When your child's heart rhythm is out of sync, there may be a problem with the electrical impulses in the heart. With the still-developing physiology and size of babies and children, specialized skills, anesthesia and diagnostics are critical to treat your child’s heart rhythm disturbances. Electrophysiology is performed with cardiac catheterization by placing special catheters into your child’s veins that are guided to the heart. These catheters have special electrodes that record electrical signals and pace the heart from various locations. Our electrophysiologists work side-by-side with our cardiologists to effectively treat these cases.