Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
    

concept

4. chest leads : six chest lead positions are defined by international agreement (a).

Electrocardiogram performed on a horse. Chart, November (?) 1884.

ECG trace showing unstable angina pectoris. This is the symptom of paroxysmal pain consequent to myocardial ischaemia, usually of distinctive character, location and radiation. It is thought to be provoked by a transient stressful situation during which the oxygen requirements of the myocardium exceed that supplied by the coronary circulation.

The string galvanometer and the human electrocardiogram / by W. Einthoven.

Atlas of ABC electrocardiography = Atlas der ABC elektrokardiographie = Atlas d'électrocardiographie ABC / E.R. Trethewie.

A first step in the analysis of the dog's ventricular electrocardiogram : preliminary communication / by Thomas Lewis.

Étude élémentaire des arythmies : lecture des électrogrammes, phono et cinématographie / R. Lutembacher.

Scales, Francis Shillington (1866-1927)

Atlas d'électrocardiographie et de vectorcardiographie : etude du ventriculogramme dans les conditions normales et pathologiques / par Pierre W. Duchosal et Jean R. Grosgurin.

Electrocardiography

Images

Catalogue

Atlas of ABC electrocardiography = Atlas der ABC elektrokardiographie = Atlas d'électrocardiographie ABC / E.R. Trethewie.

A first step in the analysis of the dog's ventricular electrocardiogram : preliminary communication / by Thomas Lewis.

Étude élémentaire des arythmies : lecture des électrogrammes, phono et cinématographie / R. Lutembacher.

Scales, Francis Shillington (1866-1927)

Atlas d'électrocardiographie et de vectorcardiographie : etude du ventriculogramme dans les conditions normales et pathologiques / par Pierre W. Duchosal et Jean R. Grosgurin.