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oahe

PURPOSE ^

OAHE detectes obstructive Apnea/Hypopnea event

SYNOPSIS ^

function [Y0,EVENT] = OAHE(S,Fs)

DESCRIPTION ^

 OAHE detectes obstructive Apnea/Hypopnea event

    [Y,EVENT] = OAHE(X,Fs)
    [Y,EVENT] = OAHE(filename,CHAN)

 INPUT:
       X   respiratory channel
       Fs  sampleing rate
       filename        source filename 
       CHAN            respiratory channels for calculating OAHE

 OUTPUT: 
       Y       detection trace
       EVENT   event structure as used in BIOSIG  

 The following commands store the events in an EVENT-file, which can
 be visualized with SVIEWER
       HDR.FileName = 'filename.evt';
       HDR.EVENT = EVENT; 
       HDR.TYPE = 'EVENT'
       HDR=sopen(HDR,'w'); HDR=sclose(HDR);
  

 see also: SVIEWER, SLOAD


 REFERENCES:
 [1] AASM Task Force. Sleep-Related Breathing Disorders in Adults:
       Recommendations for Syndrome Definition, and Measurement Techniques in Clinical Research. Sleep, 22(5), 1999.
 [2] Meoli AL, Casey KR, Clark RW, Coleman JA Jr, Fayle RW, Troell RJ, Iber C; Clinical Practice Review Committee.
       Hypopnea in Sleep-Disordered Breathing in Adults. Sleep. 2001 Jun 15;24(4):469-70.
 [3] Penzel T.,  Brandenburg U., Fischer J., Jobert M., Kurella B., Mayer G., Nioewerth H.J., Peter J.H., Pollm�her T., Sch�er T., Steinberg R., Trowitzsch E., Warmuth R., Wee�H.-G., W�k C., Zulley J.,
       Empfehlungen zur computerunterst�zen Aufzeichnung und Auswertung von Polygraphien. Somnologie, 2, 42-48, 1998.
 [4] Ross SD, Sheinhait IA, Harrison KJ, Kvasz M, Connelly JE, Shea SA, Allen IE.
       Systematic review and meta-analysis of the literature regarding the diagnosis of sleep apnea. Sleep. 2000 Jun 15;23(4):519-32.
 [5] Schafer T. Methodik der Atmungsmessung im Schlaf: Kapneographie zur Beurteilung der Ventilation.
       Biomed Tech (Berl). 2003 Jun; 48(6):170-5.
 [6] Thurnheer R, Xie X, Bloch KE. Accuracy of nasal cannula pressure recordings for assessment of ventilation during sleep.
       Am J Respir Crit Care Med. 2001 Nov 15;164(10 Pt 1):1914-9.
 [7] Whitney CW, Gottlieb DJ, Redline S, Norman RG, Dodge RR, Shahar E, Surovec S, Nieto FJ.
       Reliability of scoring respiratory disturbance indices and sleep staging. Sleep. 1998 Nov 1;21(7):749-57.
 [8] Schl�l A, Kemp B, Penzel T, Kunz D, Himanen SL, Varri A, Dorffner G, Pfurtscheller
       G. Quality control of polysomnographic sleep data by histogram and entropy analysis.
       Clin Neurophysiol. 1999 Dec;110(12):2165-70.

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:
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