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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. AV nodal reentrant tachycardia (AVNRT), or atrioventricular nodal reentrant tachycardia, is a type of tachycardia (fast rhythm) of the heart. It is a type of supraventricular tachycardia (SVT), meaning that it originates from a location within the heart above the bundle of His. AV nodal reentrant tachycardia is the most common regular supraventricular tachycardia. It is more common in women than men (approximately 75% of cases occurring in females). The main symptom is palpitations. Treatment may be with specific physical maneuvers, medication, or rarely DC cardioversion. Frequent attacks may require radiofrequency ablation, in which the abnormally conducting tissue in the heart is destroyed. AVNRT occurs when a reentry circuit forms within or just next to the atrioventricular node. The circuit usually involves two anatomical pathways: the fast pathway and the slow pathway, which are both in the right atrium. The slow pathway (which is usually targeted for ablation) is located inferiorly and slightly posterior to the AV node, often following the anterior margin of the coronary sinus.
Most of the current treatment modalities in cardiology relieve symptoms but not result a real cure,however,interruption of a reentrant pathway or elimination of an arrhythmic focus can result in a permanent cure.this book make the challenging and exciting topic of cardiac electrophysiology accessible to all interested individuals,furthermore it instructs our readers on the concepts and practices taught at our institution.I understand that elctrophysiology is a rapidly evolving field and that it is impossible to comprehensievely and definitively cover such a dynamic topic but i believe that the ideas and the techniques presented within this book will help make electrophysiology accessible to those individuals who have a desire to learn it.
OBJECTIVES: This study's aim is to determine the efficacy of adrenaline in substituting Isoprenaline for inducing ischemic ventricular tachycardia (VT) in patients with an old myocardial infarction, who are already being prescribed Amiodarone.METHODS: Between January 2002 and December 2016 in the Rehabilitation Hospital in Cluj-Napoca there was conducted an electrophysiological study, which had the purpose to induce VT in 106 patients. Following the inclusion and exclusion criterias, 2 groups were formed: a study group of 12 patients and a control group of 22.RESULTS: During electrophysiological studies, when Adrenalin was administered i.v, there was a successful induction of VT in 6 patients (50%). Despite the fact that there was adrenalin administered, the other 6 patients did not respond, thus the VT induction could not be maintained.CONCLUSIONS: Following the electrophysiological study it was proved that adrenalin is efficient in inducing ischemic VT, in patients following treatment with Amiodarone. This method of VT induction is useful for patients in need of an activation map or to verify the efficacy of the ablation, and can be used when Isoprenaline is not available.
The exact mechanism of a cardiac arrhythmia becomes fundamentally important when treatment can be directed specifically toward that mechanism. Advances in body surface electrograms and mapping techniques have allowed the causes of ventricular tachyarrhythmias to be pinpointed, thus suggesting viable targets for ablation therapy.
Describes best practices in Ventricular Tachycardia and Fibrillation Ablation based on a consensus of the world's leading experts, based on the annual 'Venice Arrythmias' meeting Catheter ablation of atrial fibrillation has become a widespread, yet controversial, treatment modality in electrophysiology laboratories Presents a comprehensive and up-to-date overview of all the most important and debated aspects of atrial fibrillation ablation Covers all key topics, from pre- and intra-procedural management to best techniques and outcomes for patients with and without structural HD to Indications for VT/VF ablation and hybrid therapy to future tools and treatment options