What happens in first-degree heart block?

What happens in first-degree heart block?

First-degree heart block is a condition in which the wiring of the heart is slow to send electrical signals but all of the signals are able to pass successfully. There is no electrical block but rather a slowing or delay of the signal. It usually does not cause problems. Often it does not need treatment.

What causes 1st degree heart block?

The most common causes of first-degree heart block are AV nodal disease, enhanced vagal tone (for example in athletes), myocarditis, acute myocardial infarction (especially acute inferior MI), electrolyte disturbances and medication.

https://www.youtube.com/watch?v=XB22wXuaysQ

Why do I have a 1st degree heart block?

Heart blocks arise secondary to the defects in the conduction system of the heart. In the first-degree heart blocks all the electric impulses that originate in the SA node are conducted to the ventricles, but there is a delay in the propagation of the electrical activity that is indicated by a prolongation of the PR interval.

What does it mean to have second degree heart block?

Second-degree heart block means that the electrical signals between your atria and ventricles can intermittently fail to conduct. There are 2 types of second-degree heart block Mobitz type I: The electrical signals get slower and slower between beats.

What causes first degree atrioventricular ( AV ) block?

First-degree atrioventricular (AV) block is a variation in the normal rhythm of the heart where the electrical signal between the atria and ventricles is slightly delayed. This condition usually does not cause any symptoms, and may be an incidental finding during a routine examination for an unrelated medical problem.

What are the different types of heart block?

There are different types of heart block that can be more or less serious. First-degree heart block is a condition in which the wiring of the heart is slow to send electrical signals but all of the signals are able to pass successfully. There is no electrical block but rather a slowing or delay of the signal.