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Article: Initial clinical experience of remote magnetic navigation system for catheter mapping and ablation of supraventricular tachycardias
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TitleInitial clinical experience of remote magnetic navigation system for catheter mapping and ablation of supraventricular tachycardias
 
AuthorsXu, D2
Yang, B2
Shan, Q2
Zou, J2
Chen, M2
Chen, C2
Hou, X2
Zhang, F2
Li, WQ2
Cao, K2
Tse, HF1
 
Issue Date2009
 
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=1383-875X
 
CitationJournal Of Interventional Cardiac Electrophysiology, 2009, v. 25 n. 3, p. 171-174 [How to Cite?]
DOI: http://dx.doi.org/10.1007/s10840-008-9356-5
 
AbstractBackground: A remote magnetic navigation system (MNS) has been developed for mapping and catheter ablation of cardiac arrhythmias. The present study evaluates the safety and feasibility of this system to perform radiofrequency (RF) ablation in patients with supraventricular tachycardias (SVT). Methods: A total of 32 patients (22 female; mean age 44∈±∈16 years) with documented SVT underwent mapping and ablation using Helios II (a 4-mm-tip magnetic catheter), under the guidance of the MNS (Niobe II, Stereotaxis, Inc.). Results: Catheter ablation procedure with MNS was successful in 30/32 (94%) patients including all patients (27/27, 100%) with atrioventricular nodal reentrant tachycardia (AVNRT) and three of five patients (60%) with atrioventricular reentrant tachycardia (AVRT) without any complication. The procedural successful rate in patients with AVNRT was significantly higher than those in patients with AVRT (P∈<∈0.001). Overall, the medium number of RF application using the MNS was 2 (mean 2.7∈±∈1.6, range 1 to 7), and the medium numbers of RF for AVNRT and AVRT were 2 and 3, respectively. There was no significant difference in the mean procedural time between patients with AVNRT and AVRT (126.3∈±∈38.6 vs. 138.0∈±∈40.3 min, P∈=∈0.54). However, the mean fluoroscopy time was significantly shorter in patients with AVNRT than those with AVRT (5.7∈±∈3.0 vs. 16.5∈±∈2.5 min, P∈<∈0.001). Among those patients with AVNRT, the mean procedural time (139.3∈±∈45.0 vs. 112.3∈±∈24.9 min, P∈=∈0.07) and fluoroscopic time (3.2∈±∈1.0 vs. 8.0∈±∈2.2 min, P∈<∈0.001) were shorter for the later 13 patients than the first 14 patients, suggesting a learning curve in using the MNS for RF ablation. Conclusions: The Niobe MNS is a new technique that can allow safe and effective remote-controlled navigation and minimize the need for fluoroscopic guidance for ablation catheter of AVNRT. However, further improvement is required to achieve a higher successful rate for treatment of AVRT. © 2009 Springer Science+Business Media, LLC.
 
ISSN1383-875X
2013 Impact Factor: 1.552
2013 SCImago Journal Rankings: 1.073
 
DOIhttp://dx.doi.org/10.1007/s10840-008-9356-5
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorXu, D
 
