Systems and methods for estimating hemodynamic parameters from a physiological curve image

A system for flow-based hemodynamic monitoring, comprising:

• a display device configured to visually display a physiological curve of a patient, the physiological curve comprising either a pulse pressure curve or a plethysmographic curve;
• a capture device comprising:
• a camera configured to capture the visual display of the physiological curve of the patient;
• capture storage media containing a capture set of instructions configured to be executed by the capture device, the capture set of instructions including instructions for extracting an extracted portion of the visual display containing the physiological curve;
• and
• a capture communication device configured to transmit and receive image information, the image information including the extracted portion of the visual display portion containing the physiological curve;
• and
• an analysis device configured to analyze the extracted portion of the visual display containing the physiological curve transmitted from the capture device to determine one or more hemodynamic parameters.

A method of computing flow-based hemodynamic parameters from a physiologic monitor attached to a patient, the monitor displaying a picture of a physiological curve of a patient, the method comprising:

• extracting from the picture displayed by the physiologic monitor an extracted portion of the picture that contains the physiological curve of the patient, the physiological curve comprising either pulse pressure curve or a plethysmographic curve of the patient;
• uploading the extracted portion to an analysis server;
• and
• analyzing the extracted portion containing the physiological curve with the analysis server to determine one or more hemodynamic parameters, analyzing including analysis steps comprising:
• generating a physiological curve signal from the extracted portion;
• determining peaks in the physiological curve signal;
• using the peaks to determine a cycle size of the physiological curve signal;
• determining a location of a dicrotic wave in the physiological curve signal;
• calculating a calculated area under a curve for each cycle up to the dicrotic wave of the physiological curve signal;
• and
• using the calculated area to calculate an estimate of cardiac output.