MONITORING CARDIAC OUTPUT AND VESSEL FLUID VOLUME
First Claim
Patent Images
1. A patient monitoring system comprising:
- at least two noninvasive sensors for emitting energy into at least two patient measurement sites and detecting the energy attenuated by the patient measurement sites;
a processing board comprising;
an instrument manager including a memory buffer; and
wherein the instrument manager is adapted to determine an indication of cardiac output using differences in the attenuated energy detected by the at least two sensors at the at least two measurement sites; and
a display adapted to output at least one indication of cardiac output.
4 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure describes embodiments of a patient monitoring system and methods that include the measure and display of hemoglobin statistics, cardiac output statistic and vessel volume statistics. In an embodiment, total hemoglobin trending, cardiac output, or vessel volume is displayed over a period of time. Statistics can include frequency domain analysis, differences between measurement sites, or further calculations based on concentrations and volume of fluids added to a patient which may be unique for each patient monitored. The total trending and/or statistics can further be used to help control the treatment of a patient, such as being used to control IV administration.
-
Citations
21 Claims
-
1. A patient monitoring system comprising:
-
at least two noninvasive sensors for emitting energy into at least two patient measurement sites and detecting the energy attenuated by the patient measurement sites; a processing board comprising; an instrument manager including a memory buffer; and wherein the instrument manager is adapted to determine an indication of cardiac output using differences in the attenuated energy detected by the at least two sensors at the at least two measurement sites; and a display adapted to output at least one indication of cardiac output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A patient monitor device comprising:
-
a processing device capable of accepting signals indicative of optical energy attenuated by patient tissue detected from a noninvasive, optical sensor and further capable of interpreting the signals as a measurement of hemoglobin and calculating fluid volume measurements based at least in part on the measurement of hemoglobin; a memory for storing a plurality of hemoglobin measurements interpreted by the processing device; and a display for displaying the fluid volume measurements. - View Dependent Claims (12, 13, 14, 15)
-
-
16. A method for monitoring patient cardiac output levels, the method comprising:
-
emitting energy into at least two patient measurement sites for attenuation by the at least two measurement sites; detecting attenuated energy from the at least two measurement sites; determining a plurality of indications of differences of blood oxygenation between the two measurements sites from the detected attenuated energy over a period of time; calculating an indication of cardiac output based on the differences of blood oxygenation; and displaying the indications of cardiac output. - View Dependent Claims (17, 18, 19)
-
-
20. A method for treating a patient based on determined vessel volume levels, the method comprising:
-
emitting energy into a patient measurement site for attenuation by the measurement site; detecting attenuated energy from the measurement site; determining a plurality of indications of total hemoglobin from the detected attenuated energy over a period of time; determining a measure of vessel volume based on the indications of total hemoglobin; and electronically determining a treatment based at least in part on the measure of vessel volume; and administering the treatment. - View Dependent Claims (21)
-
Specification