Patent ID: 8540643

Claim:
A method of selecting an appropriate anti-arrhythmia therapy for a patient according to a hemodynamic status of the patient, comprising: monitoring electrical activity of the patient's heart to detect an arrhythmia; monitoring hemodynamic performance of the heart, said monitoring comprising: measuring a parameter indicative of hemodynamic performance during a first state to establish a template waveform, obtaining an autocharacterization measure for the template waveform by cross-characterizing the template waveform with itself, measuring the parameter indicative of hemodynamic performance during a second state to establish a test waveform, performing a cross-characterization between the template waveform and the test waveform to identify a cross-characterization measure, comparing the cross-characterization measure with the autocharacterization measure to obtain a comparison result, and obtaining an indication of hemodynamic status based on the comparison result; and selecting, based on said indication of hemodynamic status, the appropriate anti-arrhythmia therapy to treat the arrhythmia.