Patent ID: 8016766

Claim:
A central venous sensor assembly for measuring physiological data for cardiac output determination, said measurement assembly comprising: a distal intravascular portion for placement in the vena cava inferior of a patient and a proximal intravascular portion for placement in the vena cava superior of the patient, a distal flux measurement unit arranged in the distal intravascular portion and adapted to provide raw measurement data for determination of a blood flow in the direction towards the proximal intravascular portion, and a proximal flux measurement unit arranged in the proximal intravascular portion and adapted to provide raw measurement data for determination of a blood flow in the direction towards the distal intravascular portion, wherein the venous sensor assembly is connected to an evaluation unit comprising a first input channel for receiving raw measurement data from said distal flux measurement unit and a second input channel for receiving raw measurement data from said proximal flux measurement unit and being adapted to: determine a first blood flow from the raw measurement data received from said distal flux measurement unit, determine a second blood flow from the raw measurement data received from said proximal flux measurement unit, and determine said cardiac output as a sum of said first blood flow and said second blood flow.