[Progress in clinical electrophysiologic study (EPS): recent tendency].
About twenty years have passed since the clinical introduction of electrophysiologic study (EPS). The mechanism of arrhythmias can be understood by EPS, and EPS-guided therapy is available theoretically. Of course, not all arrhythmia needs EPS, because other non-invasive tests are available. Clinically, reentry is the most frequently observed mechanism. Therefore, EPS is most suitable for the reentrant arrhythmias which can be repeatedly initiated and terminated by programmed stimulation. In many tachyarrhythmias, slow conduction pathway or area essential for reentry are demonstrated. On the other hand, triggered activity and abnormal automatism have been less frequently observed clinically. Today, application of EPS has been extended to catheter ablation for which precise mapping is required.
Kawara
T
T
1st Department of Internal Medicine, Tokyo Medical and Dental University.
Hiejima
K
K
D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000503:physiopathology; D001281:Atrial Fibrillation / Q000175:diagnosis / Q000503:physiopathology; D002036:Bundle of His / Q000503:physiopathology; D004594:Electrophysiology; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D012849:Sinoatrial Node / Q000503:physiopathology