Muscle Noise Effects on Atrial Evoked Response Sensing: Implications on Atrial Auto-Threshold and Auto-Capture Determination.
Automatic pacing capture verification algorithms that are based on detection of local evoked response signals are susceptible to interference from myopotential noise. This is especially true in the atrium where the lower signal amplitude and signal-to-noise ratio make pacing capture verification mor...
| Publicado en: | Pacing & Clinical Electrophysiology Vol. 34; no. 4; pp. 460 - 467 |
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| Autores principales: | , , , , , |
| Formato: | equations & formulas pictorial research tables/charts tracings Journal Article |
| Publicado: |
Wiley-Blackwell
Apr2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104863075&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104863075 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01478389 4F8 jtl: Pacing & Clinical Electrophysiology issn: 01478389 maglogo: Y pubinfo: dt: Apr2011 vid: 34 iid: 4 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 104863075 59765716 10.1111/j.1540-8159.2010.02992.x NLM21208231 104863075 ppf: 460 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Muscle Noise Effects on Atrial Evoked Response Sensing: Implications on Atrial Auto-Threshold and Auto-Capture Determination. aug: au: Tse, Hung-Fat Saha, Sunipa Garg, Ankur Bohn, Derek Lee, Yim Ling Lau, Chu-Pak affil: Cardiology Division, Department of Medicine, the University of Hong Kong, Hong Kong, China sug: subj: Heart Atrium Physiology Cardiac Pacing, Artificial Adverse Effects Noise Adverse Effects Electrodes, Implanted Adverse Effects Equipment Failure Artifacts Adverse Effects Observational Methods Prospective Studies Movement Human Paired T-Tests Analysis of Variance Male Female Aged, 80 and Over Aged Activities of Daily Living Physiology Algorithms Funding Source Aged, 80 & over Aged: 65+ years Male Female ab: Automatic pacing capture verification algorithms that are based on detection of local evoked response signals are susceptible to interference from myopotential noise. This is especially true in the atrium where the lower signal amplitude and signal-to-noise ratio make pacing capture verification more challenging. The aim of this study is to evaluate the impact of myopotential noise induced by various maneuvers on the atrial evoked response (AER) signal. Data were collected from 18 patients (7 M/11 F, 77.6 ± 8.8 years), implanted with a dual chamber rate response (DDDR) pacemaker and acute and chronic right atrial leads and right ventricular leads, at three regular follow-up visits scheduled at 1, 3, and 6 months after pacemaker implantation or replacement procedures. During each study visit, manual atrial pacing threshold tests during unipolar pacing in the DDD mode were conducted with two evoked response sensing configurations (RA→ Ind and RA→ V) while patients performed six different maneuvers. Noise estimates were calculated for each maneuver. The greatest noise estimates in both sensing configurations were measured during the hand-pressing exercise (0.649 ± 0.342 mV in the RA→ Ind vector, 0.309 ± 0.223 mV in the RA→ V vector). No significant differences in overall noise estimates were observed between the follow-up visits. Of the beats that exhibited noise estimates greater than a sensing floor of 0.3 mV, up to 22% of cardiac beats had a signal-to-noise ratio less than 2 in the RA→ Ind configuration. Results indicate that myopotential noise generated by performing maneuvers has a demonstrable impact on AER sensing. Therefore, noise mitigation processes are necessary in atrial automatic pacing capture verification algorithms based on evoked response signals to identify and appropriately manage noise. (PACE 2011; 34:460-466) pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts tracings Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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