Electrophysiological Study And Transcatheter Ablation

Electrophysiological study can be useful in evaluating a broad spectrum of cardiac arrhythmias. It can help to: (1) assess the function of the sinus and atrioventricular nodes and the His-Purkinje system; (2) determine the characteristics of reentry tachycardias; (3) assess the efficacy of antiarrhythmic drugs and devices; (4) map the location of arrhythmogenic foci; and (5) identify sites for ablation to treat many forms of tachycardia.

Electrophysiological study is performed in a laboratory similar to a heart catheterization laboratory. The minimum equipment requirement for a comprehensive electrophysiological study includes: (1) a radiographic table; (2) a fluoroscopy unit; (3) a physiological recording and analysis system; (4) a programmable stimulator; (5) a radiofrequency generator; (6) a variety of electrode catheters and introducers; (7) the capability of providing a sterile working environment; and (8) resuscitation equipment.

An electrophysiological study is usually performed on fasting and antiarrhythmic drug-free patients in a sterilized fashion using various degrees of conscious sedation (fentanyl and midazolam), depending on the specific procedure. Vascular accesses are obtained percutaneously through the femoral, subclavian, or internal jugular veins using 1% lidocaine for local

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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