Journal article
Functional Similarity Between Electrograms Recorded from an Implantable Cardioverter Defibrillator Emulator and the Surface Electrocardiogram
Pacing and clinical electrophysiology, Vol.24(1), pp.34-40
Received January 10, 2000; revised April 27, 2000; accepted June 30, 2000.
01/2001
DOI: 10.1046/j.1460-9592.2001.00034.x
PMID: 11227966
Abstract
Clinical use of stored electrogram (EGM) configurations currently used in ICDs is limited. The hypothesis that EGMs recorded from electrodes on the ICD surface may improve diagnostic capabilities of the device was tested in the present study. The Buttons on Active Can Emulator (BACE), an ICD-sized device containing four button electrodes, was temporarily placed into a subcutaneous or submuscular left pectoral pocket in 16 patients during ICD implantation. Simultaneous recordings were obtained from the ECG lead II, bipolar EGMs using BACE electrodes, and a bipolar atrial EGM during sinus rhythm (SR), ventricular pacing (VP) at cycle lengths of 500 and 400 ms, and VT. Visible P waves were present in all patients during SR (n = 15), in 5 (33%) of 15 patients during VP, and none of the patients during VT (n = 4) using BACE EGMs and lead II. P and QRS amplitudes and the P:QRS ratio during SR in BACE EGMs were significantly lower than those in lead II. BACE EGMs showed prominent changes in QRS morphology and duration during VP and VT compared to SR, and the magnitude of QRS prolongation during VP was similar to that in lead II. Measurements of PR, QRS, and QT duration during SR showed good agreement between BACE EGMs and lead II. In conclusion, EGMs recorded from electrodes embedded on the ICD housing may potentially improve visual discrimination between supraventricular and ventricular arrhythmias. They also may be useful as a surrogate of the ECG for analysis and monitoring of different components of P-QRS-T complex.
Details
- Title: Subtitle
- Functional Similarity Between Electrograms Recorded from an Implantable Cardioverter Defibrillator Emulator and the Surface Electrocardiogram
- Creators
- ALEXANDER MAZUR - Vanderbilt University Medical Center, Nashville, TennesseeLi Wang - Medtronic Incorporated, Minneapolis, MinnesotaMARK E ANDERSON - Vanderbilt University Medical Center, Nashville, TennesseeRAYMOND YEE - University Hospital, London, Ontario, CanadaHEINZ THERES - Charite Hospital, Berlin, GermanyANN PEARSON - Medtronic Incorporated, Minneapolis, MinnesotaWALTER OLSON - Medtronic Incorporated, Minneapolis, MinnesotaMARK WATHEN - Vanderbilt University Medical Center, Nashville, Tennessee
- Resource Type
- Journal article
- Publication Details
- Pacing and clinical electrophysiology, Vol.24(1), pp.34-40
- Edition
- Received January 10, 2000; revised April 27, 2000; accepted June 30, 2000.
- Publisher
- Blackwell Futura Publishing, Inc
- DOI
- 10.1046/j.1460-9592.2001.00034.x
- PMID
- 11227966
- ISSN
- 0147-8389
- eISSN
- 1540-8159
- Number of pages
- 7
- Language
- English
- Date published
- 01/2001
- Academic Unit
- Cardiovascular Medicine; Internal Medicine
- Record Identifier
- 9984094639602771
Metrics
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