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Article: Detection of atrial fibrillation during sinus tachycardia induced by exercise in patients with implantable atrial defibrillators

TitleDetection of atrial fibrillation during sinus tachycardia induced by exercise in patients with implantable atrial defibrillators
Authors
Issue Date1999
PublisherWiley-Blackwell Publishing, Inc. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0147-8389&site=1
Citation
Pace - Pacing And Clinical Electrophysiology, 1999, v. 22 n. 1 II, p. 247-252 How to Cite?
AbstractAccurate detection of atrial fibrillation (AF) is essential for appropriate operation of an implantable atrial defibrillator (IAD). However, during episodes of sinus tachycardia, distinction between AF and sinus rhythm (SR) using the 'quiet interval' and 'baseline crossing' analysis in the detection algorithm of the IAD may be difficult. The efficacy of this AF detection algorithm was tested in five patients implanted with an IAD (METRIX, Model 3000 or 3020, InControl Inc.) during treadmill exercise testing. The IADs were programmed to Monitor Mode with a wake up cycle of 1 minute for AF detection using the device nominal parameters or modified parameters, and to mark rhythms appropriate for shock delivery. A mean peak heart rate of 137 ± 26 beats/min was reached during maximum exercise, and one patient developed transient AF. Seventy-eight (75 in SR, 3 in AF) and 91 (89 in SR, 2 in AF) runs of AF detection were performed using the nominal and modified parameters, respectively. The IAD detected AF and SR accurately, except for one episode of false-positive AF detection during sinus tachycardia at the nominal settings, but inappropriate shocks were prevented by minimum RR interval criteria that limited discharge at high heart rate. These results indicate that the AF detection algorithm in the IAD may become more vulnerable to false-positive AF detection during sinus tachycardia, which were avoided by reprogramming the Quiet Interval and minimum RR interval criteria for AF detection. Exercise testing appeared useful to program optimal settings of the IAD in preparation for daily activities.
Persistent Identifierhttp://hdl.handle.net/10722/77107
ISSN
2015 Impact Factor: 1.156
2015 SCImago Journal Rankings: 0.662
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTse, HFen_HK
dc.contributor.authorLau, CPen_HK
dc.contributor.authorAyers, GMen_HK
dc.date.accessioned2010-09-06T07:28:20Z-
dc.date.available2010-09-06T07:28:20Z-
dc.date.issued1999en_HK
dc.identifier.citationPace - Pacing And Clinical Electrophysiology, 1999, v. 22 n. 1 II, p. 247-252en_HK
dc.identifier.issn0147-8389en_HK
dc.identifier.urihttp://hdl.handle.net/10722/77107-
dc.description.abstractAccurate detection of atrial fibrillation (AF) is essential for appropriate operation of an implantable atrial defibrillator (IAD). However, during episodes of sinus tachycardia, distinction between AF and sinus rhythm (SR) using the 'quiet interval' and 'baseline crossing' analysis in the detection algorithm of the IAD may be difficult. The efficacy of this AF detection algorithm was tested in five patients implanted with an IAD (METRIX, Model 3000 or 3020, InControl Inc.) during treadmill exercise testing. The IADs were programmed to Monitor Mode with a wake up cycle of 1 minute for AF detection using the device nominal parameters or modified parameters, and to mark rhythms appropriate for shock delivery. A mean peak heart rate of 137 ± 26 beats/min was reached during maximum exercise, and one patient developed transient AF. Seventy-eight (75 in SR, 3 in AF) and 91 (89 in SR, 2 in AF) runs of AF detection were performed using the nominal and modified parameters, respectively. The IAD detected AF and SR accurately, except for one episode of false-positive AF detection during sinus tachycardia at the nominal settings, but inappropriate shocks were prevented by minimum RR interval criteria that limited discharge at high heart rate. These results indicate that the AF detection algorithm in the IAD may become more vulnerable to false-positive AF detection during sinus tachycardia, which were avoided by reprogramming the Quiet Interval and minimum RR interval criteria for AF detection. Exercise testing appeared useful to program optimal settings of the IAD in preparation for daily activities.en_HK
dc.languageengen_HK
dc.publisherWiley-Blackwell Publishing, Inc. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0147-8389&site=1en_HK
dc.relation.ispartofPACE - Pacing and Clinical Electrophysiologyen_HK
dc.subject.meshAgeden_HK
dc.subject.meshAlgorithmsen_HK
dc.subject.meshAtrial Fibrillation - diagnosis - etiology - physiopathologyen_HK
dc.subject.meshDefibrillators, Implantableen_HK
dc.subject.meshElectric Countershock - instrumentationen_HK
dc.subject.meshElectrophysiology - methodsen_HK
dc.subject.meshExerciseen_HK
dc.subject.meshExercise Test - adverse effectsen_HK
dc.subject.meshFemaleen_HK
dc.subject.meshFollow-Up Studiesen_HK
dc.subject.meshHeart Rateen_HK
dc.subject.meshHumansen_HK
dc.subject.meshMaleen_HK
dc.subject.meshMiddle Ageden_HK
dc.subject.meshReproducibility of Resultsen_HK
dc.subject.meshTachycardia, Sinus - etiology - physiopathologyen_HK
dc.titleDetection of atrial fibrillation during sinus tachycardia induced by exercise in patients with implantable atrial defibrillatorsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0147-8389&volume=22&spage=247&epage=252&date=1999&atitle=Detection+of+atrial+fibrillation+during+sinus+tachycardia+induced+by+exercise+in+patients+with+implantable+atrial+defibrillatorsen_HK
dc.identifier.emailTse, HF:hftse@hkucc.hku.hken_HK
dc.identifier.authorityTse, HF=rp00428en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1540-8159.1999.tb00342.xen_HK
dc.identifier.pmid9990640-
dc.identifier.scopuseid_2-s2.0-0032902346en_HK
dc.identifier.hkuros41417en_HK
dc.identifier.hkuros39376-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032902346&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume22en_HK
dc.identifier.issue1 IIen_HK
dc.identifier.spage247en_HK
dc.identifier.epage252en_HK
dc.identifier.isiWOS:000078372000021-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTse, HF=7006070805en_HK
dc.identifier.scopusauthoridLau, CP=7401968501en_HK
dc.identifier.scopusauthoridAyers, GM=7102015157en_HK

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