Abstract: Methods, devices and systems are described for evaluating an initial orthostatic response of an individual during an orthostatic test. For example, the method may include: receiving a pulse signal obtained during an orthostatic test performed from a sensor placed on the individual; identifying a position and an amplitude of the dicrotic notch for pulses in a portion of the pulse signal to obtain a set of dicrotic notch positions and amplitudes; generating an initial orthostatic response curve from the set of dicrotic notch positions and amplitudes; evaluating the initial orthostatic response curve to obtain an assessment of the initial orthostatic response; and displaying, storing and/or transmitting at least one of the initial orthostatic response curve and a visual representation of the assessment of the initial orthostatic response curve.

Abstract: A health monitoring and biofeedback system comprising a photoplethysmography (PPG) sensor, a processing device, and a Web site server for determining, displaying and analyzing various cardiovascular parameters. The PPG sensor is installed within a manually operated user input device such as a mouse or keyboard, measures a user's blood volume contour and transmits it to a processing device such as a personal computer or a personal digital assistant (PDA). The system determines a plurality of cardiovascular indices including mean blood pressure, heart rate, body temperature, respiratory rate, and arterial compliance on the basis of signal characteristics of the systolic wave pulse and the systolic reflected wave pulse present within the digital volume pulse derived from the PPG pulse contour.

Abstract: A health monitoring and biofeedback system comprising a photoplethysmography (PPG) sensor, a processing device, and a Web site server for determining, displaying and analyzing various cardiovascular parameters. The PPG sensor is installed within a manually operated user input device such as a mouse or keyboard, measures a user's blood volume contour and transmits it to a processing device such as a personal computer or a personal digital assistant (PDA). The system determines a plurality of cardiovascular indices including mean blood pressure, heart rate, body temperature, respiratory rate, and arterial compliance on the basis of signal characteristics of the systolic wave pulse and the systolic reflected wave pulse present within the digital volume pulse derived from the PPG pulse contour.