INTRINSIC FREQUENCY ANALYSIS FOR LEFT VENTRICLE EJECTION FRACTION OR STROKE VOLUME DETERMINATION

摘要

Hardware and software methodology are described for non-invasively monitoring cardiac health. Hemodynamic waveforms variously acquired for a subject are analyzed to calculate or approximate intrinsic frequencies in two domains in two domains across the Dicrotic Notch. Together with associated notch timing, heart rate and blood pressure values left ventricle ejection fraction and/or stroke volume can be determination.

主权项

1. A system for acquiring and analyzing a hemodynamic waveform of a subject by Intrinsic Frequency (IF) analysis, the system comprising:
a scanner adapted to capture a signal corresponding to a hemodynamic waveform; and at least one computer processor connected to the scanner by a wired or wireless connection, wherein the computer processor is adapted to receive the signal for the hemodynamic waveform, determine a Dicrotic Notch using the signal, calculate first and second intrinsic frequencies (ω1, ω2) on each side of the Dicrotic Notch and at least one of other IF parameters including a1, b1, a2, b2, and c for the waveform, and output a signal corresponding to at least one of left ventricle ejection fraction (LVEF) and stroke volume (SV).