Monitoring the occurrence of apneic and hypopneic arousals
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United States of America Patent
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Jul 18, 2000
Grant Date -
N/A
app pub date -
Dec 22, 1997
filing date -
Apr 11, 1995
priority date (Note) -
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Abstract
The occurrence of an arousal in a patient associated with an apneic or hypopneic episode can be determined. Sensors are placed on a patient to obtain signals representative of at least two physiological variables, for example skin conductance, heart rate, and blood oxygen concentration. The signals are conditioned by conditioning circuitry, then processed by a processor to correlate at least two thereof. A coincident change in at least two of the processed signals is indicative of the occurrence of an arousal, that in turn indicates an apneic or hypopneic episode has occurred. A patient thus can be diagnosed as suffering conditions such as obstructive sleep apnea.
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