electrogram


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electrogram

[i′lek·trə‚gram]
(electronics)
A record of an image of an object made by sparking, usually on paper.
(meteorology)
A record, usually automatically produced, which shows the time variations of the atmospheric electric field at a given point.
(physiology)
The graphic representation of electric events in living tissues; commonly, an electrocardiogram or electroencephalogram.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The reference line was set as the summit of QRS for the surface ECG, and electrical delay was measured in milliseconds between the reference line on the surface ECG and the onset on the bipolar intracardiac electrogram. We collected the activation potential (reflected by the activation time) point by point when pulling back the lead and determined that the purple area was the latest activated region while the white one was the earliest.
Caption: Figure 1: AEGM signals of each group of the database: noncomplex fractionated atrial electrogram (NC AEGM) and complex fractionated atrial electrogram (C AEGM).
In the clinical setting, electrogram recordings are frequently limited to 2.5-5-second segments due to the need for frequent catheter repositioning during the procedure, challenging conventional mapping approaches to precisely identifying substrates in AF and other arrhythmias.
Berte et al., "Bipolar electrograms characteristics at the left atrial-pulmonary vein junction: toward a new algorithm for automated verification of pulmonary vein isolation," Heart Rhythm, vol.
If the patient presented in atrial fibrillation, complex fractional atrial electrograms are also mapped during the anatomical mapping of the left atrium.
His preoperative electrogram revealed LQTS with a 0.47 ms [QT.sub.c] interval, and propranolol medication was started preoperatively after consulting a pediatric cardiologist.
As shown in Figure 6(a), the compressed waveform of the epicardial electrogram recordings changed dramatically after the second train of electrical stimulation pulses (indicated in green), compared with the previous one.
In the study conducted by Douglas, Berger, Nezo, Shinnichi, Iga, Tomie, Hosaka, Takashi, Nakamura and Seiro [19] on schizophrenic patients and normal persons by Electrogram, two results were found after measuring mutation reaction speed: A: there is a reaction shortage to information processing in schizophrenic patients.
With event-triggered intracardiac electrogram (IEGM) transmissions, the new Biotronik pacemaker series innovates advanced patient monitoring and allows physicians to receive an IEGM along with a notification if atrial fibrillation (AF) occurs.
A 5-French catheter electrode (Japan Lifeline, Tokyo, Japan) was inserted into the esophagus under the monitoring of an esophageal electrogram and placed to ensure constant atrial capture with the lowest threshold.