Atrioventricular block, third degree

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Third-degree atrioventricular block
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Synonyms Complete heart block
Pronounce
Field Cardiology
Symptoms Dizziness, Fainting, Shortness of breath
Complications
Onset
Duration
Types
Causes Fibrosis in cardiac conduction system, myocardial infarction, post-cardiac surgery, medication, vagal tone, electrolyte disturbances
Risks
Diagnosis Electrocardiogram
Differential diagnosis
Prevention
Treatment Pacemaker
Medication
Prognosis
Frequency
Deaths


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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