NCIt definition : A unipolar electrocardiogram lead site; the electrode is placed at the fifth intercostal
space on the anterior chest wall (between ribs 5 and 6) at the left midclavicular
line. In small animals it corresponds to V4-V6 where it is placed at the 6th left
intercostal space near the costochondral junction. In large animals it is placed over
the 6th rib at the level of a horizontal line drawn through the scapulohumeral articulation
on the left side of the thorax.;
Alternative definition : CDISC: A unipolar electrocardiogram lead site; the electrode is placed at the fifth
intercostal space on the anterior chest wall (between ribs 5 and 6) at the left midclavicular
line. In small animals it corresponds to V4-V6 where it is placed at the 6th left
intercostal space near the costochondral junction. In large animals it is placed over
the 6th rib at the level of a horizontal line drawn through the scapulohumeral articulation
on the left side of the thorax. (NCI);
Currated CISMeF NLP mapping