ECG Flashcards

1
Q

Ritmo sinusal

A

Normal
Despolarización correcta y normal

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2
Q

Onda P

A

Despolarización (latido) de aurículas
Activación del nodo SA

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3
Q

Intérvalo PR

A

Nodo AV
Pausa fisiológica para que se alcance a llenar el ventrículo
Retraso entre la despolarización auricular y ventricular
10-20 milisegundos

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4
Q

Complejo QRS

A

Despolarización ventricular

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5
Q

Onda Q

A

1º deflexión negativa (contracción del septum)

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6
Q

Onda R

A

Deflexión positiva (contracción de paredes)

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7
Q

Onda S

A

2º deflexión negativa (inicio de apertura de válvulas semilunares)

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8
Q

Segmento ST

A

Comienza repolarización ventricular

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9
Q

Onda T

A

Repolarización ventricular: fase de eyección lenta

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10
Q

Onda U

A

Cierre de válvulas semilunares

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11
Q

Criterios ritmo sinusal

A

Onda P antes de QRS
50-100 lpm en reposo (normal)
Onda P de la misma morfología en la misma derivada
R-R (distancia entre cada R) es constante

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12
Q

Cuadro pequeño en ECG

A

0.04 milisegundos

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13
Q

Cuadro grande en ECG

A

0.2 milisegundos

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14
Q

Tipos de derivaciones

A

Diferentes vistas del corazón (12)
I, II y III
aVR, aVL y aVF
V1, V2, V3, V4, V5 y V6

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