A method of estimating blood pressure Pulse Wave Velocity (PWV) in the aorta from a recording of a pressure waveform at a single site. The method comprises the following steps: 1. measuring the patients arterial pressure relative to time in order to estimate a central pressure waveform (CPW) 2. estimating the patients aortic pressure pulse transit time (PPTT) from the CPW 3. estimating the patients carotid to femoral arterial distance from the patients physical characteristics and 4. dividing the patients estimated carotid to femoral arterial distance by the patients estimated PPTT to estimate the patients PWV.
