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An Electrophysiology Study (EPS or EP Study) is a specialized test used to evaluate the electrical activity of the heart and identify the source of abnormal heart rhythms, known as arrhythmias. During an EPS, thin electrode catheters are guided through blood vessels into the heart to record electrical signals and assess how the heart's electrical system functions.
Patients experiencing recurrent palpitations, unexplained fainting or diagnosed rhythm abnormalities may be advised to undergo an Electrophysiology Study in Gurugram as part of further cardiac evaluation.
The heart has its own electrical system that controls the timing and coordination of every heartbeat. Problems in this electrical system can cause the heart to beat too fast, too slowly or irregularly.
An EPS allows detailed evaluation of these electrical pathways. Specialized catheters containing electrodes record signals from different areas of the heart and can help determine where an abnormal rhythm originates.
An electrophysiology study may be recommended when more detailed information about a suspected or confirmed arrhythmia is required.
It can help doctors:
EPS can therefore play both a diagnostic and treatment-planning role in arrhythmia care.
An EPS is not required for every patient with palpitations. However, further rhythm evaluation may be considered when symptoms or other cardiac investigations suggest an arrhythmia.
Symptoms can include recurrent palpitations, rapid heartbeat, irregular heartbeat, dizziness, light-headedness, unexplained fainting, shortness of breath or reduced exercise tolerance. Arrhythmias can produce a fast, slow or irregular heartbeat.
The appropriate test depends on the patient's symptoms, ECG findings and medical history.
An EP study is performed in a specialized electrophysiology laboratory (EP lab) or cardiac catheterization laboratory.
A local anesthetic is generally used at the catheter insertion site. Thin electrode catheters are introduced through blood vessels—commonly through the groin, although other access sites may sometimes be used—and carefully guided into the heart.
The electrodes record electrical activity from different areas of the heart. Small electrical impulses may also be delivered through the catheters to assess the heart's electrical pathways and attempt to reproduce the suspected abnormal rhythm in a controlled setting.
During an EP study, electrical signals recorded by specialized catheters can be used to map the heart's electrical activity.
This cardiac mapping helps identify the location and mechanism of an abnormal rhythm. This information can be particularly important when planning catheter ablation.
Although closely related, EPS and RFA are not the same procedure.
EPS (Electrophysiology Study) is primarily used to diagnose and map an abnormal heart rhythm.
RFA (Radiofrequency Ablation) is a treatment in which targeted radiofrequency energy is used to modify a small area of heart tissue responsible for certain abnormal electrical signals.
If an appropriate arrhythmia is identified during an EP study, catheter ablation may sometimes be performed during the same procedural session.
This is an important section for your website because you already have a separate RFA in Gurugram service page.
Depending on the patient's clinical situation, an EP study may help evaluate certain:
Supraventricular tachycardias (SVT) – Rapid rhythms that originate above the ventricles.
Atrial arrhythmias – Certain abnormal rhythms involving the upper chambers of the heart.
Ventricular arrhythmias – Rhythm abnormalities arising from the ventricles.
Bradycardia or conduction disorders – Selected patients with unusually slow heart rhythms or problems with electrical conduction may require additional assessment.
Unexplained syncope – In selected patients, EPS may form part of the evaluation for unexplained fainting when a cardiac rhythm problem is suspected.
Patients should follow the specific instructions given by their treating team. Preparation may include fasting before the procedure and reviewing current medicines.
The American Heart Association advises patients to tell their healthcare team about prescription medicines, over-the-counter medicines, herbs and vitamins, and not to stop medicines unless instructed to do so.
EPS is an invasive cardiac test and, like other catheter-based procedures, has potential risks.
Possible complications can include bleeding, bruising or infection at the catheter insertion site, blood-vessel complications, abnormal heart rhythms and blood clots. Less common but more serious complications can also occur.
Individual risks depend on the patient's condition and the type of electrophysiology procedure being performed.
After the catheters are removed, the access site is monitored for bleeding or swelling. Patients are observed during recovery, and discharge instructions depend on the findings and whether another procedure, such as ablation, was performed.
The results of the study help determine whether further treatment such as medication, RFA/catheter ablation, pacemaker implantation or AICD/ICD therapy may be appropriate.
Patients with suspected or diagnosed heart rhythm abnormalities can consult Dr. Sushant Mishra for cardiac evaluation and treatment planning.
An EPS may be considered when detailed assessment of the heart's electrical pathways is needed to identify the source of an arrhythmia and guide further management.
If you are experiencing recurrent palpitations, episodes of rapid heartbeat, dizziness, unexplained fainting or a diagnosed arrhythmia, consult Dr. Sushant Mishra for evaluation and to determine whether an Electrophysiology Study (EPS) is appropriate for your condition.
No. An ECG records electrical activity from electrodes placed on the skin. An EPS is an invasive test in which specialized electrode catheters are positioned inside the heart to study its electrical pathways in greater detail.
No. EPS is primarily a diagnostic and mapping procedure, while RFA is a catheter-based treatment used for certain arrhythmias.
Yes. When an appropriate abnormal electrical pathway is identified, catheter ablation may sometimes be performed during or immediately after the EP study.
The duration varies depending on the complexity of the case. The American Heart Association notes that an EP study may take approximately one to four hours.
No. The need for EPS depends on the patient's symptoms, ECG/rhythm findings, medical history and results of other investigations.
