CineECG for visualization of changes in ventricular electrical activity during ischemia.

Background: CineECG offers a visual representation of the location and direction of the average ventricular electrical activity throughout a single cardiac cycle, based on the 12‑lead ECG. Currently, CineECG has not been used to visualize ventricular activation patterns during ischemia.

Purpose: To determine the changes in ventricular activity during acute ischemia with the use of CineECG, and relating this to changes in the ECG.

Modeling ventricular repolarization gradients in normal cases using the equivalent dipole layer.

Background Electrical activity underlying the T-wave is less well understood than the QRS-complex. This study investigated the relationship between normal T-wave morphology and the underlying ventricular repolarization gradients using the equivalent dipole layer (EDL). Methods Body-surface-potential-maps (BSPM, 67‑leads) were obtained in nine normal cases.

The CineECG in ischemia localization in ST-elevation (equivalent) acute coronary syndromes.

Aim Of The Study: In this proof of concept study we aimed to visualize and quantify the injury vectors using the CineECG in representative examples of ST elevation acute myocardial infarction (STEMI) and STEMI-equivalent electrocardiograms (ECG's). For this purpose ECG's were selected with different ST deviation patterns in acute anterior wall, inferior or posterolateral wall infarctions.

Methods: The ST-amplitudes of the individual leads were measured between J-point and 60 ms after the J-point.