When patients experience irregular heart rhythms they are often referred to a cardiac electrophysiologist. This is a cardiologist specializing in the study of electrical pulses in the heart. The Electrophysiology Lab, or EP Lab for short, is designed to treat patients who suffer from heart arrhythmias and atrial fibrillation with a treatment called ablation. This is a procedure in which an energy source like heat is guided to the inside of the heart using catheters. The heat is used to ablate or remove specific heart cells triggering the irregular electrical impulses.


Electrophysiologists at St. Mark’s Hospital use an advanced Stereotaxis system for heart ablations. Stereotaxis is a technology where metal tipped catheters are guided through a patient’s blood vessels into their heart with the aid of powerful magnets controlled by an Electrophysiologist. This technology allows for extremely precise movements, which reduces the chance of perforations and other potentially harmful outcomes.

Electrophysiology Procedures

  • pacemakers
  • ICDs
  • biventricular ICD
  • subcutaneous ICD
  • lead extraction
  • ablations
  • ventricular tachycardia and SVT
  • PVC

Meet Our Electrophysiologist

Dr. Eifling has an undergraduate degree in molecular biology, and completed his medical degree and residency at the University of Colorado. He also completed a cardiovascular disease fellowship and a clinical cardiac electrophysiology fellowship at the Texas Heart Institute in Houston, Texas, where he was chief cardiology fellow.
Dr. Eifling has served on multiple EP advisory boards and is a member of the Heart Rhythm Society. He has led medical expeditions to remote regions of the Himalayan Mountains where he provided care to underserved residents of India and Tibet and directed the care of patients with rheumatic heart disease.

To make an appointment with Dr. Eifling, call (855) 413-7829.