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Flashcards in ECGs: Bundle Branch Blocks Deck (18)
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1

the bundle of his splits into...

left anterior hemibundle
left posterior hemibundle

2

3 criteria on ECG for RBBB

QRS >0.12
RSR complex in V1 (MarroW)
delayed S wave in 1, V5 and V6

3

VT is defined as >__ beats of ventricular origin with a HR >__bpm

3
120

4

sustained VT needs >__s of tachycardia

30

5

VT with identical QRS complexes

monomorphic VT

6

VT with different QRS complexes

polymorphic VT

7

what is aberrency?

when someone with a BBB develops atrial tachycardia

8

how do you diagnose SVT with aberrancy

vagal manoeuvres
adenosine

9

if the patient has a PMH of BBB and shows signs of VT on ECG...

consider SVT with aberrancy

10

causes of TdP

low magnesium
long QT

11

what is a q wave?

the first negative deflection in the QRS complex

12

left anterior hemiblock causes __ axis deviation

left

13

left posterior causes __ axis deviation

right

14

best place to look for p waves

V1

15

name 4 ways in which T waves can present on ECG in an MI

tall
biphasic
inverted
flattened

16

what's the earliest ECG sign of an MI?

abnormal T wave

17

where do pathological Q waves present?

V1-3

18

ST depression in V1-3

posterior MI