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Samenvatting uitgebreide mindmaps gynaecologie h2-10

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Samenvatting van 9 pagina's voor het vak Problemen van borst en urogenitaal stelsel aan de UGent

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Stimuleert aromatase in
granulosacellen → omzetting
androgenen in oestrogenen.

Oestrogenen stimuleren proliferatie
granulosacellen.
FSH (follikelsti
Verhogen FSH-receptorvorming.

Folliculaire maturatie: inductie LH-
receptoren.

Stimuleert in proliferatieve fase
androgeenproductie in thecacellen.

Androgenen → oestrogenen o.i.v.
FSH. LH (lute

LH-receptoren → eicelmaturatie,
ovulatie, corpus luteumvorming.


Peptide (10 aminozuren)
geproduceerd in nucleus arcuatus.

Via portale vaatstelsel naar hypofyse. Gn

Variaties in frequentie/amplitude →
wisselende FSH/LH-productie.

Negatieve feedback door oestradiol,
progesteron, LH, FSH, en GnRH zelf.

Pulsatiele LH-secretie weerspiegelt
GnRH-secretie. Feedbackmechanism

FSH niet betrouwbaar meetbaar door
lange halfwaardetijd.

Initieel flare-up met FSH en LH-piek.
Agonisten:
Chronische toediening →
desensitisatie GnRH-receptoren.
GnRH-analog
Competitieve inhibitie van GnRH-
receptoren.
Antagonisten:

, LH <3 U/L, LH < FSH, E2 <30, laag
IGF-I, T3/T4 laag, cortisol↑, leptine↓
Hypogonadotrope amenorroe zonder
prolactine
Sheehan of primair hypothalamisch
defect → LH/FSH <0.1 U/L

Clomifeencitraat 50-100 mg →
stimuleert ovulatie via E2-
antagonisme Zwangerschapswens

2-4 metingen binnen uur, nuchter ‘s
morgens

PEG-test → uitsluiten
macroprolactinemie
Hyperprolactinemie bevestigen
MR sella turcica bij uitsluiting
secundaire oorzaken

Macroadenoom → groeihormoon + 6. Specifieke evaluaties
IGF-I meting

Hyperandrogenisme +
anorexia/obesitas → glucose,
insuline, lipiden, OGTT

17-OHP > 6 nmol/L → ACTH-test Verhoogde androgenen

17-OHP > 30-36 nmol/L na ACTH →
genotypering CYP21

FSH >30 U/L

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Uploaded on
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Number of pages
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Written in
2024/2025
Type
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