| abstract |
AN ELECTROCARDIOGRAPHIC MONITORING SYSTEM WHICH RECOGNIZES QRS COMPLEXES, THEIR RHYTHM AND MORPHOLOGIES. THE MORPHOLOGIES OF THE QURS COMPLEXES ARE MEMORIZED DURING A LEARNING INTERVAL AT THE START OF MONITORING. THEREAFTER, DIFFERENT MORPHOLOGIES ARE IDENTIFIED AS ABNORMAL. EACH QRS COMPLEX IS RECOGNIZED BY DIFFERENTIATING IT, FORMING VARIOUS PRODUCT SIGNALS OF ITSELF AND ITS DERIVATIVE, AND REGISTERING THE SEQUENCE IN WHICH THE VARIOUS PRODUCT SIGNALS EXCEED AND FALL BELOW THRESHOLD VALUES. THE SYSTEM ALSO CONTINUOUSLY UPDATES A 10-SECOND AVERAGE OF THE R-R INTERVAL IN ORER TO IENTIFY PREMATURE AND LATE BEATS, AND COMPENSATORY PAUSES. |