596936 Disclosed is an extracorporeal fluid system (20). The system (20) includes a device for processing a measurement signal obtained by a pressure sensor (4a) in the system (20) when the system (20) is connected to a vascular system of a subject. The device includes means (25) for receiving the measurement signal and means (23) for processing the measurement signal for identification of pressure data. The data includes information relating to at least one pulse, originating from a physiological phenomenon in the subject such that the physiological phenomenon does not include the heart of the subject.
