Detecting and quantifying apnea using ventilatory cycle...

Details Detecting and quantifying apnea using ventilatory cycle... Detecting and quantifying apnea using ventilatory cycle...

2004-03-17

2008-08-19

Nasser, Jr., Robert L. (Department: 3735)

Surgery

Diagnostic testing

Respiratory

C600S538000, C600S484000

Reexamination Certificate

active

07413549

ABSTRACT:
Subject matter includes methods and devices for detecting and quantifying apnea. One exemplary implementation includes deriving a ventilation related parameter in real-time from a patient, deriving apneic intervals based on the parameter, distributing the apneic intervals as counts on a histogram, and calculating a single data point, such as a centroid, for clustered counts on the histogram. Centroids can be calculated at regular intervals and stored for lengthy periods, such as months, because they occupy very little storage space. A position of a centroid on the histogram can indicate an aspect of the patient's health and changes in the centroid positions over time can be used to detect trend changes in the patient's condition.

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