The method serves to determine at least one physiological parameter of a patient. A pulse measurement signal of a pulse pressure wave propagating within the blood vessels and emanating from the heart is acquired at a pulse measurement point. A corrected pulse measurement signal is produced from the acquired pulse measurement signal by means of signal processing. The at least one physiological parameter is ascertained on the basis of the corrected pulse measurement signal. For the purposes of producing the corrected pulse measurement signal, the acquired pulse measurement signal is subjected to adaptive filtering with a dynamically adapting filter characteristic in order to compensate the influence of a reflected component of the pulse pressure wave.