intracardiac electrocardiogram — see under electrogram … Medical dictionary
His bundle electrogram — (HBE) an intracardiac electrogram of potentials in the lower right atrium, atrioventricular node, and His Purkinje system, obtained by positioning intracardiac electrodes near the tricuspid valve; it is used to pinpoint the site, extent, and… … Medical dictionary
coronary sinus (CS) electrogram — an intracardiac electrogram that records electrical potentials within the coronary sinus; it is used for indirect monitoring of left atrial and left ventricular sites … Medical dictionary
high right atrial (HRA) electrogram — an intracardiac electrogram that records electrical potentials within the upper region of the right atrium, obtained by introduction of electrodes high in the atrium near the sinus node; used in localizing conduction blocks and diagnosing… … Medical dictionary
intra-atrial electrogram — an intracardiac electrogram of potentials within the atrium; used particularly for monitoring P waves … Medical dictionary
right ventricular electrogram — an intracardiac electrogram obtained by placing electrodes in the right ventricle; used to assess ventricular activity and response to stimuli … Medical dictionary
right ventricular apical electrogram — an intracardiac electrogram obtained by placing electrodes in the apex of the right ventricle; it is used in mapping ventricular arrhythmias … Medical dictionary
sinus node electrogram — an intracardiac electrogram obtained by placing electrodes near the sinus node; it is used in examining the time for impulse conduction from the node to the atrium … Medical dictionary
IEGM — intracardiac electrogram … Medical dictionary
IEGM — • intracardiac electrogram … Dictionary of medical acronyms & abbreviations
Intracardiac electrogram. Schematic illustration shows a single beat with accompanying intracardiac signals from the sinus node, right atrium, atrioventricular (AV) nodal and His bundle regions, and right ventricle, contrasted with a conventional body-surface electrocardiogram (ECG). A, Atrial recording; H, His recording; V, ventricular recording.
