Passive constriction of the upper airway during central apneas: fiberoptic and EMG investigations
| Autor: | F. Blair Simmons, Nelson B. Powell, Christian Guilleminault, Michael H. Hill, Robert Riley, Riccardo Stoohs |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Adult
Male Pulmonary and Respiratory Medicine Central sleep apnea Physiology Central apnea Video Recording Constriction Sleep Apnea Syndromes medicine Fiber Optic Technology Humans Aged Genioglossus Central Sleep Apnea Syndrome Electromyography business.industry Pharynx Middle Aged medicine.disease Geniohyoid respiratory tract diseases Airway Obstruction medicine.anatomical_structure Anesthesia Airway business |
| Zdroj: | Respiration Physiology. 108:11-22 |
| ISSN: | 0034-5687 |
| DOI: | 10.1016/s0034-5687(97)02529-2 |
| Popis: | We studied five adult male patients with central sleep apnea syndrome (>75% of the monitored events being central) during sleep using a fiberoptic scope and EMG monitoring of the superior and middle constrictors of the pharynx and the genioglossus and geniohyoid muscles. The fiberoptic investigation revealed a spontaneous decrease in the size of the airway during central apneas, without negative intrathoracic pressure or activation of the superior and middle pharyngeal constrictor muscles. We found a mean maximum decrease of 71±7% in the cross-sectional area of the airway and an absence of superior-middle pharyngeal constrictor EMG discharge. We did not observe any complete collapses of the airway. |
| Databáze: | OpenAIRE |
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