– or EP study, requires the insertion of a catheter (long, thin, flexible tube) into the heart. Electrical stimulation with the catheter in different locations in the heart is useful to diagnose slow or rapid heartbeats.
Implantable loop recorder
– is put under the skin for anywhere from one to three years. It is reserved for people who have very infrequent symptoms.
Pacemakers and defibrillators
– designed to treat slow heartbeats, these devices can detect tachycardia, supraventricular tachycardia and atrial fibrillation, all rapid heartbeats. The diagnostics built into a pacemaker assume a different role. Detection is a byproduct of the pacemaker’s treatment ability.