Procedure for determining at least one physiological parameter (P) of a patient (2), in which a) a pulse measurement signal (PM) of a pulse pressure wave (18) is recorded, which is propagated starting from the heart inside the blood vessels, at a pulse measurement location (15), by means of a pulse sensor (4) b) from the pulse measurement signal (PM), recorded by signal processing, is generates a corrected pulse measurement signal (PK) and c) the at least one physiological parameter (P) is determined by the corrected pulse measurement signal (PK), d) by submitting the registered pulse measurement signal (PM), for generating the corrected pulse measurement signal (PK), to adaptive filtering in order to compensate for the influence of a reflected component (17) of the pulse pressure wave (18), characterized in that, in the In the case of filtering, it is an adaptive filtering with a characteristic Filter technique that adapts dynamically, e) decomposing the registered pulse measurement signal (PM) into measurement segments, which are to be associated in each case with a heartbeat, finding out from each measurement segment, by filtering adaptive, a corrected segment and joining the corrected segments generated in this way to form the corrected pulse measurement signal (PK).Procedimiento para la determinación de al menos un parámetro fisiológico (P) de un paciente (2), en el que a) se registra una señal de medición de pulsos (PM) de una onda de presión de pulso (18), que se propaga partiendo del corazón dentro de los vasos sanguíneos, en un lugar de medición de pulsos (15), mediante un sensor de pulso (4) b) a partir de la señal de medición de pulsos (PM), registrada mediante procesamiento de señales, se genera una señal de medición de pulsos corregida (PK) y c) se averigua el al menos un parámetro fisiológico (P) mediante la señal de medición de pulsos corregida (PK), d) sometiéndose la señal de medición de pulsos registrada (PM), para la generación de la señal de medi
