Sepsis monitor
First Claim
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1. A patient monitoring method seeking to identify a sepsis condition in said patient, said method comprising:
- noninvasively generating a plurality of sensor signals responsive to physiological parameters indicative of an onset of a sepsis condition in a said patient, at least one of said sensor signals responsive to the output of a noninvasive optical sensor;
electronically computing measurements for said physiological parameters from the sensor signals, said parameters including at least, pulse rate, temperature, and respiration;
said respiration parameter responsive to measurements taken by an acoustic sensor applied to the neck, and said pulse rate parameter responsive to measurements taken by a pulse oximeter applied to a digit;
applying a plurality of predetermined rules to the physiological parameters so as to determine the onset of the sepsis condition; and
indicating to an observer the potential existence of the sepsis condition.
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Abstract
Sensors are attached to a living being so as to generate corresponding sensor signals. A monitor is in communications with the sensors so as to derive physiological parameters responsive to the sensor signals. Predetermined limits are applied to the physiological parameters. At least one indicator responsive to the physiological parameters and the predetermined limits signal the onset of a sepsis condition in the living being.
792 Citations
11 Claims
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1. A patient monitoring method seeking to identify a sepsis condition in said patient, said method comprising:
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noninvasively generating a plurality of sensor signals responsive to physiological parameters indicative of an onset of a sepsis condition in a said patient, at least one of said sensor signals responsive to the output of a noninvasive optical sensor; electronically computing measurements for said physiological parameters from the sensor signals, said parameters including at least, pulse rate, temperature, and respiration; said respiration parameter responsive to measurements taken by an acoustic sensor applied to the neck, and said pulse rate parameter responsive to measurements taken by a pulse oximeter applied to a digit; applying a plurality of predetermined rules to the physiological parameters so as to determine the onset of the sepsis condition; and indicating to an observer the potential existence of the sepsis condition. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of electronically monitoring signals indicative of a patient condition to determine when to warn a caregiver that said patient condition is indicative of sepsis, the method comprising:
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outputting a first signal from a noninvasive optical sensor applied to a digit indicative of an absorption of light by body tissue of said patient, said first signal also indicative of one or more physiological parameters of said patient including a pulse rate; outputting a second signal from a noninvasive acoustic sensor applied to an area of skin around a patient'"'"'s throat where said second signal is indicative of acoustically sensed tracheal sounds; outputting a third signal from a thermal sensor wherein the signal is indicative of a temperature of the patient; electronically processing with a processor said first signal to output measurement values for said one or more physiological parameters including at least the pulse rate, processing with said processor said second signal to output measurement values for respiration, and processing with said processor said third single to output measurement values for said temperature; electronically applying with said processor a plurality of predetermined rules to said measurement values; and when said application of said rules indicates said patient condition is indicative that sepsis potentially exists, or that sepsis likely exists, outputting at least one of an audio or visual indication to said caregiver that sepsis potentially exists, or that sepsis likely exists respectively according to the indication from the application of the rules. - View Dependent Claims (8, 9, 10, 11)
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Specification