2. Heart Block, Congenital
First Degree Congenital Heart Block; Second Degree Con. Heart Block (Wenckebach [Mobitz I]; Mobitz II; included)
Healthline.com (OMS Preferred Provider)

3. Heart Block
The heart's "natural" pacemaker is called the sinoatrial (SA) node or sinus node. It's a small mass of specialized cells in the heart's right atrium. It produces electrical impulses that make your heart beat. For your ...
www.americanheart.org

4. Heart Block
. In this condition, the electrical signals that stimulate heart muscle contractions are partially or totally blocked between the upper chambers (atria) and the lower chambers (ventricles).
www.hrspatients.org

5. Heart Block
A heart block occurs when the electrical current is delayed as it passes through the atrioventricular node, the bundle of His or both bundle branches. These areas of the heart are located between the upper and lower chambers.
www.cedars-sinai.edu

6. Heart Block
A condition in which the normal electrical impulses of the heart are interrupted. The interruption causes a change in the normal heart rhythm. The heart muscle normally contracts in a regular, coordinated, rhythmic fashion. These contractions are .....
www.cts.usc.edu

7. Heart block overview
Heart block is a problem that occurs with the heart's electrical system. This system controls the rate and rhythm of heartbeats. With each heartbeat, an electrical signal spreads across the heart<...
www.nhlbi.nih.gov

8. Heart Block—Child
The heart is comprised of four chambers: two upper chambers (atria) and two lower chambers (ventricles). The sinoatrial (SA) node, located near the top of the right atrium, makes electrical signals that are sent to the atrioventricular (AV) node. ...
www.mbhs.org

9. Cause of heart block
Heart block has many causes. Some people are born with the disorder (congenital), while others develop it during their lifetimes (acquired).
www.nhlbi.nih.gov.

10. Heart block diagnosis
Heart block may be diagnosed as part of a routine doctor's visit or during an emergency situation. (Third-degree heart block often is an emergency.)
rover.nhlbi.nih.gov