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In Dr. Paylos’ Cardiac Electrophysiology Unit, we carry out studies, diagnostic appraisal, and risk stratification in patients with:

  • Rhythm or conduction disorders
  • Dizziness / syncope or Presyncope of unknown ethology
  • Sudden cardiac death / aborted or resuscitated
  • Heart failure, which we help to diagnose and treat

To do this, on many occasions and with many procedures, we need to use electrical catheterization, consisting in the introduction of a variable number of electrocatheters to record the heart’s normal cardiac electrical activity, the generation of electrical impulses and their conduction from the atrium to the ventricles, and subsequently bring to light—using a process of programmed electrical stimulation of the heart—any possible electrical circuits responsible for causing and/or perpetuating abnormal intramyocardial continuous rapid loops of tachycardia that could clinically compromise the patient. To do this, the heart’s activation time must be identified with millimetric precision, measured in milliseconds using sophisticated systems with advanced technology that allow cardiac electrical activity mapping with millimetric and mathematical precision.

This special electrical catheterization is known as an ELECTROPHYSIOLOGICAL STUDY, and the therapeutic procedure usually carried out after the study and which consists of removing the abnormal electrical tissue responsible for tachyarrhythmia is called ABLATION. Ablation can be performed by radiofrequency, producing the least thermal injury between 45°C and 60°C, enough to destroy the responsible abnormal electrical tissue, or by cold , which produces thermal injury by freezing, used to electrically isolate the pulmonary veins of the left atrium, or even in some supraventricular tachycardias in children, in locations of the electrical circuit that are abnormal or next to the conduction system, with less possibility of causing a block.