Abstract: The invention refers to a method of determining an indicator that is representative for a patient's volume responsiveness, comprising the following steps: (i) measuring a sequence of pulse signals of a patient; (ii) determining an envelope(signal)-curve based on the sequence of measured pulse signals; (iii) determining a fit(envelope(signal))-function based on the previously determined envelope(signal)-curve, the fit(envelope(signal))-function representing an idealised curve progression of the envelope(signal)-curve without comprising pulse variations caused by ventilation or respiration induced heart-lung interaction; (iv) determining respiratory pulse variation signals corresponding to the pulse variations caused by ventilation or respiration induced heart-lung interaction; (v) determining an envelope(respiration)-curve based on the previously determined respiratory pulse variation signals; (vi) determining a fit(envelope(respiration))-function based on the previously determined envelope(respiration)-curve,

Abstract: The present invention refers to a blood pressure measuring system (10) configured to surround a patient's body part (E), comprising pressurization means (12, 14) for applying pressure to the body part (E), and comprising a kinking-proof shell (20; 30), wherein the kinking-proof shell (20; 30) is arranged so as to be located between the pressurization means (12, 14) and the body part (E), when the blood pressure measuring system (10) surrounds the body part (E). The present invention further refers to a method of applying a blood pressure measuring system (10).

Abstract: The invention relates to a method for determining blood pressure in a blood vessel, according to which a pulse wave propagation time is caluculated in a measuring operation by means of at least two sensors arranged at a defined distance from one another. The method is characterized in that the blood pressure is calculated using a calibration carried out by means of a compression pressure measurement.

Abstract: The invention refers to a method of determining an indicator that is representative for a patient's volume responsiveness, comprising the following steps: (i) measuring a sequence of pulse signals of a patient; (ii) determining an envelope(signal)-curve based on the sequence of measured pulse signals; (iii) determining a fit(envelope(signal))-function based on the previously determined envelope(signal)-curve, the fit(envelope(signal))-function representing an idealized curve progression of the envelope(signal)-curve without comprising pulse variations caused by ventilation or respiration induced heart-lung interaction; (iv) determining respiratory pulse variation signals corresponding to the pulse variations caused by ventilation or respiration induced heart-lung interaction; (v) determining an envelope(respiration)-curve based on the previously determined respiratory pulse variation signals; (vi) determining a fit(envelope(respiration))-function based on the previously determined envelope(respiration)-curve,