Monitoring system for identifying an end-exhalation carbon dioxide value of enhanced clinical utility
First Claim
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1. A medical monitoring device for evaluating a patient, comprising:
- a carbon dioxide sensing device that is adapted to receive at least a portion of exhaled flow from the patient and to produce a first output indicative of exhaled carbon dioxide associated with the exhaled flow;
an oximeter and a sensor in communication with the oximeter that is adapted to receive an input from the sensor when the sensor is mounted to the patient and to produce a second output indicative of oxygen saturation of blood of the patient;
and a processor adapted to receive at least the first output and the second output and to integrate at least the first output with the second output and to provide an indication indicative of the integration,wherein the carbon dioxide sensing device is a capnometer and the oximeter is a pulse oximeter, and wherein the processor is adapted to continuously receive said at least first and second outputs from said capnometer and said pulse oximeter and to continuously compute, in real-time, single unit-less index-values based on integration of said at least first and second outputs,wherein the single unit-less index-value is indicative of a respiratory status of the patient, such that a change in the single unit-less index-value is indicative of a change in the patient respiratory status, anda display adapted to receive the single unit-less index value, and to generate a display output of the singly unit-less index value, wherein the processor is adapted to update the display output to an update display output indicative of real-time changes of the respiratory status of the patient.
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Abstract
A medical monitoring system for identifying an end-exhalation carbon dioxide value of enhanced clinical utility is described herein. The medical monitoring system can include a capnometer for generating an output corresponding to a time-series of exhaled carbon dioxide values from a patient during an exhalation and a processor programmed to analyze the exhalation. In some examples, the processor can also be programmed to identify a peak carbon dioxide value at an end of the exhalation, determine if the peak carbon dioxide value may have been higher if the exhalation had been prolonged, and provide an output responsive to said determination.
634 Citations
32 Claims
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1. A medical monitoring device for evaluating a patient, comprising:
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a carbon dioxide sensing device that is adapted to receive at least a portion of exhaled flow from the patient and to produce a first output indicative of exhaled carbon dioxide associated with the exhaled flow; an oximeter and a sensor in communication with the oximeter that is adapted to receive an input from the sensor when the sensor is mounted to the patient and to produce a second output indicative of oxygen saturation of blood of the patient; and a processor adapted to receive at least the first output and the second output and to integrate at least the first output with the second output and to provide an indication indicative of the integration, wherein the carbon dioxide sensing device is a capnometer and the oximeter is a pulse oximeter, and wherein the processor is adapted to continuously receive said at least first and second outputs from said capnometer and said pulse oximeter and to continuously compute, in real-time, single unit-less index-values based on integration of said at least first and second outputs, wherein the single unit-less index-value is indicative of a respiratory status of the patient, such that a change in the single unit-less index-value is indicative of a change in the patient respiratory status, and a display adapted to receive the single unit-less index value, and to generate a display output of the singly unit-less index value, wherein the processor is adapted to update the display output to an update display output indicative of real-time changes of the respiratory status of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification