Surgery – Truss – Pad
Patent
1994-11-15
1996-10-01
Kamm, William E.
Surgery
Truss
Pad
128702, 128705, A61B 50452
Patent
active
055603688
ABSTRACT:
A method for analyzing electrocardiograph signals to determine risk of malignant arrhythmias, that involves: sensing fluctuations in voltage resulting from electrical activity of a heart over a time period of about 256 seconds as signals having an analog value; converting such signals having an analog value to digital values corresponding substantially to the analog value of the signals; recording the digital values in a record; analyzing the digital values of the record by: identifying a time of each R wave of a heartbeat; defining a template QT interval for a heartbeat by selecting a beginning of a QRS complex and an end of a T wave for the heartbeat; determining an alteration value selected from the group consisting of an elongation of a heartbeat in time and a compression of a heartbeat in time as an error function for the heartbeat; performing a binary search to determine a minimal value for the error function; and assessing changes in QT interval for each heartbeat using the entire T wave.
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Kamm William E.
Layno Carl H.
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