Performing measurements using sensors of a medical device system

1 . A medical device system comprising:

a medical device configured to measure a patient parameter via one or more light emitters and one or more light detectors of the medical device; and

processing circuitry configured to:

perform a first evaluation of a plurality of evaluations, wherein to perform the first evaluation, the processing circuitry is configured to:

determine, in a first instance, and when a first ambient light measurement associated with a first respective measurement of the patient parameter satisfies an ambient light measurement criterion, to control the medical device to perform the first respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device; and

complete the first evaluation based on determining to control the medical device to perform the first respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors;

control, based on the first evaluation, the medical device to perform the first respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device;

perform a second evaluation of the plurality of evaluations, wherein to perform the second evaluation, the processing circuitry is configured to:

determine, in a second instance, and when a second ambient light measurement associated with a second respective measurement of the patient parameter does not satisfy the ambient light measurement criterion, not to control the medical device to perform the second respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device; and

complete the second evaluation based on determining not to control the medical device to perform the second respective measurement of the patient parameter; and

control, based on the second evaluation, the medical device not to perform the second respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device.

2 . The medical device system of claim 1 , wherein the patient parameter comprises one of: tissue oxygen saturation (StO 2 ), regional oxygen saturation (rSO 2 ), pulse oximetry (SpO 2 ), venous oxygen saturation (SvO 2 ), arterial oxygen saturation (SaO 2 ), subcutaneous tissue impedance, heart rate, heart rate variability, respiration rate, respiration volume, pulse transit time, temperature, or tissue hemoglobin index (THI).

3 . The medical device system of claim 1 , wherein, for the first evaluation, the processing circuitry is configured to:

control the medical device to perform the first ambient light measurement;

control a motion sensor to perform a first motion level measurement associated with the first respective measurement of the patient parameter; and

determine, based on the first ambient light measurement and the first motion level measurement, to control the medical device to perform the first respective measurement of the patient parameter, and

wherein, for the second evaluation, the processing circuitry is configured to:

control the medical device to perform the second ambient light measurement;

control a motion sensor to perform a second motion level measurement associated with the second respective measurement of the patient parameter; and

determine, based on the second ambient light measurement and the second motion level measurement, not to control the medical device to perform the second respective measurement of the patient parameter.

4 . The medical device system of claim 3 , wherein to determine to control the medical device to perform the measurement of the patient parameter for the first evaluation, the processing circuitry is configured to:

receive, from the medical device, data corresponding to the first ambient light measurement;

receive, from the motion sensor, data corresponding to the first motion level measurement;

determine, based on the data corresponding to the first motion level measurement, a first motion level associated with a patient;

determine, based on the data corresponding to the first ambient light measurement, a first amount of ambient light present in target tissue;

compare the first motion level with a threshold motion level; and

compare the first amount of ambient light with a threshold amount of ambient light, and wherein, to determine not to control the medical device to perform the measurement of the patient parameter for the second evaluation, the processing circuitry is configured to:

receive, from the medical device, data corresponding to the second ambient light measurement;

receive, from the motion sensor, data corresponding to the second motion level measurement;

determine, based on the data corresponding to the second motion level measurement, a second motion level associated with the patient;

determine, based on the data corresponding to the second ambient light measurement, a second amount of ambient light present in target tissue;

compare the second motion level with the threshold motion level; and

compare the second amount of ambient light with the threshold amount of ambient light.

5 . The medical device system of claim 4 , wherein, for the first evaluation, the processing circuitry is configured to:

control the medical device to perform a first optical test measurement associated with the first respective measurement of the patient parameter; and

determine, based on the first ambient light measurement, the first motion level measurement, and the first optical test measurement, to control the medical device to perform the first respective measurement of the patient parameter, and

wherein, for the second evaluation, the processing circuitry is configured to:

control the medical device to perform a second sensor test measurement associated with the second respective measurement of the patient parameter; and

determine, based on the second ambient light measurement, the second motion level measurement, and the second sensor test measurement, not to control the medical device to perform the second respective measurement of the patient parameter.

