Abstract
Over 100 hundred years ago Anstie commented on the value of the sphygmograph but warned that it should be “used in conjunction with the strictest and most diligent observance of other means of clinical research.”2 Thirty years ago Godber wrote, “Though mechanical aids and measuring devices extend the capacity of the doctors to serve the patient, they do not replace him. They are the adjuncts to the human relationship between doctor and nurse and patient; they cannot replace the art.”3

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