A decrease in blood flow to the AV nodal artery (a branch of the RCA) can result in AV nodal ischemia and AV conduction abnormalities such as the second-degree type II AV block seen in the ECG.

A decrease in blood flow to the AV nodal artery (a branch of the RCA) can result in AV nodal ischemia and AV conduction abnormalities such as the 2nd degree type I AV block seen in the ECG.

Once the signal gets past the AV node it goes through the two branches of bundle of His-Purkinje fibers into your ventricles. The right branch of the bundle of His goes to your right ventricle.

The AV nodal branch was selected with a 0.014-inch guide wire, over which a 2.7 F infusion catheter was inserted into the AV nodal artery.

In patients with atrioventricular septal defect (AVSD), the occurrence of nonsurgical AV block has been reported. We have looked for an explanation in the development of the AV conduction system.

In this case of atrioventricular block in an adult patient with positive anti-Ro antibodies, we used electrophysiological testing to localize the conduction defect below the atrioventricular node.

This is not AV nodal reentrant tachycardia with retrograde 2:1 block, a condition that would manifest retrograde P waves (negative in inferior leads; not present here).

Atrioventricular (AV) nodal reentrant tachycardia (AVNRT) is an irregular heart rhythm that can cause excessively fast heart rates. Though not usually serious, early diagnosis can help prevent ...

The two conducted complexes have a widened QRS duration (0.12 sec) and resemble a left bundle branch block (LBBB). However, there is a small septal R wave in lead V1 (↓) and a prominent S wave ...

Approximately 37,000 AV nodal ablation (ablate and pace) procedures were performed in the U.S. in 2003. According to Health Research International, that number is expected to nearly double in the ...