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EXTRAS Flashcards

(7 cards)

1
Q

KETAMINA

A

Grupo farmacológico: FENCICLIDINA
pKa: 7.5
Unión a proteínas: 12%
Eliminación: RENAL 2-3 hrs
Metabolismo: HEPÁTICO por N-desmetilación
Incio de acción: 30-60 seg

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2
Q

METABOLITO ACTIVO KETAMINA

A

NORKETAMINA

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3
Q

Mecanismo acción KETAMINA

A

Receptores: glutamato NMDA y no NMDA, muscarínicos y nicotínicos, favorece transmisión GABA
Antagonista NMDA inhibe libración presináptica de GLUTAMATO y ASPARTATO.
INHIBE producción de ON, liberación intracel GMPc y liberación de acetilcolina

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4
Q

CONTRAINDICACIÓN KETAMINA

A

Absoluta: reserva VD deteriorada
Relativa: trastorno psíquico, tx tiroideos, cx tórax o abdomen

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5
Q

DOSIS DE KETAMINA

A

Inducción: 0.5-2 mg/kg. Comienzo 3-5 min
Sedoanalgesia:0.3-0.5 mg/kg/h

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6
Q

Mecanismo de acción ONDANSETRÓN

A

Bloqueo receptores de serotonina 5-HT3.
Reduce la actividad del nervio vago, que desactiva el centro del vómito en el bulbo raquídeo, y también bloquea los receptores de serotonina en la zona gatillo quimiorreceptora.

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7
Q
A
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