Understanding the technology
About This Technology.
The Electrophysiology (EP) Laboratory is a dedicated procedure room for diagnosing and treating heart rhythm disorders. Here, doctors perform electrophysiology studies, catheter ablation, and implantation of devices such as pacemakers, ICDs, and CRT devices. Procedures are done through a blood vessel or a small incision, guided by X-ray and by electrical signals recorded inside the heart.
What Is the Electrophysiology (EP) Laboratory?
Electrophysiology is the study of the heart's electrical system, the signals that control when and how fast your heart beats. The Electrophysiology (EP) Laboratory, or EP lab, is a procedure room set up to diagnose and treat heart rhythm disorders (arrhythmias). At Heartology, it is part of the Arrhythmia and Device Center.
Procedures Performed Here
- Electrophysiology study. Thin catheters are passed through a blood vessel into the heart to record its electrical signals and find the source of an arrhythmia.
- Catheter ablation. A small area of heart tissue that starts or carries the arrhythmia is switched off with energy from the catheter tip.
- Device implantation. Pacemakers, implantable cardioverter defibrillators (ICDs), and cardiac resynchronization therapy (CRT) devices are placed under the skin of the chest, with wires (leads) running to the heart.
- Other device procedures, such as an implantable loop recorder or lead extraction (removing device wires).
Equipment and Team
The room has an X-ray system (fluoroscopy) to show catheter positions, a recording system that displays electrical signals from inside the heart, a stimulator that can trigger an arrhythmia in a controlled way, a defibrillator, and a 3D mapping system. Mapping and ablation energy are covered on the EnSite X EP System, HD Grid 3D Mapping System, and FARAPULSE pages.
Procedures are led by a cardiologist with expertise in electrophysiology, supported by nurses, radiographers, and technicians who run the recording and mapping systems. When deep sedation or general anesthesia is needed, an anesthesiologist joins the team.
Your Journey Through the EP Lab
Before the procedure, your doctor explains its purpose, benefits, and risks, and you sign a consent form. You will usually be asked to fast for several hours. Some medicines, such as blood thinners or rhythm medicines, may need adjusting; do not stop any medicine without your doctor's advice.
In the procedure room, you lie on the table and are connected to monitors. For an electrophysiology study or ablation, catheters are usually inserted through a vein in the groin under local anesthesia, with sedation or general anesthesia depending on the procedure. For device implantation, the doctor makes a small incision below the collarbone.
Afterward, you are monitored on the ward. After groin access, you lie flat for a few hours so the puncture site does not bleed.
Risks and Your Doctor's Decision
As with other catheter procedures, possible risks include bruising or bleeding at the puncture site. More serious complications, such as fluid building up around the heart (tamponade), are uncommon. For device implantation, risks include infection and lead displacement. Your doctor decides which procedure suits you after reviewing your symptoms, ECG recordings, and test results.
Clinical use
Uses and Benefits.
Whether this technology suits your condition is decided by a doctor after an evaluation.
- Finding the source and pathway of a heart rhythm disorder through an electrophysiology study
- Catheter ablation for supraventricular tachycardia, atrial flutter, and atrial fibrillation
- Ablation of arrhythmias from the lower chambers, such as premature ventricular contractions and ventricular tachycardia
- Pacemaker implantation for a heart rate that is too slow
- ICD implantation for people at risk of dangerous arrhythmias
- Cardiac resynchronization therapy (CRT) device implantation for certain types of heart failure
- Implantable loop recorders and lead extraction when needed
Benefits for the Doctor's Assessment
One Room for Rhythm Diagnosis and Treatment
An electrophysiology study and ablation can be done in the same session, so an arrhythmia source that is found can be treated right away if your doctor considers it appropriate.
Electrical Signals Recorded From Inside the Heart
Catheters record signals from several points inside the heart, giving information that a standard ECG on the skin cannot show.
3D Mapping for Complex Arrhythmias
The mapping system builds a model of the heart chambers on screen and shows catheter positions, which can reduce the use of X-ray.
Continuous Monitoring During the Procedure
Your heart rhythm, blood pressure, and oxygen level are monitored throughout, with a defibrillator ready if a dangerous rhythm occurs.
Brief Technical Information
- Facility type
- Procedure room for electrophysiology and heart rhythm device implantation
- Main procedures
- Electrophysiology studies, catheter ablation, and pacemaker, ICD, and CRT implantation
- Procedure guidance
- X-ray (fluoroscopy) and a 3D mapping system
- Usual anesthesia
- Local anesthesia with sedation; general anesthesia for certain procedures
- Service location
- Arrhythmia and Device Center
