CONDUCTION DEFECTS/ HEART BLOCKS/ AV BLOCKS

Conduction is altered at the level of the AV node.

1. First Degree AV block – the impulse is transmitted normally, but it is delayed longer at the level of the AV node.
2. Second Degree AV block – some, but not all of the impulses are transmitted. The AV node becomes selective about which impulses are conducted to the ventricles
3. Third Degree AV blocks – no impulse from the SA node is transmitted by the AV node.

SUMMARY OF THERAPEUTIC MODALITIES FOR DSRHYTHMIAS:

1. Anti-dysrhythmic Drugs
2. Artificial Cardiac Pacemaker
3. Cardioversion I Defibrillation
4. Cardiopulmonary Resuscitation