electrophysiological study

Also found in: Dictionary, Financial, Encyclopedia.
Related to electrophysiological study: Cardiac electrophysiology, Electrophysiology Study of the Heart

electrophysiological study (EPS)

an invasive electrodiagnostic or manometric procedure that uses electrode catheters to pace the heart and potentially induce arrhythmias. The test identifies defects in the heart conduction system and arrhythmias that are otherwise inapparent. It also is used to assess the effectiveness of antiarrhythmic drugs.

Electrophysiological study

A test that monitors the electrical activity of the heart in order to diagnose arrhythmia. An electrophysiological study measures electrical signals through a cardiac catheter that is inserted into an artery in the leg and guided up into the atrium and ventricle of the heart.
Mentioned in: Pacemakers
References in periodicals archive ?
The electrophysiological study was performed with the patient in a nonsedated and fasting state, with conventional techniques of intracardiac recording and pacing.
In the patients of the control group, the electrophysiological study was indicated to study the AV node and sinus function in 2 patients, atrial flutter in 3 patients, and programmed electrical stimulation in 11 patients.
Although his family history was suspect for sudden cardiac death, our patient was free of arrhythmia symptoms and denied any syncope or presyncope and he has normal atrial (230 ms) and near-normal ventricular refractory periods (170 ms) without any inducible fibrillations in the electrophysiological study.
He was then transferred to another hospital for electrophysiological study (EPS).
We used ECG body surface map recordings, obtained at the Dalhousie University, in 134 healthy males and in 307 males with MI, of whom 104 had a recent history of sustained VT and electrophysiological study of inducibility of VT.
Symptomatic patients displaying the type 1 Brugada ECG (either spontaneously or after sodium channel blockade) who present with aborted sudden death should receive an ICD without additional need for electrophysiological study (EPS).