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Incorporating Flow Limitation Into the Diagnosis and Quantification of Sleep Disordered Breathing

This study has been completed.
Information provided by:
National Center for Research Resources (NCRR) Identifier:
First received: February 12, 2000
Last updated: June 23, 2005
Last verified: January 2004

The diagnosis and treatment of sleep disordered breathing have come to the forefront of clinical medicine following recognition of the high prevalence and associated morbidity of sleep apnea. The effects on quality of life as well as societal costs have been well documented. The NYU Sleep Research Laboratory has spent the last several years working on the problem of improving the diagnosis of mild sleep disordered breathing which manifests as the upper airway resistance syndrome. Our approach has been to develop a non-invasive technique to detect increased upper airway resistance directly from analysis of the airflow signal. A characteristic intermittent change of the inspiratory flow contour, which is indicative of the occurrence of flow limitation, correlates well with increased airway resistance.

Currently all respiratory events are identified manually and totaled. This is time consuming and subject to variability. The objective of the present project is to improve upon the manual approach by implementing an artificially intelligent system for the identification and quantification of sleep disordered breathing based solely on non-invasive cardiopulmonary signals collected during a routine sleep study. The utility of other reported indices of sleep disordered breathing obtained during a sleep study will be evaluated.

Successful development of an automated system that can identify and classify upper airway resistance events will simplify, standardize and improve the diagnosis of sleep disordered breathing, and greatly facilitate research and clinical work in this area. Using a physiological based determination of disease should allow better assessment of treatment responses in mild disease.

Condition Intervention
Sleep-Disordered Breathing Procedure: Non-invasive technique to diagnose and quantitate sleep-disordered breathing

Study Type: Interventional
Study Design: Primary Purpose: Diagnostic

Further study details as provided by National Center for Research Resources (NCRR):


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with sleep disordered breathing
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Please refer to this study by its identifier: NCT00004569

United States, New York
NYU Sleep Disorders Center
New York, New York, United States, 10016
Sponsors and Collaborators
National Center for Research Resources (NCRR)
  More Information Identifier: NCT00004569     History of Changes
Other Study ID Numbers: NCRR-M01RR00096-0938
M01RR000096 ( U.S. NIH Grant/Contract )
Study First Received: February 12, 2000
Last Updated: June 23, 2005

Additional relevant MeSH terms:
Respiratory Aspiration
Respiration Disorders
Respiratory Tract Diseases
Pathologic Processes processed this record on September 21, 2017