VHC Flashcards

1
Q

VHC: virus

A

. ARN

. simple brin

. enveloppé

. 6 génotypes (1,2,3,4 en France)

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2
Q

VHC: famille

A

. flavivirus

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3
Q

VHC: cytopathogène

A

. oui

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4
Q

VHC: épidémiologie

A

. 190 millions de porteurs chroniques

. 3% de la population à une infection chronique

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5
Q

VHC: incubation

A

. variable 7-6 semaines,

. voir 2-26 semaines

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6
Q

VHC: transmission

A

. Parenteral ++

. Sexuel -> HSH, rapport pendant les règles, IST, VIH, trauma

. Périnatale -> VIH

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7
Q

VHC: FDR

A

. transfusion < 1992

. drogue IV ou nasale

. tatouage

. acupuncture

. iatrogènes

. matériel recyclable

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8
Q

VHC: infection aigue

A

. 80% asymptomatique

. guérison spontanée dans 15-20%

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9
Q

VHC: diagnostic hépatite aigue

A

. Ac anti VHC + ARN

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10
Q

VHC: manifestations extra-hépatiques

A
. cryoglobulinémie, GNMP
. vascularite
. Maladie auto-immune
. Lymphome
. Porphyrie cutanée tardive
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11
Q

VHC: forme fulminante

A

. exceptionnelle

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12
Q

VHC: hépatite chronique

A

. génotype et CV non corrélé à la fibrose

. forme chronique dans 70%

. Cirrhose 10-20% à 20 ans

. CHC 1-3% / an, au stade de fibrose

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13
Q

VHC: diagnostic chronique

A

. ARN VHC > 6 mois

. fibrose: test non invasif

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14
Q

VHC: vaccination

A

. absence de vaccination

. vaccination contre VHB recommandé

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15
Q

VHC: traitement

A

Guérison virologique à 12 semaines après arrêt de tout traitement -> réponse virologique soutenue dans > 95%

. inhibiteurs de NS5A (lédipasvir, velpatasvir, pibrentasvir)

. inhibiteurs de protéase NS3/4A (grazoprévir, voxilaprévir, glécaprévir)

. inhibiteurs de NS5B (sofosbuvir)

. le tout combiné pendant 8-12 semaines

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16
Q

VHC: possibilité de régression de la cirrhose ?

A

. oui

17
Q

VHC: particularité

A

. dépistage d’autres IST