Lidocaine depresses depolarization and automaticity in the
ventricles. It has very little effect on the
atrial tissues. Lidocaine
is usually contraindicated in second degree mobitz II and third-degree blocks, without a pacemaker.
I can appreciate the predicament your in, having 2 Dr's...each telling you something different. In my opinion, your cardiologist must have a reason to have told you to avoid Lidocaine. He is the specialist when it comes to your heart.