The invention relates to a measuring member and a device to be used fordetermining the blood flow of the gastrointestinal tract, said measuringmember comprising an intestinal probe, having its distal end provided with aflexible inflatable body and at least one pressure sensor mounted on thissupporting body. After bringing the inflatable flexible body at thepredetermined pressure, the pressure sensor will abut the intestinal wall andthe measured pressure development, which represents a measure for the bloodflow of the gastrointestinal tract, is transformed into a graphical image withthe help of the device and/or is transformed into actual values for the bloodflow of the gastrointestinal tract. Further, the measuring member measures thedevelopment of the pressure within the inflatable flexible body, whichrepresents a measure for the intestinal peristalsis.
