Apparatus and method for detection of one lung intubation by monitoring sounds
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Abstract
A method and a device for the acoustic detection of a one lung intubation situation in a human subject are disclosed. According to some embodiments, the disclosed method includes computing an autoregressive moving average (ARMA) or an autoregressive function of electrical signals received from acoustic detectors placed at different locations on the body of the subject. Appropriate locations for acoustic detectors include the back region and the chest region. The disclosed method and apparatus are insensitive to uncancelled, random background noise with a loudness associated with an operating room or intensive care ward. The disclosed device is configurable so that the relative occurrence rate of missed detections or false negatives and false positive alarms can be modified. In one exemplary embodiment, the device is adapted such that at most 9% of identifications are false positive identifications, and at most 2% of identifications are false negative identifications.
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Citations
66 Claims
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1-33. -33. (canceled)
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34. ) A method of detecting a one lung ventilation situation in a human subject, the method comprising:
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a) electronically detecting indigenous lung sounds emanating from a region of the body with an acoustic sensors; and b) generating an output indicative of the one lung ventilation situation by processing said detected indigenous lung sounds. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. ) A method of detecting a one lung ventilation situation in a human subject, the method comprising:
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a) electronically detecting noise including indigenous lung sounds emanating from a region of the body; and b) generating an output indicative of the one lung ventilation situation by processing said detected indigenous lung sounds in way that is insensitive to uncancelled, random background noise of a loudness associated with an operating room. - View Dependent Claims (58, 59)
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60. ) A method comprising:
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a) selecting a population of human subjects sufficiently large to give statistically significant results; and b) identifying a one lung intubation situation in a subpopulation of said population, wherein at most 9.6% of said identifications are misidentifications.
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61. ) A method comprising:
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a) selecting a population of human subjects sufficiently large to give statistically significant results; and b) identifying a one lung intubation situation in a subpopulation of said population, wherein at most 4.8% of said identifications are false positive identifications, and at most 4.8% of said identifications are false negative identifications.
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62. ) A method comprising:
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a) selecting a population of human subjects sufficiently large to give statistically significant results; and b) identifying a one lung intubation situation in a subpopulation of said population, wherein at most 9% of said identifications are false positive identifications, and at most 2% of said identifications are false negative identifications.
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63. ) A device for detecting a one lung ventilation situation in a subject, the device comprising:
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a) a plurality of acoustic sensors adapted to electronically detect indigenous lung sounds emanating from a region of the body; and b) a processing unit adapted to process an electronic signal received from said acoustic sensors and to generate an output indicative of a one lung ventilation situation. - View Dependent Claims (64, 65, 66)
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Specification