Invasive cardiac electrophysiology studies
- Munther K Homoud, MD
Munther K Homoud, MD
- Associate Professor of Medicine
- Tufts University School of Medicine
Invasive cardiac electrophysiology (EP) is a collection of clinical techniques for the investigation and treatment of cardiac rhythm disorders [1,2]. These techniques permit a detailed analysis of the mechanism(s) underlying the cardiac arrhythmia, precise location of the site of origin, and, when applicable, definitive treatment via catheter-based ablation techniques. Thus, electrophysiology studies can accomplish the following goals (table 1):
●Definitive diagnosis of an arrhythmia (supraventricular or ventricular tachyarrhythmias or a bradyarrhythmia)
●Establish the etiology for syncope (bradyarrhythmia or tachyarrhythmia), especially in patients with structural heart disease
●Stratification for risk of sudden cardiac death
●Evaluate the feasibility or outcome of nonpharmacologic therapy (eg, transcatheter radiofrequency ablation, antiarrhythmic surgery, or implantable cardioverter/defibrillator therapy)To continue reading this article, you must log in with your personal, hospital, or group practice subscription. For more information on subscription options, click below on the option that best describes you:
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- INDICATIONS AND CONTRAINDICATIONS
- PREPROCEDURAL EVALUATION
- PREPARATION AND MONITORING
- VASCULAR ACCESS AND ELECTRODE CATHETER PLACEMENT
- ELECTROCARDIOGRAPHIC AND ELECTROPHYSIOLOGIC RECORDINGS
- Baseline recordings
- AH interval
- His bundle electrogram duration
- HV interval
- VA conduction
- Sinoatrial conduction time
- Sinus node recovery time
- PROGRAMMED ELECTRICAL STIMULATION
- MEDICATIONS USED FOR DIAGNOSTIC PURPOSES DURING EPS
- MAPPING AND ABLATION
- COMPLICATIONS OF INVASIVE CARDIAC ELECTROPHYSIOLOGY STUDIES
- Complications with concomitant catheter ablation
- SUMMARY AND RECOMMENDATIONS