
Drawing of the EKG, with labels of intervals
'Cardiac electrophysiology' is the
science of the mechanisms, functions, and performance of the electrical activities of specific regions of the
heart. This term is usually used in describing studies of such phenomena by invasive (intracardiac) recording of spontaneous activity as well as of cardiac responses to
programmed electrical stimulation. These studies are performed to assess complex
arrhythmias, elucidate symptoms, evaluate abnormal
electrocardiograms, assess risk of developing arrhythmias in the future, and design treatment. These procedures increasingly include therapeutic methods (typically
radiofrequency ablation) in addition to diagnostic and prognostic procedures. Other therapeutic modalities employed in this field include
antiarrhythmic drug therapy and implantation of
pacemakers and
implantable cardioverter-defibrillators.
A specialist in cardiac electrophysiology is known as a cardiac electrophysiologist, or (more commonly) simply an electrophysiologist. Cardiac electrophysiology is considered a subspecialty of
cardiology, and in most countries requires one or more years of
fellowship training beyond a general cardiology fellowship.
See also
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Electrical conduction system of the heart
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Electrocardiogram (EKG)
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Electrophysiologic study
★
Clinical cardiac electrophysiology
External links
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Cardiac Electrophysiology Society
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Heart Rhythm Society