6 . The medical device system of claim 5 , wherein to determine to control the medical device to perform the first respective measurement of the patient parameter for the first evaluation, the processing circuitry is further configured to:

receive, from the medical device, a first optical test signal corresponding to the first optical test measurement; and

determine, based on the first optical test signal, that the first optical test signal quality satisfies a sensor test signal threshold, and

wherein to determine not to control the medical device to perform the measurement of the patient parameter for the second evaluation, the processing circuitry is further configured to:

receive, from the medical device, a second sensor test signal corresponding to the second optical test measurement; and

determine, based on the second optical test signal, that the second sensor test signal quality does not satisfy the sensor test signal threshold.

7 . The medical device system of claim 6 , wherein, for the second evaluation, the processing circuitry is configured to determine not to control the medical device to perform the second respective measurement of the patient parameter in response to a determination that one or more of:

the second motion level is greater than or equal to the threshold motion level;

the second amount of ambient light is greater than or equal to the threshold amount of ambient light; or

the second sensor test signal quality is does not satisfy the optical test signal threshold, and

wherein, for the first evaluation, the processing circuitry is configured to determine to control the medical device to perform the first respective measurement of the patient parameter in response to a determination that:

the first motion level is less than the threshold motion level;

the first amount of ambient light is less than the threshold amount of ambient light; and

the first sensor test signal quality satisfies the optical test signal threshold.

8 . The medical device system of claim 7 , wherein responsive to the processing circuitry controlling the medical device to perform the first respective measurement, the processing circuitry is configured to:

receive data corresponding to the first respective measurement of the patient parameter;

determine, based on the data corresponding to the first respective measurement of the patient parameter, a first patient parameter value; and

classify, based on a set of classification parameters measured via the one or more light emitters and the one or more light detectors, the first patient parameter value.

9 . The medical device system of claim 8 , wherein to classify the first respective measurement, the processing circuitry is configured to:

obtain data indicative of one or more values of the set of classification parameters, wherein the one or more values are measured within a time window associated with a time in which the first respective measurement is performed;

associate the one or more values of the set of classification parameters with the first patient parameter value;

add the first patient parameter value to a set of patient parameter values, wherein each patient parameter value of the set of patient parameter values is associated with a respective measurement of the patient parameter, the respective measurement corresponding to a respective one or more values of the set of classification parameters; and

analyze, based on at least a subset of the set of classification parameters, the set of patient parameter values.

10 . The medical device system of claim 8 , wherein the set of classification parameters includes any one or more of an amount of StO 2 , an amount of rSO 2 , a SpO 2 value, an amount of SvO 2 , an amount of SaO 2 , a level of ambient light present in the tissue, an optical test signal, a temperature of the target tissue, a posture of the patient, a respiration rate, a respiration volume, a heart rate, a heart rate variability, a tissue hemoglobin index (THI) value, or a subcutaneous tissue impedance.

11 . The medical device system of claim 5 , wherein, for the first evaluation, the processing circuitry is additionally configured to determine to perform one or more actions corresponding to using the first respective measurement of the patient parameter to track the patient condition, and wherein the processing circuitry is configured to determine not to use the first respective measurement of the patient parameter to track the patient condition in response to determining one or more of:

the first motion level is greater than or equal to the threshold motion level;

the first amount of ambient light is greater than or equal to the threshold amount of ambient light; or

the first optical test signal quality does not satisfy the optical test signal threshold, and

wherein the processing circuitry is configured to determine to use the first respective measurement of the patient parameter to track the patient condition in response to determining:

the first motion level is less than the threshold motion level;

the first amount of ambient light is less than the threshold amount of ambient light; and

the first optical test signal quality satisfies the optical test signal threshold.

12 . The medical device system of claim 5 , wherein the medical device further comprises the motion sensor, wherein, for the first evaluation, the processing circuitry is configured to:

control the medical device to perform the first ambient light measurement via the one or more light emitters and the one or more light detectors;

control the motion sensor of the medical device to perform the first motion level measurement; and

control the medical device to perform the first sensor test measurement via the one or more light emitters and the one or more light detectors.

