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What is Atrioventricular Block?

Description of the disease

Atrioventricular block is a condition in which the impulse is transmitted from the atria to the ventricles slower than usual or completely blocked. This can lead to disturbances in heart rhythm and function.


  • First-degree atrioventricular block: slowing of conduction, but all impulses still reach the ventricles.
  • Second-degree atrioventricular block: some impulses are blocked and do not reach the ventricles.
  • Third-degree atrioventricular block: all impulses are blocked and do not reach the ventricles.


Symptoms may include dizziness, weakness, palpitations, fainting, and other signs of heart rhythm disturbance.


Causes can be varied, including heart disease, disturbances in the heart's conduction system, and the influence of medications.


Diagnosis includes electrocardiography (ECG) and possibly other additional tests to determine the degree of blockage.


Treatment may include taking medication, implantation of a pacemaker, or other methods of correcting the heart rhythm.


Prevention includes maintaining a healthy lifestyle, regular check-ups with a cardiologist, and following prescription medication.


Diagnosis and treatment of atrioventricular block is carried out by a cardiologist or electrophysiologist.

Note: This material is provided for informational purposes only and is not medical advice.