SYSTEMS AND METHODS FOR DETERMINING FLUID RESPONSIVENESS IN THE PRESENCE OF GAIN CHANGES AND BASELINE CHANGES

摘要

Methods and systems are provided for determining fluid responsiveness based on physiological signals. The system may detect gain changes or excessive baseline modulations. In some embodiments, based on the detected gain changes or excessive baseline modulations, the system may ignore portions of physiological signals and determine a parameter indicative of fluid responsiveness based on a plurality of amplitudes determined from other portions of the physiological signals. In some embodiments, based on the detected gain changes or excessive baseline modulations, the system may determine fluid responsiveness, or refrain from determining fluid responsiveness.

主权项

1. A physiological monitor for monitoring fluid responsiveness of a subject comprising:
a signal generating module configured to generate a physiological signal that is indicative of light attenuated by a subject; a gain change identification module configured to identify a gain change in the signal generating module; and a fluid responsiveness parameter determination module configured to:
receive the physiological signal from the signal generating module;receive the gain change identification from the gain change identification module;determine a first plurality of amplitudes in a first portion of the physiological signal;ignore a second portion of the physiological signal, subsequent to the first portion, based on the received gain change identification;determine a second plurality of amplitudes in a third portion of the physiological signal, subsequent to the second portion; anddetermine the parameter indicative of fluid responsiveness based on the first plurality of amplitudes and the second plurality of amplitudes, and not based on the ignored second portion of the physiological signal.