Abstract: Method for determining the stroke volume of a heart comprising: attaching electrodes to the front legs or arms or head, and the hind legs of the body; connecting an alternating current source to the left pair of front legs/arms or head, and hind legs; connecting an alternating current source to the right pair of front legs/arms or head, and hind legs; attaching a number of electrode pairs to the thoracic skin, such that the electrodes are in contact with the skin of the thorax at predetermined positions, wherein the electrode pairs are each connected to an independent input of a data acquisition/calculation device; determining the beginning the cardiac cycle and measuring with the number of electrode pairs on the thorax the voltage at the beginning of the cardiac cycle at the predetermined positions; measuring during the cardiac cycle with the number of electrode pairs on the thorax the voltages at the predetermined positions and determining the voltage changes Vmeas(?) compared to the voltage at the beginnin

Abstract: Method for determining the stroke volume of a heart comprising: attaching electrodes to the front legs or arms or head, and the hind legs of the body; connecting an alternating current source to the left pair of front legs/arms or head, and hind legs; connecting an alternating current source to the right pair of front legs/arms or head, and hind legs; attaching a number of electrode pairs to the thoracic skin, such that the electrodes are in contact with the skin of the thorax at predetermined positions, wherein the electrode pairs are each connected to an independent input of a data acquisition/calculation device; determining the beginning the cardiac cycle and measuring with the number of electrode pairs on the thorax the voltage at the beginning of the cardiac cycle at the predetermined positions; measuring during the cardiac cycle with the number of electrode pairs on the thorax the voltages at the predetermined positions and determining the voltage changes Vmeas(?) compared to the voltage at the beginnin

Abstract: The invention relates to a catheter system adapted for pressure sensing. It comprises a transmitter/receiver for polarized light and an optical fiber to be connected to said transmitter/receiver, said fiber at its distal end being provided with a cylindrical body of transparent plastic material, and said body having a hollow central inner lumen provided around its longitudinal axis, and said cylindrical body is provided with a mirror at its side facing away from said fiber.