A reliable fossa ovalis impedance mapping for safer transseptal puncture: A new vision beyond voltage.
atrial fibrillation
catheter ablation
electroanatomic mapping
fossa ovalis
impedance
transseptal puncture
zero fluoroscopy
Journal
Journal of cardiovascular electrophysiology
ISSN: 1540-8167
Titre abrégé: J Cardiovasc Electrophysiol
Pays: United States
ID NLM: 9010756
Informations de publication
Date de publication:
12 2021
12 2021
Historique:
revised:
09
09
2021
received:
03
06
2021
accepted:
29
09
2021
pubmed:
20
10
2021
medline:
22
2
2022
entrez:
19
10
2021
Statut:
ppublish
Résumé
Transseptal puncture (TSP) is widely used in clinical practice but is negatively affected by a nonneglectable rate of complications and X-ray exposure. To address these problems, we investigated whether or not impedance mapping could correctly identify fossa ovalis (FO) and safely guide TSP. Electroanatomic mapping was performed with CARTO 3 system version 7 and a ThermoCool® SmartTouch® mapping catheter was employed. In each patient, an impedance map and a bipolar voltage map of the whole interatrial septum were collected, acquiring at least 150 points with a contact force ≥2 g and using the pattern matching filter. Thirty-five patients were enrolled. A low impedance area was clearly identified in 34 of them. In 30 patients (88%), the FO was located in the low impedance area. The map was obtained in sinus rhythm in 17 cases (50%); in 15 of these (88%), the TSP site, the patent foramen ovale, or the FO tenting area fell inside the low impedance area. The same numbers were observed when mapping during atrial fibrillation. To the best of our knowledge, this is the first study that provides the reliability and reproducibility of impedance mapping in identifying FO, an affordable and feasible tool that could be potentially introduced into clinical practice.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
3270-3274Informations de copyright
© 2021 Wiley Periodicals LLC.
Références
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