| Electrode placement for complete 12 lead ECG |
| Lead 1: LA - RA:
|
Left foreleg (left arm) electrode (+) placed just below the point of the elbow on
the back of the left forearm - right foreleg (right arm) electrode (-) placed just below
the point of the elbow on the back of the right forearm. |
| Lead II: LL - LA
|
Left hindleg (left leg) electrode (+) placed on the loose skin at the left stifle
in the region of the patella - left foreleg (left arm) electrode (-) placed just below the
point of the elbow on the back of the left forearm. |
| Lead III: LL - RA:
|
Left hindleg (left leg) electrode (+) placed on the loose skin at the left stifle
in the region of the patella - right foreleg (right arm) electrode (-) placed just below
the point of the elbow on the back of the right forearm. |
| aVR: RA - CT:
|
Right foreleg (right arm) electrode (+) placed just below the point of the elbow
on the back of the right forearm - the electrical center of the heart or central terminal
x 3/2; left foreleg and left rear leg (-). |
| aVL: LA - CT:
|
Left foreleg (left arm) electrode (+) placed just below the point of the elbow on
the back of the left forearm - the electrical center of the heart or central terminal x
3/2; right foreleg and left rear leg (-). |
| aVF: LL - CT:
|
Left hindleg (left leg) electrode (+) placed on the loose skin at the left stifle
in the region of the patella - the electrical center of the heart or central terminal x
3/2; right foreleg and left foreleg (-). |
| CV6LL: V1 - CT:
|
V1 electrode (+) placed in the 6th intercostal space on the left side of the
thorax along a line parallel to the level of the point of the elbow - the electrical
center of the heart (central terminal). |
| CV6LU: V2 - CT:
|
V2 electrode (+) placed in the 6th intercostal space on the left side of the
thorax along a line parallel to the level of the point of the shoulder - the electrical
center of the heart (central terminal). |
| V10: V3 - CT:
|
V3 electrode (+) placed over the dorsal thoracic spine of T7 at the withers -
electrical center of the heart. The dorsal spine of T7 is located on a line encircling the
chest in the 6th intercostal space (central terminal). |
| CV6RL: V4 - CT:
|
V4 electrode (+) placed in the 6th intercostal space on the
right side of the thorax along a line parallel to the level of the point of the elbow -
the electrical center of the heart (central terminal). |
| CV6RU:V5 - CT:
|
V5 electrode (+) placed in the 6th intercostal space on the
right side of the thorax along a line parallel to the level of the point of the shoulder -
the electrical center of the heart (central terminal). |
| Base-apex:LA-RA
|
Left foreleg (left arm) electrode (+) placed in the 6th intercostal space on the
left side of the thorax along a line parallel to the level of the point of the elbow -
right foreleg (right arm) electrode (+) placed on the top of the right scapular spine or
over the right jugular furrow |
