Fluoroquinolonas Flashcards

1
Q

Espectro de acción de Fluoroquinolonas

A

Amplio: enterobacterias, p.aeruginosa, s.pneumoniae, h.influenzae, mycoplasma y chlamidia

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2
Q

Mecanismo acción de Fluoroquinolonas

A

Inhiben sínt. nucleótidos al bloquear DNA girasa o topoisomerasa IV.
Efecto bactericida

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3
Q

Resistencia de Fluoroquinolonas

A

Baja. Modificaciones de enz.blanco o modificación de la captación de la droga

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4
Q

Absorción de Fluoroquinolonas

A

Oral (70-80%)

Comidas retrasan la absorción

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5
Q

Distribución de Fluoroquinolonas

A

Buena, alcanza meninges, hueso, próstata y fagocitos

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6
Q

Excreción de Fluoroquinolonas

A

Vía renal.

Precaución pacientes con daño renal

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7
Q

Vida media de Fluoroquinolonas

A

Ciprofloxacina 4 hrs

Levofloxacina 6 hrs

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8
Q

Dosis de Fluoroquinolonas

A

Cada 12-24 hrs

Ef. bactericida depende de [ ]

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9
Q

RAM de Fluoroquinolonas

A

GI, hipersensibilidad, superinfección, alteraciones SNC (confusión)

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10
Q

Interacción de Fluoroquinolonas con otros fármacos

A

Afecta cit.P450: glibenclamida, teofilina, warfarina.

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11
Q

Quinolonas respiratorias

A

Levofloxacina, moxifloxacina. Se concentran en alvéolos hasta 5 veces, excelentes para tto. neumonía

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12
Q

Indicación Ciprofloxacina

A

Pielonefritis por gram -. Se concentra a nivel renal hasta 9 veces

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13
Q

Origen de Fluoroquinolonas

A

Incorporación de fluor al ác.nalidíxico

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