AV Blocks

Question 1

1* AV block

Answer 1

Rhythm regular
Rate underlying
PRI is > than 0.2 sec consistently
QRS normal

Question 2

2 AV block mobitz 1

Answer 2

Successively linger PRI until one dropped QRS
Rhythm ventricular irregular
Atrial is regular

Question 3

2 AV block mobitz 2

Answer 3

P wave punctual and similar
Ventricular irregular, atrial rhythm regular
PRI normal or prolonged
QRS abnormal

Question 4

3 AV block

Answer 4

Atrial and ventricle are depolarizing independently
Nothing in this rhythm makes sense

PRI is inconsistent!