sacculi zorgen voor gasuitwisseling
24-29 weken: °surfactantproductie
32-36 weken: verhoogde surfactantproductie
34-36 weken: mature alveolen
40 weken: toename hoeveelheid en grootte alveolen (tss 18 mnd en 4 j volledig)

AH op gang – een multifactorieel gebeuren:
 Negatieve druk bij bevalling (borstkassamendrukking) (~sectio)
 Verandering van bloedgaswaarden (daling pO2, pH en stijging pCO2)
 Plotse afkoeling bij geboorte (omgevingstemperatuur)
 Vocht wordt geresorbeerd in bloedvaten en lymfestelsel (~stuitligging)

Waarom positief dat kind huilt?
Vocht uit de longen wordt vlotter geresorbeerd in de bloedbanen en het lymfestelsel.

3. Bloedsomloop




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Uploaded on
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Number of pages
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Written in
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SUMMARY

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