13 . The medical device system of claim 1 , wherein responsive to controlling the medical device to perform the first respective measurement of the patient parameter, the processing circuitry is further configured to:

receive, from the medical device, data corresponding to the first respective measurement of the patient parameter;

determine, based on the data corresponding to the first respective measurement of the patient parameter, a first patient parameter value; and

add the first patient parameter value to a set of patient parameter values, wherein each patient parameter value of the set of patient parameter values is associated with a respective measurement of the patient parameter.

14 . The medical device system of claim 13 , wherein the processing circuitry is further configured to:

identify, based on the set of patient parameter values, a trend of the patient parameter; and

determine whether the trend of the patient parameter is stable.

15 . The medical device system of claim 14 , wherein if the processing circuitry determines that the trend of the patient parameter is not stable, the processing circuitry is configured to:

control performance of a confirmatory parameter measurement associated with the first respective measurement of the patient parameter.

16 . The medical device system of claim 15 , wherein the processing circuitry is configured to control the medical device to perform the confirmatory parameter measurement.

17 . The medical device system of claim 16 , wherein the processing circuitry is configured to:

receive data corresponding to the confirmatory parameter measurement;

determine, based on the data corresponding to the confirmatory parameter measurement, a confirmatory parameter value;

compare the confirmatory parameter value with a threshold confirmatory parameter value; and

based on the comparison between the confirmatory parameter value and the threshold confirmatory parameter value, determine whether to output an alert.

18 . The medical device system of claim 1 , wherein to perform one or more actions corresponding to controlling the medical device to perform the first respective measurement of the patient parameter, the processing circuitry is configured to:

determine whether to delay the first respective measurement of the patient parameter by an amount of time.

19 . The system of claim 1 , wherein the processing circuitry is additionally configured to:

determine, based on the first ambient light measurement associated with the first respective measurement of the patient parameter, to perform one or more actions corresponding to using the first respective measurement of the patient parameter to track a patient condition; and

complete the first evaluation based on determining to perform one or more actions corresponding using the first respective measurement of the patient parameter to track the patient condition.

20 . A method comprising:

performing, by processing circuitry of the medical device system, a first evaluation of a plurality of evaluations, wherein performing the first evaluation comprises:

determining, in a first instance and based on a first ambient light measurement associated with a first respective measurement of the patient parameter satisfying an ambient light criterion, to control a medical device to perform the first respective measurement of the patient parameter via one or more light emitters and one or more light detectors of the medical device; and

completing, by the processing circuitry, the first evaluation based on determining to perform one or more actions corresponding to controlling the medical device to perform the first respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device;

performing, by the processing circuitry, the one or more actions corresponding to controlling, based on the first evaluation, the medical device to perform the first respective measurement of the patient parameter;

performing, by the processing circuitry, a second evaluation of the plurality of evaluations, wherein performing the second evaluation comprises:

determining, in a second instance and based on a second ambient light measurement associated with a second respective measurement of the patient parameter not satisfying the ambient light criterion, not to control the medical device to perform the second respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device; and

complete the second evaluation based on determining not to control the medical device to perform the second respective measurement of the patient parameter; and

not performing, by the processing circuitry, the one or more actions corresponding to controlling, based on the second evaluation, the medical device to perform the second respective measurement of the patient parameter.

21 . A non-transitory computer readable medium comprising instructions that when executed cause one or more processors to:

perform a first evaluation of a plurality of evaluations, wherein to perform the first evaluation, the instructions cause the one or more processors to:

determine, in a first instance and based on a first ambient light measurement associated with a first respective measurement of the patient parameter satisfying an ambient light criterion, to control a medical device to perform the first respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device; and

complete the first evaluation based on determining to perform one or more actions corresponding to controlling the medical device to perform the first respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device;

control, based on the first evaluation, the medical device to perform the first respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device;

perform a second evaluation of the plurality of evaluations, wherein to perform the second evaluation, the instructions cause the one or more processors to:

determine, in a second instance and based on a second ambient light measurement associated with a second respective measurement of the patient parameter not meeting the ambient light criterion, not to control the medical device to perform the second respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device; and

complete the second evaluation based on determining not to control the medical device to perform the second respective measurement of the patient parameter; and

control, based on the second evaluation, the medical device not to perform the second respective measurement of the patient parameter via the one or more light emitters and the one or more light detectors of the medical device.