A system of leads for electrocardiographic mapping has been suggested.
The system provides sufficient accuracy of clinical mapping of the el
ectric potential of the heart over the total surface of the chest with
a number of electrodes close to possible minimum. Design of the maps
of cardiac potential has been performed according to origibal techniqu
e of adaptive quasimultipolar approximation of the potential. Experime
ntal measurements in 100 healthy men and 25 patients with different ca
rdiac pathology were conducted for assessment of accuracy of mapping o
f the cardiac potential using two Variants of the lead system - with 3
2 and 48 chest electrodes. The results were compared with the data obt
ained by the reference CARDIAC lead system which consists of 80 chest
electrodes. For the 48 electrode system absolute root-mean-square erro
r of the potential average for the group when constant standard geomet
ric parameters of the chest were used in calculations was about 7 !m!V
for P region, about 33 !m!V for the QRS region, and about 11 !m!V for
the T region of the electrocardiogarm. These errors which were close
to the level of unavoidable noise of a measuring procedure in clinical
conditions could be further diminished by inclusion into calculations
of individual geometric parameters of the chest.