From High-Density Mapping to Low-Density Mapping
| Autor: | Jenson Maldonado Chavez, Xavier Viñolas Prat, Amin El Amrani Rami, Francisco Méndez Zurita, Bieito Campos García, Hildemari Espinosa Viamonte, Oscar Alcalde Rodríguez, Enrique Rodríguez Font, Pelayo Torner Montoya, Zoraida Moreno Weidmann, Jose M. Guerra, Carlos González Matos, Concepción Alonso-Martín |
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| Rok vydání: | 2020 |
| Předmět: |
Tachycardia
medicine.medical_specialty business.industry medicine.medical_treatment High density 030204 cardiovascular system & hematology Ablation 03 medical and health sciences 0302 clinical medicine Left atrial Internal medicine cardiovascular system Low density Cardiology medicine Re entrant cardiovascular diseases 030212 general & internal medicine medicine.symptom Entrainment mapping Entrainment (chronobiology) business |
| Zdroj: | JACC: Clinical Electrophysiology. 6:523-532 |
| ISSN: | 2405-500X |
| DOI: | 10.1016/j.jacep.2019.12.001 |
| Popis: | Objectives The aim of this study was to describe a mapping approach for ablation of complex atrial re-entrant tachycardias (ARTs) in which high-density activation maps are transformed into low-density activation maps displaying only the active part of the tachycardia circuit. Background High-density activation maps during complex ARTs are challenging to interpret because they include the activation patterns of active and passive circuits. Entrainment mapping provides the identification of the active tachycardia circuit. However, current electroanatomic mapping systems are not capable of color-coding the information obtained from entrainment maneuvers. Methods Seventeen consecutive patients with atypical atrial flutter were included. A high-density activation map was acquired during index tachycardia. Subsequently, entrainment maneuvers were performed to generate a low-density activation map in which only the activation of the atria directly involved in the flutter circuit was displayed. Results Of all patients included, 82% were men, and their mean age was 62 ± 7 years. Structural heart disease was present in 59%, and 53% had undergone prior left atrial ablation procedures. Low-density activation maps were successfully generated from an average of 14 ± 3 entrainment points. Twenty circuits (95%) were identified in the left atrium and 1 (5%) in the right atrium. Ablation guided by low-density mapping successfully terminated all ARTs in 267 ± 353 s of radiofrequency application. Conclusions Low-density mapping based on entrainment maneuvers provides a precise delineation of the active circuit during complex ARTs and resulted in successful arrhythmia termination. This approach can be easily incorporated into clinical practice. |
| Databáze: | OpenAIRE |
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