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18 Cards in this Set

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Features of RBBB.
- V1: rSR'
- I and V6: slurred S wave
- QRS >0.12s
- ST and T wave inversion in V1-2.
Interpret this ECG.
RBBB
- V1: rSR', inverted T wave
- I and V6: slurred S wave
Features of LBBB.
- V1: wide S wave
- I and V6: large R wave
- QRS >0.12s
- T wave polarity opposite of major QRS
Interpret this ECG.
LBBB
- V1: wide S wave
- I and V6: large R wave
- QRS >0.12s
- T wave polarity opposite of major QRS
Features of LAHB.
- left axis deviation > -40 degree
- +/- small Q wave in lead I
- eS complex in lead III.
Interpret this ECG.
LAHB
- left axis deviation >-40 degree
- small Q wave in lead I
- rS complex in lead III.
Features of LPHB.
- QRS axis > 120 degrees
- small Q-wave in lead III.
Interpret this ECG.
LPHB
- QRS axis > 120 degrees
- small Q-wave in lead III.
What is this?

- prolonged PR interval.
first degree AV block.
Name two secondary degree AV block.
- Mobitz1 (wenckebach)
- Mobitz2
Features of Motitz1 (Wenckebach).
- conduction in AV node progressively gets slower.
Interpret this ECG.
Wenckebach (Mobitz1)
- PR interval gets longer
- eventually have dropped QRS
- reset
Features of Mobitz2.
- all or none
Interpret this ECG.
Mobitz2
Interpret this ECG.
Mobitz2
Features of 3rd degree AV block.
- no consistant PR interval
- atrial rate > ventricular rate
Interpret this ECG.
3rd degree AV block
Interpret this ECG.
3rd degree AV block
- wide QRS: pacemaker below bundle of His