HEP B Flashcards

1
Q

Que es?

A

HepADNavirus con genoma bicatenario.
10 genotipos a-j
*
VHB cronica + replicación viral= Cirrosis y carcinoma hepatico.

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2
Q

Periodo de incubcion

A

6 semanas a 6 meses.

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3
Q

Transmisión

A

Inoculación de sangre, contacto sexual (semen, secrecion vaginal y saliva), jeringas (drogas IV)

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4
Q

FR

A

Varones

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5
Q

Año de primer vacuna

A

1992

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6
Q

Clinica

A

Asintomatica sn ictericia = fulminante
Fiebre de poca intensidad, Disminucion frecuencia desaparecen y da ictericia.

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7
Q

VHB aguda

A

Cede: 2-3 semanas
Recuperación completa 16 semanas.

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8
Q

Dx

A

Perfil hepático= Aminotransferasas altas. Bili y fosfatasa alcalina.
Serología (GS)

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9
Q

Prevencion

A

Aislamiento estricto
Lavado de manos
Uso de condon
Inmunoprofilaxis de RN cuando el DNA en suero materno sea >200,000 = a vacuna e IG primeras 24 hrs.
*Px con VHB aguda no requieren tx antiviral.

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10
Q

Tx

A

Entecavir 0.5mg + Tenofovir 300mg dia
Lamivudina (3tc)
Adefovir (Px resistentes a lamivudina)
Tenofovir disoproxilofumarato igual de efectivo en coinfeccion con VIH
Entecavir (resistentes a lamivudina)
Telbivudina (supresion viral normaliza ALT)
INF pegi alfa DU semanal 180msg via subcutanea x 48 semanas.

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11
Q

Pronostico

A

Recuperación clinica de 3-6 meses.
1-2% desarrollan forma crónica
40% de VHB cronica desarrollan cirrosis.

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12
Q

Hospitalización

A

Encefalopatía
INR >1.6
Falla en hidratación del Px

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13
Q

Cuando es crónica?

A

> 6 meses con serología especifica.

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14
Q

Cuando es aguda?

A

<6 meses

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