Method of noninvasively determining a patient's susceptibility to arrhythmia
A system and method for detecting a patient's susceptibility to arrhythmias and cardiac tissue abnormality is disclosed. The method consists of using a computer 27 , a display 23 , software loaded onto the computer that generates graphical user interfaces (GUIs), an electronic interface 18 , and a plurality of electrodes. The electronics interface 18 is in electronic communication with the computer 27 , and further in electronic communication with the electrodes that are placed by self-adhesion at predetermined locations on a test subject 35 . According to one aspect of the invention, the method enables a user, typically a medical professional, to initiate, with minimal input, certain diagnostic tests involving observing and analyzing a series of QRS complexes 130 , some of which are biased with a subpacing current, and others of which are unbiased. The signals are then compared, and the differences are analyzed to detect a patient's susceptibility to arrhythmias and cardiac tissue abnormality.
1. A method for detecting patient susceptibility to arrhythmias comprising the steps of:
providing means for injecting low level electromagnetic energy stimulations into a patient's body suitable to alter at least one cardiac signal to allow a comparison of acquired distinguishable signal differences with at least one other cardiac signal which has not been affected by said injected energy;
connecting a lead system for both sensing the cardiac signals and delivering the injected energy to said means for injecting low level electromagnetic energy into the patient's body, said lead system, comprising a plurality of energy sensing and energy delivery leads and a plurality of energy sensing and energy delivery electrodes;
utilizing sensing improvement means for improving the quality of the sensed electromagnetic energy during the stimulation and acquisition process; and
evaluating the sensed signal for one or more arrhythmia predictive factors by evaluating variability over multiple QRST complexes by evaluating the relative timing of any combination of P-wave, Q-wave, R-wave, S-wave, or T-wave in a single QRST complex.