EPS
Also written as: EPS — electrophysiology study
Electrophysiology study - a diagnostic procedure to evaluate the heart's electrical conduction system.
Full Definition
An electrophysiology study (EPS) is an invasive diagnostic procedure that uses intracardiac catheters to map the heart's electrical system and induce arrhythmias under controlled conditions. During an EPS, multiple electrode catheters are positioned in various cardiac chambers to record electrical signals and deliver pacing stimuli. The procedure helps identify arrhythmia mechanisms, locate abnormal electrical pathways, and guide treatment decisions including ablation therapy. EPS is considered the gold standard for diagnosing complex arrhythmias and assessing risk of sudden cardiac death.
Usage
Usage note: Spell out on first use; EPS acceptable thereafter in clinical contexts.
In Context
- "The EPS revealed inducible ventricular tachycardia requiring ICD implantation." — Clinical report
- "Pre-procedural EPS mapping identified the optimal ablation target for the patient's arrhythmia." — Procedure note