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ECG > Model for ECG Interpretation > Flashcards

Model for ECG Interpretation Flashcards

1
Q

HR > 100 bpm, what is the conclusion?

A

tachycardia

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2
Q

HR < 60 bpm, what is the conclusion?

A

bradycardia

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3
Q

HR between 60-100 bpm, what is the conclusion?

A

normal resting HR

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4
Q

HR between 100-210 w/ exercise, what is the conclusion?

A

usually normal response

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5
Q

HR = speed

A

null

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6
Q

Heart rhythm = conduction

A

null

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7
Q

Heart Rhythm
QRS following every p-wave?

yes & normal rate?
no ->

A
  • > normal sinus rhythm

- > nonconducted PAC or 2nd and 3rd degree A-V block

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8
Q

Heart Rhythm
P-wave preceding every QRS?

yes & normal rate? ->
yes & tachycardia? ->
no, or abnormal p-wave? ->

A
  • > normal sinus rhythm
  • > normal with exercise or supraventricular tachycardia
  • > PVC, AV nodal rhythm, AV block
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9
Q

Heart Rhythm
Early beats?

yes? p-wave present, normal QRS? ->
yes? P-wave absent, long QRS? ->

A
  • > PAC

- > PVC

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10
Q

Heart Rhythm
Pauses?

yes? ->

A

-> sinus rhythm, nonconducted PAC, or 1st or 2nd AV block

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11
Q

Heart Rhythm
total irregularity?

yes?

A

atrial or ventricular fibrillation

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12
Q

PR interval

normal? ->
short? ->
long? ->

A
  • > normal AV conduction
  • > preexcitation syndrome (WPW or LGL)
  • > 1st or 2nd AV block
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13
Q

QRS Interval

normal? ->
long & normal rate? ->
long & tachycardia? ->

A
  • > normal ventricular activation
  • > bundle branch block
  • > ventricular tachycardia or supraventricular tachycardia with aberrancy
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14
Q

QRS Axis in frontal plane

QRS positive in both leads? ->
Lead I positive, aVF negative? ->
Lead I negative, aVF positive? ->
QRS negative in both leads? ->

A
  • > normal axis
  • > LAD
  • > RAD
  • > Indeterminate axis (no man’s land)
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15
Q

Hypertrophy
Atrial

Check p-wave shape in lead II and V1, measure amplitude and duration

increased amplitude? ->
increased width, biphasic V1? ->

A
  • > RAH

- > LAH or disease

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16
Q

Hypertrophy
Ventricular

Evaluate QRS in leads V1 and V5-6

R-wave > 5 mm tall in V1? ->
Sum of S-wave in V1 and R-wave in V5-6 > 35mm?

A
  • > RVH

- > LVH

17
Q

Ischemia/Infarction
Evaluate Q-waves, ST segments, and T-waves in ALL leads

abnormal Q-wave? ->
elevated ST-segment?->
depressed ST segment?->
inverted T-wave? ->

A
  • > old MI
  • > acute MI, sever ischemia or early repolarization
  • > ischemia
  • > may be ischemia or non-diagnostic

ECG (5 decks)

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