Congenitale bijnierschorshyperplasie Flashcards

1
Q

PF congenitale bijnierschorshyperplasie?

A

Autosomaal recessief defect in enzymes die verantwoordelijk zijn voor cortisol productie –> lage cortisol –> stijging ACTH –> Adrenale hyperplasie en stijging in synthese van adresnel precursor steroïden

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2
Q

Welke zijn de subtypes van congenitale bijnierschorshyperplasie?

A
  • 21-beta hydroxylase (! 95%)
  • 11-beta hydroxylase
  • 17 alfa hydroxylase
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3
Q

Kliniek congenitale bijnierschorshyperplasie?

A
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4
Q

BO congenitale bijnierschorshyperplasie?

A
  • Screening = meten van 17 hydroxyprogesteron
  • 11-deoxycorticosterone
  • Corticosterone
  • Natrium
  • Kalium
  • Zuur-base verstooring
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5
Q

Behandeling congenitale bijnierschorshyperplasie?

A

General approach: Gucocorticoid replacement therapy

Specific treatment
- 21β-hydroxylase deficiency: lifelong fludrocortisone therapy (aldosterone substitution)

  • 11β-hydroxylase deficiency: Spironolactone to block mineralocorticoid receptors
  • 17α-hydroxylase deficiency:
  • -> Spironolactone to block mineralocorticoid receptors
  • -> Estrogen replacement therapy for female genotype
  • Salt-wasting CAH: Fluid resuscitation
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6
Q

Welk onderscheid kan er gemaakt worden bij 21beta-hydroxylase deficiëntie?

A

Klassiek type (ernstige enzym deficientie):

  • Salt wasting type (70%)
  • Viriliserend type (30%)

Niet-klassieke vorm (geen salt wasting)

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7
Q

Kliniek van salt wasting type CAH?

A
  • 7-14 dagen na geboorte: FTT, dehydratatie, braken en shock
  • Hyponatriemische, hyperkalemische dehydratatie en hypotensie

= LEVENSBEDREIGEND

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