electrogram /elec·tro·gram/ (e-lek´tro-gram) any record produced by changes in electric potential.
His bundle electrogram (HBE)
electrogram [e-lek´tro-gram]
esophageal electrogram one recorded by an esophageal electrode, for enhanced detection of P waves and elucidation of complex arrhythmias.
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.
intracardiac electrogram a record of changes in the electric potentials of specific cardiac loci, as measured with electrodes placed within the heart via cardiac catheters; used for loci that cannot be assessed by body surface electrodes, such as the bundle of His or other regions within the cardiac conducting system. 
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Intracardiac electrograms. Schematic illustrations of several intracardiac electrograms contrasted with a conventional body-surface electrocardiogram (ECG). HRA = high right atrial electrogram; HBE = His bundle electrogram, in which A = low right atrial activity, H = His bundle activity, and V = ventricular septal activity; also shown are the P–R, P–A, A–H, and H–V intervals.
| His bundle electrogram n. An electrogram that is recorded from the atrioventricular trunk during cardiac catheterization. |
His bundle electrogram (HBE)
Etymology: Wilhelm His, Jr., German physician, 1863-1934
a direct recording of the electrical activity in the atrioventricular bundle (bundle of His).
electrogram [e-lek´tro-gram]
1. any record produced by changes in electric potential.
2. specifically, a cardiogram taken from the chambers of the heart or from a specific position within the chambers.
His bundle electrogram 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 mechanisms of arrhythmias and conduction defects.
intracardiac electrogram a record of changes in the electric potentials of specific cardiac loci as measured by electrodes placed within the heart via cardiac catheters; it is used for loci that cannot be assessed by body surface electrodes, such as the bundle of His or other regions within the cardiac conducting system.
electrogram
any record produced by changes in electric potential.
His bundle electrogram
an intracardiac electrocardiogram of potentials in the bundle of His, done through a cardiac catheter.
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