An atrioventricular block (or AV block) involves the impairment of the conduction between the atria and ventricles of the heart. Under normal conditions, SA node ... en.wikipedia.org |
In first degree heart block there is a split-second delay in the time that it takes electrical pulses to move through the AV node. First degree heart block rarely ... www.nhs.uk |
30 Nov 2012 ... Atrioventricular Block. Atrioventricular (AV) block occurs when atrial depolarizations fail to reach the ventricles or when atrial depolarization is ... emedicine.medscape.com |