ECG Made Easy 2

Question 1

Right bundle branch block looks like?

Answer 1

‘M’ in V1 ‘RSR’ pattern

Question 2

Left bundle branch block looks like?

Answer 2

‘W’ in V1

‘M’ in V6

Question 3

what is the average direction of depolarization of ventricles?

Answer 3

left to right

Question 4

what is left axis deviation usually due to?

Answer 4

left anterior fascicular block

left anterior hemiblock

Question 5

what is bifascicular block?

Answer 5

RBBB and left axis deviation from a left anterior fascicular block

Question 6

does a RBBB affect cardiac axis?

Answer 6

Nope, still normal cardiac axis

Question 7

septum is depolarized from which direction?

Answer 7

left to right

Question 8

what pattern in RBBB?

Answer 8

‘RSR’ in V1

Question 9

what pattern in LBBB?

Answer 9

‘M’ in V6

Question 10

Width of QRS complex?

Answer 10

120ms

less than 3 squares

Question 11

how do ventricular rhythms spread?

Answer 11

slower, and through purkinje

Wide QRSs and inverted ‘t’ waves

Question 12

what are escape rhythms?

Answer 12

ventricular origins of depolarization

Question 13

what is nodal escape?

Answer 13

when region around AV node takes over pacing

Question 14

what is an ectopic beat?

Answer 14

depolarization originating in abnormal location

Question 15

atrial extrasystoles have?

Answer 15

abnormal P wave

Question 16

junctional extrasystole has?

Answer 16

no P wave at all

Question 17

ventricular extrasystoles look? important?

Answer 17

wide, any shape,

common and usually not important

Question 18

what is R on T phenomenon?

Answer 18

when ventricular systoles occur at peak of T-waves

Question 19

T waves look how in supraventricular beats vs. ventricular beats?

Answer 19

supra: same way up

ventricular beats: inverted T waves

Question 20

P wave affected in ventricular extrasystole?

Answer 20

Nope, SA node not affected

Question 21

P wave affected in supraventricular extrasystole?

Answer 21

Yes it resets the cycle

Question 22

P wave affected in supraventricular extrasystole?

Answer 22

Yes it resets the cycle

Question 23

atrial tachycardia faster than how many beats/min?

Answer 23

> 150beats/min

Question 24

atrial flutter rate is greater than?

Answer 24

250/min

Question 25

where to look to see atrial flutter?

Answer 25

Lead II
aVR
aVF

Question 26

QRS is?

Answer 26

onset of conduction through the ventricles

Question 27

QT?

Answer 27

The time the ventricle is contracting