Streptoccocus Flashcards

1
Q

Mayor actividad hemolítica, destruir eritrocitos, vueve el AGAR sangre más transparente ya que los destruye con rapidez

A

Beta hemolisis (transparente)

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2
Q

Menor actividad, no hay cambios notables, ya que no son capaces de destruir a los eritrocitos

A

Gamma hemolisis (rojo)

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3
Q

Actividad parcial hemolítica

A

Alpha hemolisis (verde)

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4
Q

GAS

A

streptococcus de grupo A pyogenes

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5
Q

GBS

A

streptococcus de grupo B agalactiae

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6
Q

Sensibilidad a antibióticos

A

Optoquina: S. pneumoniae
Bacitracina: S. pyogenes

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7
Q

Resistencia a antibióticos

A

Optoquina: S. viridans
Bacitracina: S. agalactiae

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8
Q

Características microbiológicas

A

Cocos grampositivos
Pares (diplococos) o cadenas.
Anaerobios facultativos
Fermentadores productores de ácido láctico
Catalasa negativos

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9
Q

Alfa hemolíticos

A

Virdians (no cápsula)–>No
S. Pneumoniae (encapsulado)–>Si
Sensibles a optoquinina

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10
Q

Beta hemolíticos

A

S. agalactiae (grupo B)–>No
S. pyogenes (grupo A)–>Si
Sensibles a bacitracina

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11
Q

Gamma hemolíticos

A

S. bovis
Enterococos (grupo D)–>faecium y faecalis
Crecen en 6.5% NaCl

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