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Electrophysiology Laboratory and Arrhythmia Service

The Electrophysiology Laboratory is Connecticut’s only congenital electrophysiology program, serving pediatric and adult congenital heart disease patients. Shailendra Upadhyay, MD, CEPS, FHRS, director of the electrophysiology laboratory, is the only pediatric electrophysiologist in Connecticut, certified by the International Board of Heart Rhythm Examiners. The electrophysiology laboratory provides the diagnostic and interventional procedures for the neonates, infants, children, adolescents, and adults cared for by Connecticut Children’s.

Examples of arrhythmia disorder management offered at Connecticut Children’s include:

  • Supraventricular tachycardia
  • Wolff-Parkinson White (WPW) syndrome
  • Atrial tachycardia/Ectopic atrial tachycardia
  • Atrial Flutter and Atrial Fibrillation
  • Ventricular tachycardia and ventricular premature beats
  • Exercise stress testing
  • Inherited arrhythmia disorders such as:
    • Long QT syndrome/Short QT syndrome
    • Brugada syndrome
    • Catecholaminergic polymorphic ventricular tachycardia (CPVT)
  • Unexplained syncope
  • Inpatient management of heart rhythm disorders
  • Dedicated pediatric pacemaker and implantable cardioverter defibrillator (ICD) clinic housed by a pediatric electrophysiologist and pacemaker nurse

Dr. Upadhyay and the Electrophysiology team have expertise in:

  • Catheter ablation of supra-ventricular tachycardia/ventricular tachycardia with both Radiofrequency and CRYO ablation modalities
  • Use of three dimensional electro-anatomic mapping system to perform catheter ablation with minimum or no X-ray use
  • Trans-esophageal electrophysiology study
  • Implantation of patient activated loop monitors
  • Implantation of cardiac pacemakers
  • Implantation of ICD

Cardio-Pulmonary Exercise Stress Testing

Connecticut Children’s offers comprehensive metabolic stress testing for children and adult congenital heart disease. Stress testing helps in diagnosis of exercise induced heart rhythm abnormalities. The tests are performed and interpreted by qualified cardiologists.

Quality and Safety

The Electrophysiology Laboratory at Connecticut Children’s is an active participant in the Improving Pediatric and Adult Congenital Treatment (IMPACT) registry. The registry measures the prevalence, demographics, management, and outcomes of patients undergoing electrophysiology study, catheter ablation and implantation of cardiac rhythm management devices (such as pacemakers and ICDs).

Our group provides state-of-the-art 3D arrhythmia mapping, leading to Connecticut’s first zero-radiation electrophysiology procedure in children. Zero X-ray catheter ablations in children are performed across very few programs in the country.

Physician and Clinical Staff




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