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lead


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n.1. a portion of an electrocardiographic record that is obtained from a single electrode or a combination of electrodes placed on a particular part of the body (see electrocardiogram, electrocardiography). In the conventional ECG, 12 leads are recorded. Each lead represents the electrical activity of the heart as ‘viewed’ from a different position on the body surface and may help to localize myocardial damage. 2. a flexible steerable insulated wire introduced into the heart under X-ray control to allow electrical stimulation of the heart for the purpose of pacing (see pacemaker).

1. a portion of an electrocardiographic record that is obtained from a single electrode or a combination of electrodes placed on a particular part of the body (see electrocardiogram, electrocardiography). In the conventional ECG, 12 leads are recorded. Each lead represents the electrical activity of the heart as ‘viewed’ from a different position on the body surface and may help to localize myocardial damage. 2. a flexible steerable insulated wire introduced into the heart under X-ray control to allow electrical stimulation of the heart for the purpose of pacing (see pacemaker).

Subjects: Medicine and Health.


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