Ventricular Arrhythmias

Question 1

• Wide, bizarre QRS, usually without P wave, followed by compensatory pause
• Usually opposite polarity of normal QRS
• Bigeminy=1:1 normal beat to early beat
• Trigeminy=2:1 normal beats to early beat
• Impulse originating from irritable foci in ventricle

Answer 1

PVC

Question 2

• Wide, indescript QES
• A run of 3+ PVCs
• 120-200bpm

Answer 2

V Tach

Question 3

• No P waves, wide QRS
• Regular rhythm
• 50-100bpm
• Ventricular escape beat(s) (rarely sustained)

Answer 3

Accelerated Idioventricular Rhythm

Question 4

Underlying rate normal
Underlying rhythm normal
No P wave on funny beat
Wide QRS complex with large amplitude, usually opposite polarity of normal QRS’s

Answer 4

PVC

Question 5

Regular Rhythm 
Accelerated rate (150-250)
No P waves
Wide QRS with bizarre appearance 
Can be monomorphic or polymorphic

Answer 5

V tach

Question 6

Regular Rhythm
Rate 50-100
No P waves
Wide, bizarre looking QRS
Ventricular escape beat

Answer 6

Accelerated idioventricular rhythm

Question 7

One normal beat to one PVC

Answer 7

Bigeminy

Question 8

One normal beat to two PVC

Answer 8

Trigeminy