Determining a characteristic respiration rate
First Claim
1. A method for determining a characteristic respiration rate of a patient by a pulse oximeter, the method comprising:
- receiving, using the pulse oximeter, a photoplethysmographic (PPG) signal derived from a pulse oximetry sensor, wherein the pulse oximetry sensor is configured to detect light attenuated by the patient;
determining, using the pulse oximeter, respiration rate values of the patient over time based at least in part on the PPG signal;
detecting, using the pulse oximeter, a first respiration rate event, wherein the first respiration rate event is detected based at least in part on a first deviation in the respiration rate values;
determining, using the pulse oximeter, a first altered portion of the respiration rate values based on the first respiration rate event;
determining, using the pulse oximeter, the characteristic respiration rate of the patient based at least in part on a selected portion of the respiration rate values, wherein;
the selected portion of the respiration rate values excludes the first altered portion of the respiration rate values;
the selected portion of the respiration rate values occurs earlier in time than the first altered portion of the respiration rate values;
the determining of the characteristic respiration rate is not based on the first altered portion of the respiration rate values; and
the characteristic respiration rate is determined to assess a clinical status of the patient; and
displaying, using an output of the pulse oximeter, the characteristic respiration rate.
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Accused Products
Abstract
The present disclosure relates to monitoring a characteristic respiration rate of a patient based at least in part on a suitable time period that either precedes or follows a triggering event, such as a clinician/patient interaction, where the triggering event may negatively impact the physiological parameter. In some embodiments, physiological parameter values falling between one or more pre-set thresholds may be used to derive the characteristic physiological parameter. In some embodiments, monitoring the respiration rate may provide additional information about the patient'"'"'s status. In some embodiments, confidence measures may be associated with, or may be used to analyze features of the patient signal to derive information about, the characteristic respiration rate. The patient signal used to derive a patient'"'"'s respiration rate may be of an oscillatory nature or may include oscillatory features that may be analyzed to derive a characteristic respiration rate.
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Citations
20 Claims
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1. A method for determining a characteristic respiration rate of a patient by a pulse oximeter, the method comprising:
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receiving, using the pulse oximeter, a photoplethysmographic (PPG) signal derived from a pulse oximetry sensor, wherein the pulse oximetry sensor is configured to detect light attenuated by the patient; determining, using the pulse oximeter, respiration rate values of the patient over time based at least in part on the PPG signal; detecting, using the pulse oximeter, a first respiration rate event, wherein the first respiration rate event is detected based at least in part on a first deviation in the respiration rate values; determining, using the pulse oximeter, a first altered portion of the respiration rate values based on the first respiration rate event; determining, using the pulse oximeter, the characteristic respiration rate of the patient based at least in part on a selected portion of the respiration rate values, wherein; the selected portion of the respiration rate values excludes the first altered portion of the respiration rate values; the selected portion of the respiration rate values occurs earlier in time than the first altered portion of the respiration rate values; the determining of the characteristic respiration rate is not based on the first altered portion of the respiration rate values; and the characteristic respiration rate is determined to assess a clinical status of the patient; and displaying, using an output of the pulse oximeter, the characteristic respiration rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for determining a characteristic respiration rate of a patient, the system comprising:
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a pulse oximetry sensor configured to generate a photoplethysmographic (PPG) signal, wherein the pulse oximetry sensor is configured to detect light attenuated by the patient; a pulse oximeter coupled to the pulse oximetry sensor, wherein the pulse oximeter is configured to; determine respiration rate values of the patient over time based at least in part on the PPG signal; detect a first respiration rate event, wherein the first respiration rate event is detected based at least in part on a first deviation in the respiration rate values; determine a first altered portion of the respiration rate values based on the first respiration rate event; and determine the characteristic respiration rate of the patient based at least in part on a selected portion of the respiration rate values, wherein; the selected portion of the respiration rate values excludes the first altered portion of the respiration rate values; the selected portion of the respiration rate values occurs earlier in time than the first altered portion of the respiration rate values; and the characteristic respiration rate is not determined based on the first altered portion of the respiration rate values; and an output coupled to the pulse oximeter, wherein the output is configured to display the characteristic respiration rate. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory computer-readable medium for use in determining a characteristic respiration rate of a patient, the computer-readable medium comprising:
computer program instructions recorded thereon for causing a pulse oximeter to; receive a photoplethysmographic (PPG) signal derived from a pulse oximetry sensor, wherein the pulse oximetry sensor is configured to detect light attenuated by the patient; determine respiration rate values of the patient over time based at least in part on the PPG signal obtained from a patient sensor; detect a first respiration rate event, wherein the first respiration rate event is detected based at least in part on a deviation in the respiration rate values; detect a first altered portion of the respiration rate values based on the first respiration rate event; determine the characteristic respiration rate of the patient based at least in part on a selected portion of the respiration rate values, wherein; the selected portion of the respiration rate values excludes the first altered portion of the respiration rate values; the selected portion of the respiration rate values occurs earlier in time than the first altered portion of the respiration rate values; the determining of the characteristic respiration rate is not based on the first altered portion of the respiration rate values; and the characteristic respiration rate is determined to assess a clinical status of the patient; and configure an output to display the characteristic respiration rate. - View Dependent Claims (20)
Specification