Patent ID: 8275553
Filing Date: 2012-09-25
Classification: A61B,G16H

Abstract:
1. A method of evaluating physiological parameter data, comprising: monitoring a patient to produce a signal comprising a sequence of numerical values for a physiological parameter over a time period; calculating an index based at least in part upon the signal; comparing the calculated index to a reported index, and if the calculated index is greater than the reported index, setting the reported index to the value of the calculated index; calculating a modulation of the signal, wherein the modulation comprises the difference between a maximum value of the signal and a minimum value of the signal divided by a mean value of the signal over a period of time; comparing the modulation to a previous value of the modulation of the signal to identify a trend in the modulation, and if the trend corresponds to an undesirable condition, using a first function capable of increasing the reported index; and providing an indication of a physiological status based at least in part upon the reported index.