NASA NTRS · 20110023876
Real-Time, High-Frequency QRS Electrocardiograph
Abstract
An electronic system that performs real-time analysis of the low-amplitude, high-frequency, ordinarily invisible components of the QRS portion of an electrocardiographic signal in real time has been developed. Whereas the signals readily visible on a conventional electrocardiogram (ECG) have amplitudes of the order of a millivolt and are characterized by frequencies <100 Hz, the ordinarily invisible components have amplitudes in the microvolt range and are characterized by frequencies from about 150 to about 250 Hz. Deviations of these high-frequency components from a normal pattern can be indicative of myocardial ischemia or myocardial infarction
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Schlegel, Todd T., DePalma, Jude L., Moradi, Saeed. 2003-07-01. Real-Time, High-Frequency QRS Electrocardiograph. https://ntrs.nasa.gov/citations/20110023876
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