Intraoperative study of polarization and evoked response signals in different endocardial electrode designs.
Some new generation pacemakers use an algorithm based on evoked response (EH) detection to verify beat-to-beat capture and to enable automatic adjustment of output. This is a prospective acute study of polarization signal (PS) and ER in nine currently available electrodes. Intraoperative testing of...
| Publicado en: | Pacing & Clinical Electrophysiology Vol. 24; no. 7; pp. 1055 - 1061 |
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| Autores principales: | , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Wiley-Blackwell
Jul2001
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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=105716991&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105716991 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01478389 4F8 jtl: Pacing & Clinical Electrophysiology issn: 01478389 maglogo: Y pubinfo: dt: Jul2001 vid: 24 iid: 7 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 105716991 2009415352 10.1046/j.1460-9592.2001.01055.x NLM11475819 105716991 ppf: 1055 ppct: 6 formats: fmt: @attributes: type: P tig: atl: Intraoperative study of polarization and evoked response signals in different endocardial electrode designs. aug: au: Lau C Nishimura SC Yee R Lefeuvre C Philippon F Cameron DA sug: subj: Pacemaker, Artificial Adult Aged Aged, 80 and Over Electrodes Equipment Design Evoked Potentials Female Male Middle Age Prospective Studies Human Adult: 19-44 years Aged: 65+ years Aged, 80 & over Middle Aged: 45-64 years Female Male ab: Some new generation pacemakers use an algorithm based on evoked response (EH) detection to verify beat-to-beat capture and to enable automatic adjustment of output. This is a prospective acute study of polarization signal (PS) and ER in nine currently available electrodes. Intraoperative testing of ventricular bipolar electrodes used the Autocapture (AC) algorithm. The intrinsic R wave, PS, ER. acceptance of AC function, and stimulation thresholds (STs) were obtained. Ventricular electrodes were categorized as follows: titanium nitride (TiN)-coated passive and active fixation, high impedance (HI), passive fixation (VP), iridium oxide-coated titanium (IROX) (VI), and platinum helix (PH) active fixation. Acute testing was performed in 217 patients with an average age of' 74.26 years. 59.6% were men with primary pacing indication-SSS (46.3%). There were no significant differences found with respect to R wave and threshold between the various electrodes. PH active-fixation electrodes had significantly higher ER and PS than other groups including the TiN-coated active-fixation electrodes. TiN-coated electrodes (active and passive fixation) bad significantly lower PS than other electrodes. As a result, TiN electrodes bad a significantly higher functional rate of AC (91.7%), whereas PH bad the lowest rate (0%). In conclusion. (1) polarization characteristics are significantly different for commercially available ventricular electrodes, (2) certain physical features at the tissue to electrode interface like TiN coating appears to be more important in determining PS than electrode tip size and fixation method, and (3) the current algorithm for AC requires electrodes that provide low polarization for satisfactory performance. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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