The diagnostic support apparatus detects a pulse waveform from an animate being, and measures the time difference between the arrival of a first pulse and the arrival of a second pulse. The first pulse, is the primary left ventricular ejection pulse, and corresponds to the first peak and the second pulse, is the iliac reflection pulse and corresponds to the third peak. Data storage can be provided for storing measured time differences between the first and the second pulses for a period of at least about fifteen real time seconds to produce statistically significant arterial pulse parameter data represented by the time difference. Data relating to blood volume and/or blood volume changes are monitored to show trend changes relative to a baseline value.
