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ECG > ECG > Flashcards

ECG Flashcards

1
Q

In normal sinus morphology, the P wave is ____ in lead __ and ____ in lead __

A

upright in lead II; down in lead VI

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2
Q

Differences in atrial morphology; or when the P wave is down in lead II and only up in lead V1

A

ectopic atrial rhythm

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3
Q

examples of ectopic atrial rhythm

A

atrial tachycardia; junctional rhythm

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4
Q

normal QRS complex is upright in these 2 leads

A

lead I and avF

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5
Q

limb leads

A

I, II, III, avR, avL, and avF

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6
Q

precordial leads

A

V1-V6

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7
Q

axis of lead I

A

0 degrees

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8
Q

axis of lead II

A

+60 degrees

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9
Q

axis of avF

A

+90 degrees

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10
Q

normal cardiac axis is between

A

-30 to 90 degrees

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11
Q

left axis deviation (LAD) is anywhere between

A

-30 to -90 degrees

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12
Q

right axis deviation (RAD) is anywhere between

A

+90 to +180 degrees

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13
Q

these leads should have a positive QRS complex

A

I, II, avF

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14
Q

Diagram of cardiac axis going clockwise

A

0 degrees (I), +60 degrees (II), +90 degrees (avF), +120 degrees (III), -150 degrees (avR), -30 degrees (avL)

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15
Q

examples of left axis deviation

A

left anterior block, LVH, left BBB

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16
Q

examples of right axis deviation

A

RBBB, RVH

17
Q

This wave becomes bigger and bigger through V1-V6

A

r wave

18
Q

when there is 2 r waves or “bunny ears”

A

RBBB

19
Q

This wave becomes smaller and smaller through V1-V6

A

s wave

20
Q

normal duration of QRS complex

A

0.08-0.10 sec

21
Q

atrial depolarization

A

P wave

22
Q

ventricular depolarization

A

QRS

23
Q

ventricular repolarization

A

T wave

24
Q

normal QT duration

A

0.4 to 0.44 sec

25
Q

occur when a site outside of the sinus node, but within the atria, creates action potentials faster than the sinus node.

A

atrial tachycardia

26
Q

If there is widened QRS complex (>120 ms) and downward defected in V1, then a ____ is present

A

Left BBB

27
Q

If there is widened QRS complex (>120 ms) and upward defected in V1, then a ____ is present

A

Right BBB

ECG (1 decks)

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