Atrioventricular block, third degree
| Third-degree atrioventricular block | |
|---|---|
| CompleteHeartBlock.jpg | |
| 12-lead ECG showing complete heart block | |
| Synonyms | Complete heart block
|
| Specialty | Cardiology |
| Symptoms | Dizziness, Fainting, Shortness of breath
|
| Causes | Fibrosis in cardiac conduction system, myocardial infarction, post-cardiac surgery, medication, vagal tone, electrolyte disturbances
|
| Diagnosis | Electrocardiogram
|
| Treatment | Pacemaker
|
A disorder characterized by an electrocardiographic finding of complete failure of atrial electrical impulse conduction to the ventricles. This is manifested on the EKG by disassociation of atrial and ventricular rhythms. The atrial rate must be faster than the ventricular rate. In other words, the nerve impulse generated in the sinoatrial node (SA node) in the atrium of the heart can not propagate to the ventricles. (cdisc)
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