limb lead


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limb lead

one of the three standard leads (leads I, II, III) or one of the unipolar limb leads (aVR, aVL, aVF).

limb lead

[lēd]
Etymology: AS, lim, limb, laeden, lead
an electrocardiographic electrode that is attached to an arm or a leg.

limb lead

(lim lēd)
One of the three standard leads (leads I, II, III) or one of the unipolar limb leads (aVR, aVL, aVF).

limb lead

Any lead, unipolar or bipolar, in which a limb is the location of one of the electrodes.
See also: lead
References in periodicals archive ?
When optimal immobilization and contact were obtained, standard bipolar (I-III) and augmented unipolar (aVR, aVL, and aVF) limb leads were recorded.
As mentioned previously, a unipolar limb lead records the electrical potential at a single exploring (positive) electrode on one of the limbs minus the average potentials of the other two limb leads.
If this were to happen from the point of view of convenience, then some form of mapping of limb lead measurements from the conventional to the Mason Likar approach would need to be undertaken or else completely revised limits of normality, particularly for limb leads, would need to be developed.
Steel needle electrodes were inserted subcutaneously to obtain standard bipolar limb lead electrocardiograms.
DIAGNOSIS: Atrial fibrillation with a ventricular response of 104 beats/minute; Ashman's phenomenon; 1 RV6 > RV5 suggests left ventricular enlargement, (2) right axis deviation (106[degrees]) of the QRS complex with large S waves in leads V5 and V6 indicates right ventricular enlargement; (3) and large QRS voltage in the precordial leads compared to the limb leads implies a dilated cardiomyopathy.
A 12-lead electrocardiogram (ECG) showed a sinus rhythm with S1Q3T3 pattern in limb leads and inverted T waves in right precordial leads (V1 to V4).