8. Polycythaemia Vera Flashcards

1
Q

(PV)

Definition

A

chronisch myeloproliferative Erkrankung

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2
Q

(PV)

Ätiologie

A

Mutation im JAK2-Tyrosinkinase-Gen

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3
Q

(PV)

Komplikationen (2)

A

Transformation in eine AML oder eine Post-Polycythaemia-Vera-Myelofibrose

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3
Q

(PV)

Phasen (2)

A
  • chronische (polyzythämische) Phase
  • progrediente Spätphase (“Spent Phase”)
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4
Q

(PV)

chronische (polyzythämische) Phase: Symptome (3)

A
  • Blutungen
  • aquagener Pruritus (AP)
  • Hyperviskositätssymptome
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5
Q

(PV)

Hyperviskositätssymptome (3)

A
  • Plethora
  • Thrombose/Thromboembolie
  • Mikrozirkulationsstörungen
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6
Q

(PV)

progrediente Spätphase (“Spent Phase”): Symptome (2)

A
  • Verminderung der Polyglobulie
  • Erhöhung der Splenomegalie
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7
Q

(PV)

Blutbild: Befunde (3)

A
  • Leuko-, Erythro- und Thrombozytose
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8
Q

(PV)

Diagnosekriterien (3)

A
  1. Blutbild (Hb und Hämatokrit)
  2. Knochenmark (Aspirationszytologie und Histologie)
  3. Molekulargenetik
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9
Q

(PV)

Diagnosekriterien: Blutbild (2)

A
  • Männer: Hb > 16,5 g/dl oder Hämatokrit > 49%
  • Frauen: Hb > 16,0 g/dl oder Hämatokrit > 48%
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10
Q

(PV)

Diagnosekriterien: Knochenmark (2)

A
  • Steigerung der Erythropoese, Granulopoese und Megakaryopoese
  • pleomorphe Megakaryopoese
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11
Q

(PV)

Diagnosesicherung: Molekulargenetik

A

Nachweis einer JAK2-Mutation

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12
Q

(PV)

Therapie der Wahl (3)

A
  • Aderlass
  • niedrig-dosierte ASS
  • zytoreduktive Therapie
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13
Q

(PV)

zytoreduktive Therapie: Wirkstoffe (2)

A
  • Hydroxyurea

oder

  • Ropeginterferon
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14
Q

(PV)

Therapie der 2. Wahl

A

Ruxolitinib (JAK1/JAK2-Tyrosinkinase-Inhibitor)

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