System and Method for Monitoring Level of Dexmedatomidine-Induced Sedation

• US 20140323898A1
• Filed: 04/24/2014
• Published: 10/30/2014
• Est. Priority Date: 04/24/2013
• Status: Abandoned Application

• Current Assignee: The General Hospital Corporation (Mass General Brigham, Inc.)
• Original Assignee: The General Hospital Corporation (Mass General Brigham, Inc.)
• Inventors: Purdon, Patrick L., Brown, Emery N., Prerau, Michael J., Johnson-Akeju, Oluwaseun
• Application Number:
  US14/261,188
• Publication Number:
  US 20140323898A1
• Time in Patent Office: Days
• US Class Current: 600/544
• CPC Class Codes: A61B 5/16 Devices for psychotechnics using teaching or educational appliances G09B1/00 - G09B7/00; Testing reaction times ; Devices for evaluating the psychological state
• CPC Class Codes: A61B 5/374 Detecting the frequency distribution of signals, e.g. detecting delta, theta, alpha, beta or gamma waves
• CPC Class Codes: A61B 5/4821 Determining level or depth of anaesthesia A61B5/1106 takes precedence

Abstract

A system and method for monitoring a patient experiencing an administration of at least one anesthetic drug. In certain embodiments, the method includes arranging sensors configured to acquire physiological data from a patient and reviewing the physiological data from the sensors and an indication received from an input. The method also includes assembling the physiological data into sets of time-series data and determining, from the sets of time-series data, a first set of signals in a first frequency range and a second set of signals in a second frequency range, the first set of signals describing a transient oscillation signature and the second set of signals describing a target wave signature. The method further includes identifying, using the transient oscillation and target wave signatures, a degree of sedation consistent with the administration of the anesthetic drug, and generating a report indicative of the degree of sedation induced by the drug.

Claims

1. A system for monitoring a patient experiencing an administration of at least one drug having anesthetic properties, the system comprising:

an input configured to receive physiological data from at least one sensor coupled to the patient;

at least one processor configured to;

receive the physiological data from the input;

assemble the physiological data into sets of time-series data;

determine, from the sets of time-series data, a first set of signals in a first frequency range and a second set of signals in a second frequency range, the first set of signals describing a transient oscillation signature and the second set of signals describing a target wave signature;

identify, using the transient oscillation and target wave signatures, a degree of sedation consistent with the administration of at least one drug having anesthetic properties; and

generate a report indicative of the degree of sedation induced by the at least one drug having anesthetic properties.

2. The system of claim 1, wherein the first frequency range comprises a frequency range between 12 Hz and 16 Hz.

3. The system of claim 1, wherein the second frequency range comprises a frequency range between 0.1 to 6 Hz.

4. The system of claim 1, wherein the transient oscillation signature is defined by at least one of an activity rate, a sigma power, and an amplitude.

5. The system of claim 1, wherein the target wave signature is defined by at least one of a slow wave power, a slow wave amplitude, a delta wave power, and a delta wave amplitude.

6. The system of claim 1, wherein the at least one processor is further configured to determine the first set of signals using a transient oscillation detection technique.

7. The system of claim 6, wherein the transient oscillation technique comprises projecting the sets of time-series data onto a pre-determined basis defined by a series of eigenfunctions, and computing posterior probabilities indicative of signals belonging to a transient oscillation event.

8. The system of claim 1, wherein the at least one processor is further configured to determine a probability of response to at least one of an auditory stimulus, a verbal stimulus and a somatosensory stimulus using the degree of sedation.

9. The system of claim 1 wherein the at least one processor is further configured to receive from the input an indication comprising a characteristic of the patient, a drug selecting from the list consisting essentially of Propofol, Etomidate, Barbiturates, Thiopental, Pentobarbital, Phenobarbital, Methohexital, Benzodiazepines, Midazolam, Diazepam, Lorazepam, Dexmedetomidine, Ketamine, Sevoflurane, Isoflurane, Desflurane, Remifenanil, Fentanyl, Sufentanil, Alfentanil, and drug administration information including at least one of drug timing, drug dose, drug administration rate, and target endpoint.

10. The system of claim 9, wherein the at least one processor is further configured to guide administration of the at least one drug having anesthetic properties to a target endpoint, using the degree of sedation and the indication.

11. A method for monitoring a patient experiencing an administration of at least one drug having anesthetic properties, the method comprising:

arranging at least one sensor configured to acquire physiological data from a patient;

reviewing the physiological data from the at least one sensor and an indication received from an input;

assembling the physiological data into sets of time-series data;

determining, from the sets of time-series data, a first set of signals in a first frequency range and a second set of signals in a second frequency range, the first set of signals describing a transient oscillation signature and the second set of signals describing a target wave signature;

identifying, using the transient oscillation and target wave signatures, a degree of sedation consistent with the administration of at least one drug having anesthetic properties; and

generating a report indicative of the degree of sedation induced by the at least one drug having anesthetic properties.

12. The method of claim 11, wherein the first frequency range comprises a frequency range between 12 Hz and 16 Hz.

13. The method of claim 11, wherein the second frequency range comprises a frequency range between 0.1 to 6 Hz.

14. The method of claim 11, wherein the transient oscillation signature is defined by at least one of an activity rate, a sigma power, an amplitude.

15. The method of claim 11, wherein the target wave signature is defined by at least one of a slow wave power, a slow wave amplitude, a delta wave power, and a delta wave amplitude.

16. The method of claim 11, wherein the method further comprises determining the first set of signals using a transient oscillation detection technique.

17. The system of claim 16, wherein the transient oscillation technique comprises projecting the sets of time-series data onto a pre-determined basis defined by a series of eigenfunctions, and computing posterior probabilities indicative of signals belonging to a transient oscillation event.

18. The method of claim 11, wherein the method further comprises determining a probability of response to at least one of an auditory stimulus, a verbal stimulus and a somatosensory stimulus using the degree of sedation.

19. The method of claim 11 wherein the indication comprises a characteristic of the patient, a drug selecting from the list consisting essentially of Propofol, Etomidate, Barbiturates, Thiopental, Pentobarbital, Phenobarbital, Methohexital, Benzodiazepines, Midazolam, Diazepam, Lorazepam, Dexmedetomidine, Ketamine, Sevoflurane, Isoflurane, Desflurane, Remifenanil, Fentanyl, Sufentanil, Alfentanil, and drug administration information including at least one of drug timing, drug dose, drug administration rate, and target endpoint.

20. The method of claim 19, wherein the method further comprises guiding administration of the at least one drug having anesthetic properties to the target endpoint using the degree of sedation and the indication.