A method is provided for determining blood pressure for a subject using a sphygmomanometer. The method includes: measuring an oscillometric cuff pressure waveform of the subject using the sphygmomanometer representing the measured waveform with a physical model accounting for mechanics of the cuff, an artery and coupling between the cuff and the artery determining the model unknowns from the measured waveform and determining blood pressure for the subject using the determined model.
