CONCEPTOS EKG Flashcards

1
Q

Sistema de conducción cardíaco

4

A
  1. nodo sinusal (SA)
  2. nodo auroculoventricular (AV)
  3. Haz de His (ramas derecha e izquierda)
  4. Sistema de purkinje
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2
Q

Sistema de conducción a nivel auricular

4

A
  1. Nodo SA
  2. tracto internodal (anterior, medio, posterior)
  3. fascículo de Bachmann
  4. Nodo AV
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3
Q

Ritmo del Nodo SA

A

60-100 lpm

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4
Q

Nodo SA también llamado

A

Nodo de Keith y Flack

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5
Q

Nodo de Aschoff y Tawara también llamado ____ se localiza en una zona llamada ___

A

Nodo AV / triángulo de Koch

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6
Q

Haz de his se divide en

A

rama derecha e izquierda

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7
Q

rama izquierda del haz de his se divide en

A

anterosuperior y posteroinferior

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8
Q

Fases del potencial de acción del cardiomiocito contractil

A

Fase 0 a 4

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9
Q

Fase 0 o también llamada

A

fase de ascenso rápido

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10
Q

potencial de reposo transmembrana del cardiomiocito

A

-90 mV

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11
Q

Fase 0 o ascenso rápido

hallazgo importante

A

Entrada masiva de Na+
pasa el PA de -90 mV a -60 mV —> despolarización completa hasta +20 mV

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12
Q

potencial umbral del cardiomiocito

A

-60 mV

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13
Q

fase del PA que corresponde al QRS del EKG

A

fase 0

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14
Q
A
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