How to Approach Difficult Cases of AVNRT

  title={How to Approach Difficult Cases of AVNRT},
  author={Darpan S Kumar and Thomas A Dewland and Seshadri Balaji and Charles A Henrikson},
  journal={Current Treatment Options in Cardiovascular Medicine},
Opinion statementOur approach to the ablation of atrioventricular nodal reciprocating tachycardia (AVNRT), the most common supraventricular tachycardia, is as follows: We first attempt ablation in the right atrial posteroseptum anterior to the coronary sinus ostium with a 4-mm non-irrigated tip catheter. If ablation within the triangle of Koch is unsuccessful with radiofrequency (RF), we switch to cryoablation and target a more superior (mid septal) region. We also utilize cryoablation if RF… 

Left sided ablation for Atrioventricular Nodal Re-entrant Tachycardia: Frequency, Characteristics and Outcomes

Supraventricular Tachycardia: An Unusual Side Effects of Cefuroxime

A 23-year-old healthy man, whose anaesthetic categorization is American Society of Anaesthesiologist (ASA) 1, developed supraventricular tachycardia (SVT) towards intravenous cefuroxime, perioperatively and his skin prick intradermal tests showed allergies towards cefazoline and cefoperazone.



Catheter ablation of paroxysmal supraventricular tachycardia.

Radiofrequency catheter ablation became first-line therapy for supraventricular tachycardia in patients with Wolff-Parkinson-White syndrome and AVNRT in the early 1990s and is described with a focus on approaches to ablation of the forms of accessory AV pathways and AVnRT that are difficult to ablate, as well as the less common variants.

Cryoablation versus radiofrequency ablation of atrioventricular nodal reentrant tachycardia

In patients undergoing AVNRT ablation, RF significantly reduces the risk of long-term arrhythmia recurrence compared to CRYO, but is associated with a higher risk of permanent atrioventricular block.

Cryothermal Ablation of the Slow Pathway for the Elimination of Atrioventricular Nodal Reentrant Tachycardia

The first successful slow pathway ablation using a novel catheter-based cryothermal technology for the elimination of atrioventricular nodal reentrant tachycardia (AVNRT) was achieved in patients with this novel technique.

Slow pathway catheter ablation of atrioventricular nodal re-entrant tachycardia guided by electroanatomical mapping: a randomized comparison to the conventional approach.

  • H. KopelmanS. PraterF. TondatoN. ChronosN. Peters
  • Medicine
    Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology
  • 2003
While both conventional and non-fluoroscopic electroanatomical mapping are associated with excellent results in guiding ablation of typical AVNRT, the latter offers significantly shorter procedure and fluoroscopy times, improving the efficiency of the procedure and reducing X-ray exposure.

Percutaneous catheter modification of the atrioventricular node. A potential cure for atrioventricular nodal reentrant tachycardia.

Percutaneous catheter AV nodal modification appears to be a promising technique for treatment of refractory AVNRT and may obviate need for complete AV junctional ablation in a substantial number of patients with drug/pacemaker refractors.

Cryoablation Versus Radiofrequency Energy for the Ablation of Atrioventricular Nodal Reentrant Tachycardia (the CYRANO Study): Results From a Large Multicenter Prospective Randomized Trial

Cryoablation for AVNRT is as effective as RFCA over the short term but is associated with a higher recurrence rate at the 6-month follow-up, and the potential benefits of cryoenergy relative to ablation safety and pain perception are counterbalanced by longer procedure times, more device problems, and a high recurrence rates.

Treatment of supraventricular tachycardia due to atrioventricular nodal reentry by radiofrequency catheter ablation of slow-pathway conduction.

Catheter ablation of the atrial end of the slow pathway using radiofrequency current, guided by ASP potentials, can eliminate AVNRT with very little risk of atrioventricular block.

Absence of junctional rhythm during successful slow-pathway ablation in patients with atrioventricular nodal reentrant tachycardia.

By multivariate analysis, location of ablation sites, atrial/ventricular electrogram amplitude ratio, absence of a multicomponent or slow-pathway potential, and occurrence of the fast-slow form of tachycardia were independent predictors of the presence of a junctional rhythm during successful slow- Pathway ablation.