Abstract: The system interacts with an apparatus for extracorporeal blood treatment, which is connected to the venous vascular system of a patient via an inflow line and an outflow line. Temperature influencing means for causing an initial local temperature deviation T1 in the vicinity of a first point of the vascular system, as a result of which a traveling temperature change is introduced into the blood flow of the patient, a first temperature sensor for measuring the local temperature of the blood at a second point of the vascular system downstream of the first point, and a second temperature sensor for measuring the local temperature of the blood in the inflow line are provided. A computer system records the local blood temperature measured at the second point and at the inflow line, in each case as a function of time, and ascertains and evaluates a first and second thermodilution curve (TDK1, TDK2).

Abstract: An extracorporeal blood treatment device with a function-monitoring system, wherein the extracorporeal blood treatment device for connection to the vascular system of a patient has an input branch and an output branch. The extracorporeal blood treatment device is equipped, in a first circuit, with at least one first pump arranged between the input branch and output branch for moving the patient's blood, and, in a second circuit filled with liquid and thermally connected to the first circuit of the extracorporeal blood treatment device via a heat exchanger, it has temperature-influencing means. The function-monitoring system has, in the second circuit, two temperature sensors which are arranged upstream (TS2auf) and downstream (TS2ab), respectively, with respect to the heat exchanger, in addition, temperature sensor TS1ab is arranged in the output branch of the first circuit, downstream from the heat exchanger.

Abstract: The invention relates to a system for determining a cardiovascular parameter in a patient, wherein the system is adapted to work in conjunction with an extracorporeal blood treatment device (ECBTD) connectable to a patient's vascular system, wherein the ECBTD comprises a first circuit, the system comprising: a liquid-filled, second circuit thermally connected to the first circuit of the ECBTD via a heat exchanger, temperature changing means for generating a temperature change in the second circuit, temperature sensors TS2up and TS2down arranged in the second circuit upstream and downstream of the heat exchanger, respectively. A computer system connected to the temperature sensors and the temperature changing means is adapted to induce a temperature bolus within the first circuit of the ECBTD via the temperature changing means. From the individual temperature recorded as a function of time, temperature curves T2up(t) and T2down(t) are derived and evaluated.

Abstract: The system interacts with an apparatus for extracorporeal blood treatment, which is connected to the venous vascular system of the a patient via an inflow line and an outflow line. Temperature influencing means for causing an initial local temperature deviation T1 in the vicinity of a first point of the vascular system, as a result of which a traveling temperature change is introduced into the blood flow of the patient, a first temperature sensor for measuring the local temperature of the blood at a second point of the vascular system downstream of the first point, and a second temperature sensor for measuring the local temperature of the blood in the inflow line are provided. A computer system records the local blood temperature measured at the second point and at the inflow line, in each case as a function of time, and ascertains and evaluates a first and second thermodilution curve (TDK1, TDK2).