In an ECG monitoring and analyzing system of the type where electrodes are
placed on a subject for detecting electrical activity of a heart, and
where the electrode placement is such that Frank Leads X, Y and Z can be
constructed from the detected electrical activity, an ECG signal
transformation network for providing Frank X, Y and Z leads, comprises an
input, responsive to a set of input signals corresponding to no more than
derived chest leads dV1, dV2, dV3, dV4, dV5 and dV6, a memory for storing
coefficients of a transformation matrix, and an output, for providing
transformation matrix output signals corresponding to application of said
transformation matrix coefficients to said input signals, said output
signals corresponding to said Frank X, Y and Z leads. The invention
reduces bandwidth requirements in an ECG signal communication network, as
well as the complexity of the processing required for constructing the
Frank Leads.
