PPG measurement of arterial health using disease library

A method of assessing arterial health of an individual comprising:

• a) positioning one arm of the individual such that the arm is at the same height as a heart of the individual;
• b) attaching a fingertip photoplethysmography device to a fingertip of a hand of said arm of the individual;
• c) measuring an analog pulse contour of the individual using the fingertip photoplethysmography device;
• d) digitizing the analog pulse contour;
• e) analyzing the digitized analog pulse contour for stability by analyzing the digitized pulse contour for two consecutive pulse heights such that the second pulse height of the two consecutive pulse heights is within 10% of the first pulse height of the two consecutive pulse heights thereby finding stability, and then after stability is found, measuring and storing waveforms of the digitized analog pulse contour immediately subsequent to the two consecutive pulse heights, the subsequent waveforms being stable waveforms;
• f) processing the stable waveforms of the digitized analog pulse contour;
• g) comparing the stable waveforms to a library of known disease state waveforms;
• and
• h) assigning a most probable disease state for the individual based on said comparison, and presenting said most probable disease state to a user.