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

A

1 big box on EKG

200msec

Q

QT interval

A

500msec

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

Q

QRS interval

A

120msec

less than 3 small boxes

Q

QT interval gets smaller if

A

fast heart beat

Q

QT interval gets bigger if

A

slow heart beat

Q

normal QRS axis

A

in between 0 degrees and 90 degrees

Q

good first place to look at for axis

A

lead II

Q

quick way to see if axis is normal

A

positive in Lead I and positive in aVF

Q

15 big boxes equals

A

3 seconds

Q

lead I is

A

0 degrees

Q

lead II is

A

60 degrees

Q

lead III is

A

120 degrees

Q

aVL is

A

-30 degrees

Q

aVF is

A

90 degrees

Q

the most common axis deviation

A

LAD

Q

more negative than -30 degrees axis

A

left anterior fasicular block (LAF block)

-conduction system block

Q

where is a good place to see P waves

A

V1

Q

good place to look for atrial flutter

A

aVF and lead II

Q

junctional p wave is before

A

the QRS

is upside down