title: OPTISAS a new method to analyse patients with Sleep Apnea Syndrome.
abstract: OPTISAS is a visualization method that allows describing very precisely a patient with Sleep Apnea Syndrome. Using the events scored by the physician, our method gives a set of graphs that are a detailed representation of the condition, sleep stage and position, in which the events occur. This helps for the diagnosis. This is possible thanks to the application of Generalized Caseview method. The method proceeds in two steps, defining the reference frame and using this reference frame to visualize data. The reference frame is built by using a supin/unsupine binary criterion, a six type event criterion and a sleep stage ordinal criterion. The main result is the visualization of the indexes (average number of events by hour) associated with the events. This allows a more accurate diagnosis showing the precise influence of the position and of the sleep stage on the events.
authors.affiliation: Hôpital Tenon (Assistance Publique Hôpitaux de Paris), France.
authors.forename: Adrien
authors.initials: A
authors.lastname: Ugon
authors.forename: Carole
authors.initials: C
authors.lastname: Philippe
authors.forename: Slawomir
authors.initials: S
authors.lastname: Pietrasz
authors.forename: Jean-Gabriel
authors.initials: JG
authors.lastname: Ganascia
authors.forename: Pierre P
authors.initials: PP
authors.lastname: Levy
mesh_terms: D003196:Computer Graphics; D003625:Data Collection; D003626:Data Display; D003936:Diagnosis, Computer-Assisted; D005103:Expert Systems; D006801:Humans; D008491:Medical Informatics Applications; D016347:Medical Records Systems, Computerized; D017286:Polysomnography; D012815:Signal Processing, Computer-Assisted; D012891:Sleep Apnea Syndromes / Q000175:diagnosis*; D012984:Software