Cardiac Electrophysiology at St. Jude and St. Joseph Heritage Medical Group
Electrophysiologic (EP) testing provokes known but infrequent arrhythmias.
Using local anesthesia, temporary electrode catheters are positioned in
the heart’s atria and/or ventricles and at strategic locations along
the conduction system. Our St. Joseph and St. Jude Heritage Medical Group
experts record cardiac electrical signals and “map” the spread
of electrical impulses during each heartbeat. This shows where the heart
blocks it. Most significantly, it also triggers latent tachycardia or
bradycardia. Induced tachycardias can usually be stopped by rapid pacing
via the electrode catheters. Being able to "turn on" and "turn
off" tachycardias during electrophysiologic studies allows antiarrhythmic
drugs to be tested quickly for effectiveness. This can be done during
a single study using intravenous therapy or during short follow-up studies
with oral medication. Electrophysiologic testing has been performed safely
worldwide; complications only rarely occur.