초록 ▼

New methods of characterising ventricular operations by measuring propagation characterisics of the repolarisation wavefront (the T wave) are disclosed, the methods use new descriptions of T wave Morphology Dispersion (TMD), Total Cosin R_ to _T (TCRT) and T wave energy residium to quantify the wave

New methods of characterising ventricular operations by measuring propagation characterisics of the repolarisation wavefront (the T wave) are disclosed, the methods use new descriptions of T wave Morphology Dispersion (TMD), Total Cosin R_ to _T (TCRT) and T wave energy residium to quantify the wavefront characteristics, these descriptors measure the spatial variability of the T wave Morphology, the vector deviations between the depolarisation and repolarisation wavefronts and the energy of the non-dipolar components of the ECG vector respectively. TCRT also provides a responsive descriptor for measuring autonomic tone. As such, has applications for improved pacing and autonomic nervous system monitors.

대표청구항 ▼

1. A method of characterising ventricular operation of a patient's heart, comprising sensing a plurality of electrical signals heart from different spatial positions with respect to the heart during depolarisation and repolarisation of the patient's heart, the plurality of electrical signals monitor

1. A method of characterising ventricular operation of a patient's heart, comprising sensing a plurality of electrical signals heart from different spatial positions with respect to the heart during depolarisation and repolarisation of the patient's heart, the plurality of electrical signals monitoring the propagation of depolarisation and repolarisation waves originating in the patient's heart, processing the plurality of electrical signals to yield a vector which describes the propagation direction of one of the depolarisation and repolarisation wavefronts, and a set of a plurality of vectors which describe the propagation direction of the other of the depolarisation and repolarisation wavefronts with respect to time, and determining the vector deviation between the depolarisation and repolarisation wavefronts by measuring the angle between pairs of respective vectors for all combinations of depolarisation vector to repolarisation vector between predetermined time limits, wherein the cosine of the angle between each depolarisation/repolarisation vector pair is calculated.