METHODS AND SYSTEMS FOR DETERMINING FLUID RESPONSIVENESS IN THE PRESENCE OF NOISE

摘要

Methods and systems are provided for determining fluid responsiveness in the presence of noise. The system may determine an instantaneous value indicative of fluid responsiveness. In some embodiments, the system may determine a difference between an instantaneous value indicative of fluid responsiveness and a previous value indicative of fluid responsiveness, and select an update characteristic based on whether the difference indicates that the fluid responsiveness is increasing or decreasing. In some embodiments, the system may determine a parameter indicative of fluid responsiveness based on the update characteristic and a previously reported value indicative of fluid responsiveness.

主权项

1. A physiological monitoring system comprising:
a light detecting sensor configured to:
detect light absorbed through tissue of a subject, andgenerate a physiological signal based on the detected light; and a processor coupled to the sensor configured to:
receive the physiological signal,determine an instantaneous value indicative of fluid responsiveness of the subject based on the physiological signal,determine a difference between the instantaneous value indicative of fluid responsiveness and a previous value indicative of fluid responsiveness of the subject,select an update characteristic based on whether the difference indicates the fluid responsiveness of the subject is increasing or decreasing, anddetermine a parameter indicative of fluid responsiveness of the subject based on the selected update characteristic and a previously reported value indicative of fluid responsiveness.