isoelectric line


Also found in: Dictionary, Thesaurus, Encyclopedia.

i·so·e·lec·tric line

the baseline of the electrocardiogram, recorded in the TP interval during rhythms with P waves.

i·so·e·lec·tric line

(ī'sō-ĕ-lek'trik līn)
The baseline of the electrocardiogram.
References in periodicals archive ?
QT interval is defined as the distance between the point of starting Q wave and the point of ending T wave with the T-P isoelectric line.
Specifically, we used the so-called "threshold" method where the end of the T-wave was defined by where it rejoined the isoelectric line.
The onset of the P-wave was defined as the junction between the isoelectric line at the beginning of the P-wave deflection and the offset of the P-wave was defined as the junction between the end of the P-wave and the isoelectric line.
S-T segment elevation or depression is considered significant if displacement is 1 mm (one small box) or more above or below the isoelectric line and is seen in two or more leads.
The beginning of P waves was defined as positive deflection from the isoelectric line and the end as the point when the positive deflection returned to the isoelectric line (5).