Patent ID: 8834379
Filing Date: 2014-09-16
Classification: A61B,A61M

Abstract:
1. A system for providing an indication of cardiovascular function, the system comprising: a respiration input for receiving a respiration-related signal indicative of a physical property of respiration gases administered to a patient; a hemodynamic input for receiving a hemodynamic-related signal indicative of a hemodynamic property; an inspiration detector for processing the respiration-related signal to detect times of inspiration and a measure of a size of inspiration; a correlator for correlating the sizes of inspiration with the hemodynamic-related signal, to obtain the indication of cardiovascular function; a variance detector for determining a variance in the size of inspiration of successive inspirations; and a threshold means for comparing the variance of the size of inspiration with a threshold, wherein the correlator obtains the indication of cardiovascular function only if the variance exceeds the threshold.