Interpretación Electrocardiográfica Flashcards

1
Q

Valores ECG

A
  • 25 mm/s
  • 10 mm/mV
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2
Q

STEPS interpretacion

A
  • Frecuencia
  • Ritmo
  • Eje
  • Onda P
  • Intervalo P-R
  • Complejo QRS
  • Punto J
  • Segmento ST
  • Onda T
  • Itervalo QT
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3
Q

Frecuencia

A

Regular: R-R: 1500 cuadritos / # cuadritos
Irregular: en 6 cuadros grandes contar complejos QRS

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4
Q
A
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5
Q
A
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6
Q
A
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7
Q

Ritmo

A

Sinusal
aVR: (-)
* DII, DIII, aVF: (+)
* FC: 60-100
* P:QRS 1:1

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7
Q

Eje

A

Técnica rápida: ¿Positivo o
negativo?
* DI y aVF
Técnica 2:
* DI:
* Positivos - Negativos
* aVF:
* Positivos – Negativos

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8
Q

Onda P

A
  • Despolarización auricular
    <2.5mm
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9
Q

Intervalo PR

A

Normal:
* <5 mm (<0.20s)

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10
Q

Complejo QRS

A

Normal: <0.10s (<2.5 mm)
- Despolarización ventricular

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11
Q

Punto J

A

Marca la transición del complejo QRS al segmento ST

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12
Q

Segmento ST

A

Intervalo entre despolarización y repolarización ventricular.
- No debe estar elevado porque sino es infarto

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13
Q

Onda T

A
  • Mayor amplitud: V2-V3
  • Negativa: aVR +/- V1
  • Ligeramente asimétrica: Pendiente descendente es más pronunciada.
  • Concordancia: QRS acompañado de T en misma positividad/negatividad.
  • Valores normales: 0.12-0.20 s
  • 6 mm (Frontal)
  • 10 mm (Precordiales)

Repolarización ventricular

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13
Q

Intervalo QT

A
  • Tiempo necesario para la despolarización y repolarización ventricular.
  • Se mide desde inicio de onda Q hasta final T
  • Valores normales: Mujer: <450 ms y Hombre: <430 ms
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