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Updated: Sep 28, 2026

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults
Published on: February 9, 2022
Identifying respiratory events and artifacts using oscillatory impedance measurement in aPAP therapy
R Harms1, B Graetz, B Schöller
1Weinmann Geräte für Medizin und Arbeitsschutz GmbH+Co., Hamburg. Reinhard.Harms@mcc-med.de
Abstract:
Constant positive airway pressure (cPAP) is the predominant noninvasive therapy for the obstructive sleep apnea syndrome (OSAS). The average pressure thereby applied can be reduced by online-identification of respiratory events. Oscillatory impedance measurement as an indicator for airway patency can identify central and obstructive apneas and hypopneas. Our goal was to reduce the sensors needed, to auto-calibrate the signals to each individual patient and to rule out patient induced artifacts.
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