Nefrologie/ fysiologie Flashcards

1
Q

Compartimenten lichaamswater

A
intracelluleire vloeistoffen (> KCl)
extracellulaire vloeistoffen (NCl):
- interstitieel compartiment
- plasmacompartiment
- transcellulair compartiment
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2
Q

Normale diurese

A

1,5 l/dag

400 mOsm/l urine

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3
Q

Maximale diurese

A

20 l/dag

30 mOsm/l urine

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4
Q

Minimale diurese

A

0,5 L/dag

1200 mOsm/l urine

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5
Q

Cortico-medullaire osmotische gradiënt

A

actieve reabsorptie elekrolyten
impermeabele wand stijgende tak vd lis van Henle
tegenstroommechanisme

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6
Q

ADH

A

Antidiuretisch hormoon:
angine-vasopressine (V2-receptor in de verzamelbuisjes)
Doet de permeabiliteit stijgen -> hogere osmolariteit

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7
Q

Diabetes insipidus

A

Diabetes met een ADH-insufficiëntie

Medicatie: desmopressie of thiazide-diuretica

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8
Q

Functies van de nieren (6)

A
  • zuivering
  • zout- en waterbalans
  • zuur-base evenwicht
  • elektrolytenbalans
  • bloeddrukregeling RAAS
  • endocriene functie (EPO en vitamine D)
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9
Q

Glomerus

A

capillair netwerk + kapsel van Bowman

Hier wordt bloed gefilterd

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10
Q

Tubulus

A

proximale tubulus, lis van Henle en distale tubulus

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11
Q

Verzamelbuisjes

A

= ducti colligentes

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12
Q

Glomulaire filtratie

A

bloed wordt gefilterd
afhankelijk van de BD en afferente en efferente weerstand van de arteriolen
180 l/dag

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13
Q

Glomulaire filtratiesnelheid

A
GFR = Kf x Peff
Peff = Pglom - (Pnefr + Ponc)
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14
Q

Tubulaire transportmechanismen

A
  • reabsportie

- secretie

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15
Q

Klaring

A

maat voor de glomulaire filtratiesnelheid

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16
Q

Serum creatinine

A

wordt gebruikt bij onrechtstreekse meting van de nierfunctie

17
Q

Formules

A
  • Cockcroft en Gault
  • MDRD
  • CKD-EPI