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FARMACOLOGIA DE LOS
ANESTESICOS REGIONALES Y
LOCALES
DOCENTE GREVILLI GARCIA GODOS CASTILLO
benceno
Base aceptadora
de protones
Liposolubilidad mejora
la penetración a través de
Estructuras nerviosas
POTENCIA
ANESTESICA
LIPOAFINIDAD AL
Condición de básica
no ionizada (B) y
ácida, catiónica,
ionizada (BH+)
220 a 350 Daltons
Para poder actuar los AL deben
Ponerse en contacto con el axón
Pero primero deben atravesar el
Acceder a MC y
ponerse en contacto
con el sitio de acción
Canales de sodio dependientes de voltaje
Los AL discurren
Difusión pasiva
MC altamente selectiva
Bicapa lipídica
Espesor de 60 a 80 A
SE BLOQUEARAN PRIMERO LAS FIBRAS AMIELÍNICAS
ABSORCIÓN
• LOS AL CON POCA
ABSORCION SON MAS
SEGUROS
• DEPENDE DE LA NATURALEZA
DEL TEJIDO (AUMENTA EN
LOS VASCULARIZADOS Y
DISMINUYE EN EL TEJIDO
GRASO)
DISTRIBUCIÓN
• DEPENDE DE CARACTERISTICAS
FISICO QUIMICAS, COHEFICIENTE
DE SOLUBILIDAD Y UNION A
PROTEINAS PLASMATICAS.
• ASI UN MAYOR GRADO DE
SOLUBILIDAD JUNTO CON UNA
MENOR UNION A PROTEINAS
(ALFA 1ACIDO GLICOPROTEINA)
TENDRA UNA MAYOR
DISTRIBUCION EN TEJIDOS
PERIFERICOS Y Y UNA MENOR []
PLAMATICA.
• AL, ATRAVIEZAN LA BHE Y
PLACENTARIA X DIFUSION
SIMPLE
METABOLISMO Y ELIMINACION
DIFIEREN SEGÚN SU ESTRUCTURA QUIMICA
AMIDASAS
ELIMINACION RENAL
EN EUROPA 200 mg
Y 300 mg EN USA
FARMACOLOGIA DE ANESTESICOS LOCO REGIONALES (3).pptx
FARMACOLOGIA DE ANESTESICOS LOCO REGIONALES (3).pptx
FARMACOLOGIA DE ANESTESICOS LOCO REGIONALES (3).pptx
FARMACOLOGIA DE ANESTESICOS LOCO REGIONALES (3).pptx

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FARMACOLOGIA DE ANESTESICOS LOCO REGIONALES (3).pptx

  • 1. FARMACOLOGIA DE LOS ANESTESICOS REGIONALES Y LOCALES DOCENTE GREVILLI GARCIA GODOS CASTILLO
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.
  • 22.
  • 23. benceno Base aceptadora de protones Liposolubilidad mejora la penetración a través de Estructuras nerviosas POTENCIA ANESTESICA LIPOAFINIDAD AL Condición de básica no ionizada (B) y ácida, catiónica, ionizada (BH+)
  • 24. 220 a 350 Daltons
  • 25.
  • 26.
  • 27.
  • 28.
  • 29.
  • 30.
  • 31.
  • 32. Para poder actuar los AL deben Ponerse en contacto con el axón Pero primero deben atravesar el Acceder a MC y ponerse en contacto con el sitio de acción
  • 33. Canales de sodio dependientes de voltaje Los AL discurren Difusión pasiva MC altamente selectiva Bicapa lipídica Espesor de 60 a 80 A
  • 34. SE BLOQUEARAN PRIMERO LAS FIBRAS AMIELÍNICAS
  • 35.
  • 36.
  • 37. ABSORCIÓN • LOS AL CON POCA ABSORCION SON MAS SEGUROS • DEPENDE DE LA NATURALEZA DEL TEJIDO (AUMENTA EN LOS VASCULARIZADOS Y DISMINUYE EN EL TEJIDO GRASO) DISTRIBUCIÓN • DEPENDE DE CARACTERISTICAS FISICO QUIMICAS, COHEFICIENTE DE SOLUBILIDAD Y UNION A PROTEINAS PLASMATICAS. • ASI UN MAYOR GRADO DE SOLUBILIDAD JUNTO CON UNA MENOR UNION A PROTEINAS (ALFA 1ACIDO GLICOPROTEINA) TENDRA UNA MAYOR DISTRIBUCION EN TEJIDOS PERIFERICOS Y Y UNA MENOR [] PLAMATICA. • AL, ATRAVIEZAN LA BHE Y PLACENTARIA X DIFUSION SIMPLE
  • 38. METABOLISMO Y ELIMINACION DIFIEREN SEGÚN SU ESTRUCTURA QUIMICA AMIDASAS ELIMINACION RENAL
  • 39.
  • 40. EN EUROPA 200 mg Y 300 mg EN USA