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The aim of this study was to evaluate whether detection performance of ACC/ESC STEMI criteria based on 12-lead ECG can be improved by using criteria from 3 vessel-specific leads (VSLs) derived from reduced lead sets of 12-lead ECG using 3 limb electrodes at Masson-Likar torso sites and 2 chest electrodes at precordial sites V1 to V6. There are a total of 15 such lead sets and each can be recorded...
It has been proposed that by optimizing the timing of activation between the ventricles (V-V interval), with the aid of body-surface potential mapping (BSPM), the success rate of cardiac resynchronization therapy (CRT) devices could be improved. We recorded 120-electrode BSPM data and CT scans from two patients with implanted CRT devices and calculated, by means of electrocardiographic inverse solution,...
Our aim was to enhance diagnostic performance of ACC/ESC STEMI criteria based on 12-lead ECG by using criteria from 3 derived vessel-specific leads (VSLs). Study data consisted of 12-lead ECGs acquired during angioplasty-induced ischemic episodes due to balloon inflation in, respectively, LAD (n = 35), RCA (n = 47), and LCx (n = 17) coronary arteries. Three VSLs were derived from 12-lead ECG by previously...
We hypothesized that the calculation of epicardial potentials from body-surface potential maps (BSPMs) could aid ablation of ventricular tachycardia (VT). BSPMs were recorded during epicardial catheter mapping and pacing in 2 patients. Single-beat epicardial maps were calculated by inverse solution using customized torso/cardiac geometry, discretized from a CT scan. During pacing from 48 epicardial...
We developed infant-specific transformations of ECG leads and compared their performance with that achieved by transformations derived for adults. In particular, we studied the ability of 15 reduced lead sets consisting of Mason-Likar (M-L) limb leads and 2 precordial leads to predict the complete set of M-L 12 leads, plus right-sided, posterior, and orthogonal leads. The study population consisted...
Our aim was to study the electrical characteristics of human ventricular fibrillation (VF) by means of body surface potential mapping and heart-model simulations. We acquired 120-lead ECG data on the chest surface of patients undergoing controlled testing of implantable defibrillators. VF was induced by burst pacing, and ECGs were recorded for 5 to 7 seconds before the device delivered a rescue shock...
Our aim was to develop and evaluate transformations for deriving standard 12-lead ECG, 18-lead ECG (with added V7-V9, V3R-V5R), and Frank VCG from lead sets using 3 limb electrodes at Mason-Likar sites and 2 electrodes at V1-V6 sites. The study population consisted of 290 normal subjects and 602 patients with previous myocardial infarction or ventricular tachycardia. Required ECG data were extracted...
A low-noise multichannel recording system for simultaneously registering up to 256 ECG (electrocardiogram) signals in digital form is described. The unit's features include: patient isolation and radiolucent electrodes required for use during cardiac catherization and angioplasty procedures; continuous data collection over several minutes; gain and sampling frequency under software control; and flexible,...
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