Video encyclopedia

Atrioventricular block


Atrioventricular Block (AV block) - Types of Heart Block Part 2, Animation.


1st Degree AV Block ECG - EMTprep.com


Atrioventricular blocks


Third Degree Atrioventricular Block ECG


3rd Degree AV Block ECG - EMTprep.com

Atrioventricular block is a type of heart block in which the conduction between the atria and ventricles of the heart is impaired. Under normal conditions, the sinoatrial node in the atria sets the pace for the heart, and these impulses travel down to the ventricles. In an AV block, this message does not reach the ventricles or is impaired along the way. The ventricles of the heart have their own pacing mechanisms, which can maintain a lowered heart rate in the absence of SA stimulation.
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