Oximetry system for detecting ventilation instability
First Claim
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1. A patient monitoring system for detecting ventilation instability comprising:
- a pulse oximeter for repeatedly determining an arterial oxygen saturation value to generate a time series output of said arterial oxygen saturation values; and
a processor programmed to detect the occurrence of a cluster of declines in said values and to provide an output in response to the detection of said occurrence.
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Abstract
A system for detecting ventilation instability includes a pulse oximeter for generating a time series of oxygen saturation values and a processor programmed to detect the occurrence of patterns along the time series of clustered variations indicative of ventilation instability. An output is provided in response to the detection of the occurrence.
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Citations
59 Claims
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1. A patient monitoring system for detecting ventilation instability comprising:
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a pulse oximeter for repeatedly determining an arterial oxygen saturation value to generate a time series output of said arterial oxygen saturation values; and
a processor programmed to detect the occurrence of a cluster of declines in said values and to provide an output in response to the detection of said occurrence. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A patient monitoring system for detecting ventilation instability comprising:
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a pulse oximeter for repeatedly determining an arterial oxygen saturation value to generate a time series output of said arterial oxygen saturation values; and
a processor programmed to detect at least one occurrence of at least one pattern of said values along said time series, said pattern being indicative of ventilation instability, said pattern including at least a plurality of declines in said values along said time series during a time period less than said time series, said processor being further programmed to provide an output in response to said detection of said occurrence. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A processing method for providing an automatic indication of ventilation instability of a patient using a pulse oximeter, said pulse oximeter connected with said patient and a processor programmed to detect declines in oxygen saturation values, the method including:
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(a) repeatedly determining an arterial oxygen saturation value of said patient to generate a time series output of said arterial oxygen saturation values;
(b) detecting an occurrence of at least a plurality of closely spaced declines in said values; and
(c) providing an output in response to said detecting. - View Dependent Claims (14, 15, 16, 17)
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18. A method for providing an indication of ventilation instability of a patient using a processor and a pulse oximeter, said pulse oximeter connected with said patient, the method including:
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(a) repeatedly determining the arterial oxygen saturation value of said patient to generate a time series output of said oxygen saturation values; and
(b) using said processor, detecting an occurrence of at least a plurality declines in said values wherein at least two of said declines occur within a pre-selected interval; and
(c) providing an output in response to said detecting. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A patient monitoring system for detecting ventilation instability comprising:
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a monitor for generating a time series of a oxygen saturation values and for determining a variation along said time series indicative of an occurrence of at least one of an apnea and a hypopnea, and, a processor programmed to detect an occurrence of a cluster of said variations and to provide an output in response to detection of said occurrence. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A microprocessor system for the evaluation of a patient, the system programmed to:
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(a) produce at least one time series of oxygen saturation values, (b) identify along said time series, a pattern indicative of the occurrence of at least one of a plurality of closely spaced apneas and a plurality of closely spaced hypopneas, and (c) output an indication based on said occurrence.
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32. A microprocessor system for the evaluation of a patient, the system programmed to:
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(a) produce at least one time series of at least arterial oxygen saturation, (b) identify along said time series, a pattern indicative of the occurrence of a plurality of closely spaced falls in oxygen saturation, and (c) output an indication based on said occurrence. - View Dependent Claims (33, 34, 35)
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36. A patient monitoring system for detecting ventilation instability comprising:
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a pulse oximeter for repeatedly determining an arterial oxygen saturation value to generate a time series output of said arterial oxygen saturation values; and
a processor programmed to recognize the occurrence of a cluster of declines in said values and to provide an output in response to the recognition of said occurrence. - View Dependent Claims (37, 38)
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39. A patient monitoring system for detecting ventilation instability comprising:
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a pulse oximeter for repeatedly determining an arterial oxygen saturation value to generate a time series output of said arterial oxygen saturation values; and
a processor programmed to recognize at least one occurrence of at least one pattern of said values along said time series, said pattern being indicative of ventilation instability, said pattern comprising at least a plurality of declines in said values occurring over a short time interval along said time series, said processor being further programmed to provide an output in response to said recognition of said occurrence. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46)
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47. A method for providing automatic indication of ventilation instability of a patient promptly upon an occurrence of said ventilation instability using a processor and a pulse oximeter without the need for attendance by a person, said pulse oximeter connected with said patient, the method including:
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(a) repeatedly determining an arterial oxygen saturation value of said patient to generate a time series output of said arterial oxygen saturation values; and
(b) using said processor, recognizing an occurrence of at least a plurality of declines in said values, wherein at least two of said declines occur within a preselected interval; and
(c) providing an automatic output in response to said recognizing. - View Dependent Claims (48, 49, 50, 51, 52, 53)
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54. A patient monitoring system for automatically detecting ventilation instability without need for attendance by a person comprising:
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a pulse oximeter for repeatedly determining an arterial oxygen saturation value to generate a time series output of said arterial oxygen saturation values; and
a processor programmed to automatically identify as abnormal an occurrence of at least one of a plurality of closely-spaced declines and a plurality of closely-spaced rises in said values, wherein said occurrence occurs over a short time interval, and to provide an automatic output in response to said identification, said output including a rapid response to said identification so that patient treatment can be quickly adjusted in response to said occurrence. - View Dependent Claims (55, 56, 57, 58, 59)
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Specification