title: A novel mainstream capnometer system for polysomnography integrated with measurement of nasal pressure and thermal airflow.
abstract: Capnometry is a method to measure carbon dioxide (CO(2)) in exhaled gas and its use during polysomnography (PSG) for diagnostic of sleep apnea-hypopnea syndrome is expanding. However, some problems exist for using capnometer in combination with other respiratory monitoring devices because capnometry requires additional sampling cannula or airway adapter attached to patients. To resolve these problems, we developed a novel mainstream capnometer system for PSG, which is designed to integrate multiple devices for measuring respiratory parameters. This system may provide comfortable and stable PSG including capnometry. We evaluated the basic performance of this system using a spontaneous breathing model. The result indicates that this newly developed system works adequately in PSG and moreover has superior characteristics of capnography signal and measurement stability against displacement of sensors, compared to conventional devices.
authors.forename: Kota
authors.initials: K
authors.lastname: Saeki
authors.forename: Yuya
authors.initials: Y
authors.lastname: Baba
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Takatori
authors.forename: Masayuki
authors.initials: M
authors.lastname: Inoue
authors.forename: Naoki
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Shinji
authors.initials: S
authors.lastname: Yamamori
mesh_terms: D000328:Adult; D000388:Air; D019296:Capnography / Q000295:instrumentation*; D006801:Humans; D008297:Male; D009055:Mouth; D009666:Nose / Q000502:physiology*; D017286:Polysomnography / Q000295:instrumentation*; D011312:Pressure; D012119:Respiration; D012212:Rheology / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted; D013696:Temperature; D013990:Tidal Volume