Basic EKG interpretation Flashcards by Annalyse bigatti

Q

right arm to left arm

A

lead I

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Q

right arm to left leg

A

lead II

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Q

left arm to left leg

A

lead III

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Q

heart towards right arm

A

aVR

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Q

heart towards left arm

A

aVL

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Q

heart towards left leg

A

aVF

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Q

V1

A

4th intercostal space, right of sternum

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Q

V2

A

right across from V1 left sternal border

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Q

V3

A

goes in between V2 and V4

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Q

V4

A

to be done after V1 and V2, midclavicular line, 5th intercostal space

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Q

V6

A

mid-axial

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Q

V5

A

in between V4 and V6

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Q

limb leads

A

look into the plane of the body

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Q

percordial leads

A

(in front of heart)

transverse plane

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Q

axis shift is

A

QRS (mostly)

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Q

normal PR interval

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A

1 big box on EKG

200msec

Q

QT interval

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A

500msec

has to be corrected for heart rate. (QT subc)

Q

QRS interval

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A

120msec

less than 3 small boxes

Q

QT interval gets smaller if

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A

fast heart beat

Q

QT interval gets bigger if

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A

slow heart beat

Q

normal QRS axis

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A

in between 0 degrees and 90 degrees

Q

good first place to look at for axis

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A

lead II

Q

quick way to see if axis is normal

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A

positive in Lead I and positive in aVF

Q

15 big boxes equals

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A

3 seconds

lead I is

0 degrees

lead II is

60 degrees

lead III is

120 degrees

aVL is

-30 degrees

aVF is

90 degrees

the most common axis deviation

LAD

more negative than -30 degrees axis

left anterior fasicular block (LAF block) | -conduction system block

where is a good place to see P waves

V1

good place to look for atrial flutter

aVF and lead II

junctional p wave is before

the QRS | is upside down