Abstract: The present invention provides an apparatus and methods for continuous intravascular measurement of whole blood concentration, blood pressure, and pulse pressure. The intravascular catheter incorporates a sensor to measure whole blood sound velocity, attenuation, backscatter amplitude, and blood flow velocity and also incorporates existing technologies for multiple physiologic measurements of whole blood. Pulse wave velocity and wave intensity are derived mathematically for purposes of estimating degree of local vascular tone.

Abstract: A blood monitoring device comprising a body having a proximal and distal transducers spaced apart and connected to both device drivers and recognition and analysis devices. A power source is connected to both device drivers and the recognition and analysis devices. The device driver is also connected to the recognition and analysis devices.