HyperCalcémie Flashcards

0
Q

2 sources calcium

A

tube digestif

os

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1
Q

Régulation Calcémie

A

PTH et vitamine D: absorption dig, élimination rénale et résorption osseuse

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2
Q

2 diagnostics ppx à évoquer devant hyperCa

A

hyperPTH primaire

md néo: K solides ou hématopathie

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3
Q

biologie 1ere intention devant hypercalcémie

A
ca total et ionisé (élimination fausse HyperCa)
PTH
phosphore sérique
EPS
calciurie 24h
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4
Q

signes cliniques HyperCa AIGUE

A
  • digestifs: nausées, vomissements et anorexie
  • neuro: tb vigilance, cognitifs, hallucination, coma
  • CV: HTA et diminution QT
  • dysfonction tubulaire: polyuro-polydypsie; dec et IRAF
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5
Q

signes cliniques hyperCa chronique

A

lithiase rénale
IRC
tb cardiovasc par dépôts calciques coronaires, valves et myocytes
sg osseux: dl diffuses

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6
Q

biologie d’une hyperPTH primaire

A

hyperCa modérée
hypophosphorémie
PTH inadapté

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7
Q

causes hyperPTH primaire

A

adénome +++

hyperplasie 4 gd: recherche atteinte tige pituitaire et pancréas dans cadre NEM

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8
Q

mécanisme hyperCa néo

A

local: relargage cytokines au niveau méta

systémique: OAF et PTHrp

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9
Q

Mdts inducteurs hyperCa

A
lithium (PTH)
hypervitaminose D exogène (intestinal)
prise ca excessive (IR)
hypervitaminose A (os)
diurétiques thiazidiques: tubulaire
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10
Q

4 autres causes hyperCa

A

endocrinienne: acromégalie, phéo, hyperT
granulomatoses (activité macrophages)
hypercalcémie familiale bénigne: hypocalciurie et hypomagnesiurie
immobilisation prolongée

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11
Q

PEC HyperCa

A
HYDRATATION
3 OU sp: 
- SSi et furosémide
- biphosphonates
- calcitonine
sévère: dialyse
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