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Article: Initial clinical experience of remote magnetic navigation system for catheter mapping and ablation of supraventricular tachycardias

TitleInitial clinical experience of remote magnetic navigation system for catheter mapping and ablation of supraventricular tachycardias
Authors
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
Citation
Journal Of Interventional Cardiac Electrophysiology, 2009, v. 25 n. 3, p. 171-174 How to Cite?
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.
Persistent Identifierhttp://hdl.handle.net/10722/163264
ISSN
2015 Impact Factor: 1.676
2015 SCImago Journal Rankings: 0.930
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, Den_US
dc.contributor.authorYang, Ben_US
dc.contributor.authorShan, Qen_US
dc.contributor.authorZou, Jen_US
dc.contributor.authorChen, Men_US
dc.contributor.authorChen, Cen_US
dc.contributor.authorHou, Xen_US
dc.contributor.authorZhang, Fen_US
dc.contributor.authorLi, WQen_US
dc.contributor.authorCao, Ken_US
dc.contributor.authorTse, HFen_US
dc.date.accessioned2012-09-05T05:29:20Z-
dc.date.available2012-09-05T05:29:20Z-
dc.date.issued2009en_US
dc.identifier.citationJournal Of Interventional Cardiac Electrophysiology, 2009, v. 25 n. 3, p. 171-174en_US
dc.identifier.issn1383-875Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/163264-
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.en_US
dc.languageengen_US
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=1383-875Xen_US
dc.relation.ispartofJournal of Interventional Cardiac Electrophysiologyen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshBody Surface Potential Mapping - Instrumentation - Methodsen_US
dc.subject.meshCatheter Ablation - Instrumentation - Methodsen_US
dc.subject.meshEquipment Designen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshMagnetics - Instrumentationen_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshPilot Projectsen_US
dc.subject.meshSurgery, Computer-Assisted - Instrumentation - Methodsen_US
dc.subject.meshTachycardia, Supraventricular - Diagnosis - Surgeryen_US
dc.subject.meshTreatment Outcomeen_US
dc.subject.meshYoung Adulten_US
dc.titleInitial clinical experience of remote magnetic navigation system for catheter mapping and ablation of supraventricular tachycardiasen_US
dc.typeArticleen_US
dc.identifier.emailTse, HF:hftse@hkucc.hku.hken_US
dc.identifier.authorityTse, HF=rp00428en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/s10840-008-9356-5en_US
dc.identifier.pmid19263204-
dc.identifier.scopuseid_2-s2.0-68749102048en_US
dc.identifier.hkuros160258-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-68749102048&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume25en_US
dc.identifier.issue3en_US
dc.identifier.spage171en_US
dc.identifier.epage174en_US
dc.identifier.isiWOS:000268581800003-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridXu, D=9134031800en_US
dc.identifier.scopusauthoridYang, B=7404472246en_US
dc.identifier.scopusauthoridShan, Q=7007145024en_US
dc.identifier.scopusauthoridZou, J=7401551811en_US
dc.identifier.scopusauthoridChen, M=7406352614en_US
dc.identifier.scopusauthoridChen, C=35285535600en_US
dc.identifier.scopusauthoridHou, X=35102356800en_US
dc.identifier.scopusauthoridZhang, F=36140901800en_US
dc.identifier.scopusauthoridLi, WQ=7501792007en_US
dc.identifier.scopusauthoridCao, K=7102713181en_US
dc.identifier.scopusauthoridTse, HF=7006070805en_US
dc.identifier.citeulike4150239-

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