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Gastroenterites virais Flashcards

(15 cards)

1
Q

Diferença entre diarreia e disenteria

A

Diarreia: fezes amolecidas. Disenteria: fezes com muco ou sangue por inflamação intestinal.

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2
Q

Principais vírus entéricos

A

Rotavírus, Norovírus, Adenovírus, Astrovírus.

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3
Q

Forma de transmissão do Rotavírus

A

Fecal-oral; contato com superfícies contaminadas.

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4
Q

Fator de virulência do Rotavírus

A

NSP4 – enterotoxina que promove secreção de cloro e perda de água.

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5
Q

Classificação do Rotavírus

A

Sorotipos G e P; ex: G1P[8].

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6
Q

Características do Norovírus

A

Não envelopado, RNA fita simples positiva, alta variabilidade genética.

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7
Q

Patogênese do Norovírus

A

Dano aos enterócitos, inflamação da mucosa, encurtamento das vilosidades.

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8
Q

Características do Adenovírus

A

DNA dupla fita, não envelopado, capsídeo icosaédrico.

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9
Q

Sorotipos do Adenovírus causadores de gastroenterite

A

40 e 41.

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10
Q

Uso do Adenovírus em vacinas

A

Usado como vetor viral em vacinas como AstraZeneca, Janssen, etc.

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11
Q

Forma do Astrovírus

A

Forma de estrela com 5-6 pontas, RNA fita simples positiva.

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12
Q

Diagnóstico das gastroenterites virais

A

PCR, ELISA, testes rápidos. Nem sempre é necessário.

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13
Q

Tratamento das gastroenterites virais

A

Hidratação oral ou venosa; suporte clínico.

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14
Q

Prevenção da gastroenterite viral

A

Higiene, água tratada, vacinação (rotavírus).

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15
Q

Por que países ricos ainda têm surtos de gastroenterite viral?

A

Alta transmissibilidade, superfícies contaminadas, locais fechados (ex: cruzeiros).

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