Burn Patient Resuscitation System
AssigneesBoard of Regents, The University of Texas System, United States Government as represented by the Secretary of the Army
InventorsJose Salinas, George C. Kramer, Guy A. Drew
Life of this patent
Estimating the term…
Abstract
A system for operating a semi-closed loop and/or a closed loop resuscitation of a burn patient in view of patient information and other physiological data gathered by the system. The system in at least one embodiment includes an urine sensor, an infusion pump and a processor that controls the operation of the infusion pump at least in part from a signal received from the urine sensor.
Claims20
A system for use in resuscitating a patient comprising:
- a urine sensor;
- an infusion pump;
- an electronic medical records interface;
- and
- a processor connected to said urine sensor and said infusion pump, said processor having
- means for calculating an infusion rate using an infusion rate model based on at least a current infusion rate received from at least one of said infusion pump and said electronic medical records interface, a current urinary output, and infusion rate model based constants, the new infusion rate is calculated using the following equation
- I
- t
- =
- I
- t
- -
- 1
- +
-
-
- (
- t
- )
- ×
- IRC
- t
- UOC
- t
- where It is the new infusion rate, It-1 is the last infusion rate, e(t) is the urinary output error between the current urinary output and a target urinary output, IRCt is the infusion rate constant at time t based on the hours post burn, and UOCt is the urinary constant.
A system for use in resuscitating a patient comprising:
- a urine sensor;
- an infusion pump;
- an electronic medical records system;
- a timer;
- and
- a processor connected to said urine sensor, said infusion pump, and said timer, said processor having program code embodied therewith, the program code executable by said processor to
- calculate an infusion rate in response to a signal from said timer and based on at least the current infusion rate received from at least one of said infusion pump and said electronic medical records system, the current urinary output received from at least one of said urine sensor and said electronic medical records system, infusion rate model based constants, a patient's weight received from said electronic medical records system, a percentage of total body surface area received from said electronic medical records system, and a Gaussian function centered on a target urinary output.
A system for use in resuscitating a patient comprising:
- a urine sensor;
- an infusion pump;
- a display;
- an electronic medical records system;
- receiving means for receiving patient data including percentage of total body surface area burned and time since the patient was burned from said electronic medical records system;
- first means for calculating an initial infusion rate based on at least the received patient data based on a predetermined formula;
- second means for calculating an urinary output error based on a difference between a target urinary output and a current urinary output provided by at least one of said urine sensor and said electronic medical records system;
- third means for calculating a new infusion rate based on at least the calculated urinary output error multiplied by a constant calculated in part based on an exponential function with the input of hours post burn for the patient with the result being added to the current infusion rate;
- outputting means for outputting the new infusion rate to at least one of said display, said electronic medical records system, and said infusion pump;
- and
- a timer for controlling the operation of said second means, said third means and said outputting means.
Dependencies are inferred from the claim text.