dc.contributor.authorYang, B
 
dc.contributor.authorShan, Q
 
dc.contributor.authorZou, J
 
dc.contributor.authorChen, M
 
dc.contributor.authorChen, C
 
dc.contributor.authorHou, X
 
dc.contributor.authorZhang, F
 
dc.contributor.authorLi, WQ
 
dc.contributor.authorCao, K
 
dc.contributor.authorTse, HF
 
dc.date.accessioned2012-09-05T05:29:20Z
 
dc.date.available2012-09-05T05:29:20Z
 
dc.date.issued2009
 
dc.description.abstractBackground: A remote magnetic navigation system (MNS) has been developed for mapping and catheter ablation of cardiac arrhythmias. The present study evaluates the safety and feasibility of this system to perform radiofrequency (RF) ablation in patients with supraventricular tachycardias (SVT). Methods: A total of 32 patients (22 female; mean age 44∈±∈16 years) with documented SVT underwent mapping and ablation using Helios II (a 4-mm-tip magnetic catheter), under the guidance of the MNS (Niobe II, Stereotaxis, Inc.). Results: Catheter ablation procedure with MNS was successful in 30/32 (94%) patients including all patients (27/27, 100%) with atrioventricular nodal reentrant tachycardia (AVNRT) and three of five patients (60%) with atrioventricular reentrant tachycardia (AVRT) without any complication. The procedural successful rate in patients with AVNRT was significantly higher than those in patients with AVRT (P∈<∈0.001). Overall, the medium number of RF application using the MNS was 2 (mean 2.7∈±∈1.6, range 1 to 7), and the medium numbers of RF for AVNRT and AVRT were 2 and 3, respectively. There was no significant difference in the mean procedural time between patients with AVNRT and AVRT (126.3∈±∈38.6 vs. 138.0∈±∈40.3 min, P∈=∈0.54). However, the mean fluoroscopy time was significantly shorter in patients with AVNRT than those with AVRT (5.7∈±∈3.0 vs. 16.5∈±∈2.5 min, P∈<∈0.001). Among those patients with AVNRT, the mean procedural time (139.3∈±∈45.0 vs. 112.3∈±∈24.9 min, P∈=∈0.07) and fluoroscopic time (3.2∈±∈1.0 vs. 8.0∈±∈2.2 min, P∈<∈0.001) were shorter for the later 13 patients than the first 14 patients, suggesting a learning curve in using the MNS for RF ablation. Conclusions: The Niobe MNS is a new technique that can allow safe and effective remote-controlled navigation and minimize the need for fluoroscopic guidance for ablation catheter of AVNRT. However, further improvement is required to achieve a higher successful rate for treatment of AVRT. © 2009 Springer Science+Business Media, LLC.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationJournal Of Interventional Cardiac Electrophysiology, 2009, v. 25 n. 3, p. 171-174 [How to Cite?]
DOI: http://dx.doi.org/10.1007/s10840-008-9356-5
 
dc.identifier.citeulike4150239
 
dc.identifier.doihttp://dx.doi.org/10.1007/s10840-008-9356-5
 
dc.identifier.epage174
 
dc.identifier.hkuros160258
 
dc.identifier.issn1383-875X
2013 Impact Factor: 1.552
2013 SCImago Journal Rankings: 1.073
 
dc.identifier.issue3
 
dc.identifier.pmid19263204
 
dc.identifier.scopuseid_2-s2.0-68749102048
 
dc.identifier.spage171
 
dc.identifier.urihttp://hdl.handle.net/10722/163264
 
dc.identifier.volume25
 
dc.languageeng
 
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=1383-875X
 
dc.publisher.placeUnited States
 
dc.relation.ispartofJournal of Interventional Cardiac Electrophysiology
 
dc.relation.referencesReferences in Scopus
 
dc.subject.meshAdolescent
 
dc.subject.meshAdult
 
dc.subject.meshAged
 
dc.subject.meshBody Surface Potential Mapping - Instrumentation - Methods
 
dc.subject.meshCatheter Ablation - Instrumentation - Methods
 
dc.subject.meshEquipment Design
 
dc.subject.meshFemale
 
dc.subject.meshHumans
 
dc.subject.meshMagnetics - Instrumentation
 
dc.subject.meshMale
 
dc.subject.meshMiddle Aged
 
dc.subject.meshPilot Projects
 
dc.subject.meshSurgery, Computer-Assisted - Instrumentation - Methods
 
dc.subject.meshTachycardia, Supraventricular - Diagnosis - Surgery
 
dc.subject.meshTreatment Outcome
 
dc.subject.meshYoung Adult
 
dc.titleInitial clinical experience of remote magnetic navigation system for catheter mapping and ablation of supraventricular tachycardias
 
dc.typeArticle
 
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<contributor.author>Yang, B</contributor.author>
<contributor.author>Shan, Q</contributor.author>
<contributor.author>Zou, J</contributor.author>
<contributor.author>Chen, M</contributor.author>
<contributor.author>Chen, C</contributor.author>
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Author Affiliations
  1. The University of Hong Kong
  2. Nanjing Medical University