Page 35
Art. no.: 2.511407 Rev.: a
Electrode placement 4
User guide Nehb leads 4.7
CT8000P-2
4.7 Nehb leads
Place the electrodes as follows:
Place all other electrodes in the normal positions (Page 31).
The Nehb leads are bipolar chest leads. They are of special interest for the diagnosis
of changes in the posterior ventricle wall. Three leads are arranged in the form of a
triangle, also called the “small cardiac triangle”. Nehb dorsal (D) is measured between
the electrode positions Nax and Nst; Nehb anterior (A) between Nap and Nst, and
Nehb inferior (J) between Nap and Nax.
IEC label AHA label Electrode placement
C1 white / red V1 brown / red Nst: 2nd rib at the right sternal border.
C2 white / yellow V2 brown / yellow Nax: left posterior axillary line (on the back), directly
opposite Nap.
C4 white / brown V4 brown / blue Nap: 5th intercostal space, midclavicular line (cardiac
apex).