File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Temporary leadless pacing in heart failure patients with ultrasound-mediated stimulation energy and effects on the acoustic window

TitleTemporary leadless pacing in heart failure patients with ultrasound-mediated stimulation energy and effects on the acoustic window
Authors
Issue Date2009
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/heartrhythmjournal
Citation
Heart Rhythm, 2009, v. 6 n. 6, p. 742-748 How to Cite?
AbstractBackground: Left ventricular stimulation for cardiac resynchronization therapy is largely limited by access and anatomy of coronary veins. Objective: This study sought to apply ultrasound-mediated leadless pacing technology in heart failure patients and to evaluate the effects of respiration and body posture on the acoustic window. Methods: Patients with advanced heart failure and ejection fraction ≤35% were studied. An electrophysiology catheter incorporating a receiver electrode to deliver ultrasound-mediated pacing was positioned in the left ventricle. Ultrasound-mediated pacing thresholds were determined. The acoustic windows on the chest wall with the patient lying supine, titled 30° leftward, 30° rightward, and 30° upward were determined. The acoustic windows were also determined with computed tomography and transthoracic echocardiography. Simulated receiver movement with respiratory movement and body positioning was assessed with computed tomography. Results: Ten patients were studied. Ultrasound-mediated pacing was successful in all patients. The acoustic window measured 39.6 ± 18.2 cm2. The window size decreased with rightward tilt, and increased with leftward and upward tilt. They correlated with measurements made by transthoracic echocardiography and computed tomography. Target receiver movement of 1.2 ± 1.4 cm horizontally and 1.3 ± 0.8 cm vertically were estimated by computed tomography. Conclusion: The feasibility of leadless left ventricular stimulation was shown acutely in heart failure patients. The acoustic window validated by computed tomography was predicted by transthoracic echocardiography. Effects of respiration and body posture were evaluated for development of the future implantable device. © 2009 Heart Rhythm Society.
Persistent Identifierhttp://hdl.handle.net/10722/163245
ISSN
2015 Impact Factor: 4.391
2015 SCImago Journal Rankings: 2.756
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, KLen_US
dc.contributor.authorTse, HFen_US
dc.contributor.authorEcht, DSen_US
dc.contributor.authorLau, CPen_US
dc.date.accessioned2012-09-05T05:29:06Z-
dc.date.available2012-09-05T05:29:06Z-
dc.date.issued2009en_US
dc.identifier.citationHeart Rhythm, 2009, v. 6 n. 6, p. 742-748en_US
dc.identifier.issn1547-5271en_US
dc.identifier.urihttp://hdl.handle.net/10722/163245-
dc.description.abstractBackground: Left ventricular stimulation for cardiac resynchronization therapy is largely limited by access and anatomy of coronary veins. Objective: This study sought to apply ultrasound-mediated leadless pacing technology in heart failure patients and to evaluate the effects of respiration and body posture on the acoustic window. Methods: Patients with advanced heart failure and ejection fraction ≤35% were studied. An electrophysiology catheter incorporating a receiver electrode to deliver ultrasound-mediated pacing was positioned in the left ventricle. Ultrasound-mediated pacing thresholds were determined. The acoustic windows on the chest wall with the patient lying supine, titled 30° leftward, 30° rightward, and 30° upward were determined. The acoustic windows were also determined with computed tomography and transthoracic echocardiography. Simulated receiver movement with respiratory movement and body positioning was assessed with computed tomography. Results: Ten patients were studied. Ultrasound-mediated pacing was successful in all patients. The acoustic window measured 39.6 ± 18.2 cm2. The window size decreased with rightward tilt, and increased with leftward and upward tilt. They correlated with measurements made by transthoracic echocardiography and computed tomography. Target receiver movement of 1.2 ± 1.4 cm horizontally and 1.3 ± 0.8 cm vertically were estimated by computed tomography. Conclusion: The feasibility of leadless left ventricular stimulation was shown acutely in heart failure patients. The acoustic window validated by computed tomography was predicted by transthoracic echocardiography. Effects of respiration and body posture were evaluated for development of the future implantable device. © 2009 Heart Rhythm Society.en_US
dc.languageengen_US
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/heartrhythmjournalen_US
dc.relation.ispartofHeart Rhythmen_US
dc.rightsHeart Rhythm. Copyright © Elsevier Inc.-
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshCardiac Pacing, Artificial - Methodsen_US
dc.subject.meshElectrodes, Implanteden_US
dc.subject.meshEquipment Designen_US
dc.subject.meshFemaleen_US
dc.subject.meshHeart Failure - Therapyen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshPacemaker, Artificialen_US
dc.subject.meshSeverity Of Illness Indexen_US
dc.subject.meshStroke Volumeen_US
dc.subject.meshTime Factorsen_US
dc.subject.meshTreatment Outcomeen_US
dc.subject.meshUltrasonography, Interventional - Instrumentationen_US
dc.titleTemporary leadless pacing in heart failure patients with ultrasound-mediated stimulation energy and effects on the acoustic windowen_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.doi10.1016/j.hrthm.2009.02.025en_US
dc.identifier.pmid19427274-
dc.identifier.scopuseid_2-s2.0-65649133577en_US
dc.identifier.hkuros158848-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-65649133577&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume6en_US
dc.identifier.issue6en_US
dc.identifier.spage742en_US
dc.identifier.epage748en_US
dc.identifier.isiWOS:000266658800004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLee, KL=7501505962en_US
dc.identifier.scopusauthoridTse, HF=7006070805en_US
dc.identifier.scopusauthoridEcht, DS=7004097811en_US
dc.identifier.scopusauthoridLau, CP=7401968501en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats