METHODS AND SYSTEMS FOR DETERMINING FLUID RESPONSIVENESS
First Claim
1. A physiological monitor for monitoring fluid responsiveness of a subject, comprising:
- an input configured to receive a physiological signal; and
a fluid responsiveness parameter determination module configured to;
receive the physiological signal;
determine a parameter indicative of fluid responsiveness based on the physiological signal;
receive respiration information of the subject;
determine a correction factor of the parameter indicative of fluid responsiveness based on the respiration information; and
determine a corrected parameter indicative of fluid responsiveness based on the parameter indicative of fluid responsiveness and the correction factor.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and systems are provided for determining fluid responsiveness based on a physiological signal. The system may determine fluid responsiveness based on the physiological signal and receive or determine respiration information of the subject. The system may correct the fluid responsiveness based on the respiration information. In some embodiments, the system may determine a correction factor to correct the fluid responsiveness values based on a relationship between fluid responsiveness and the respiration information. In some embodiments, the system may correct the measured fluid responsiveness based on an error between the fluid responsiveness measure and another measure such as pulse pressure variation, where there is a relationship between the error and the respiration information.
17 Citations
20 Claims
-
1. A physiological monitor for monitoring fluid responsiveness of a subject, comprising:
-
an input configured to receive a physiological signal; and a fluid responsiveness parameter determination module configured to; receive the physiological signal; determine a parameter indicative of fluid responsiveness based on the physiological signal; receive respiration information of the subject; determine a correction factor of the parameter indicative of fluid responsiveness based on the respiration information; and determine a corrected parameter indicative of fluid responsiveness based on the parameter indicative of fluid responsiveness and the correction factor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. 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 respiration detection module configured to determine a respiration rate of the subject; and a fluid responsiveness parameter determination module configured to determine a parameter indicative of fluid responsiveness based on respiratory modulations in the physiological signal and the respiration rate of the subject. - View Dependent Claims (13, 14, 15, 16, 17, 18)
-
-
19. A method for determining fluid responsiveness in a subject comprising:
-
receiving a physiological signal; determining respiration information of the subject based on the physiological signal; determining a plurality of amplitudes in the physiological signal; determining a parameter indicative of fluid responsiveness of the subject based on the plurality of amplitudes; calculating a correction factor based on the respiration information and the parameter indicative of fluid responsiveness of the subject; and determining a corrected parameter indicative of fluid responsiveness of the subject based on the correction factor and the parameter indicative of fluid responsiveness of the subject. - View Dependent Claims (20)
-
Specification