Early detection of upper airway obstructions by analysis of acoustical respiratory input impedance

Repetitive occurrence of partial or total upper airway obstruction characterizes several respiratory dysfunctions such as the obstructive sleep apnea syndrome (OSAS). In OSAS patients, pharyngeal collapses are linked to a decrease in upper airway muscle activity during sleep which causes decreased upper airway wall stiness. Continuous positive airway pressure (CPAP) is recommended as the treatment of choice. Advancements in CPAP therapy require early detection of respiratory events in real time to adapt the level of the applied pressure to airway collapsibility. The forced oscillation technique (FOT) is a noninvasive method which re

• Type: Journal
• Year: 1999
• Where: BC
• Authors: S. Reisch, Holger Steltner, Jens Timmer, C. Renotte, Josef Guttmann
• Keywords: BC 1999, Upper Airway, Upper Airway Obstruction, Upper Airway Wall