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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Respiratory disturbance index ： ウィキペディア英語版 Respiratory disturbance index The respiratory disturbance index (RDI) — or respiratory distress Index — is a formula used in reporting polysomnography (sleep study) findings. Like the apnea-hypopnea index (AHI), it reports on respiratory events during sleep, but unlike the AHI, it also includes respiratory-effort related arousals (RERAs).〔Richardson, Mark A., & Friedman, Norman R. (Eds.) (2007). ''Clinician's Guide to Pediatric Sleep Disorders'', p. 75. New York: Informa Healthcare USA, Inc.〕 RERAs are arousals from sleep that do not technically meet the definitions of apneas or hypopneas, but do disrupt sleep. They are abrupt transitions from a deeper stage of sleep to a shallower. A RERA is characterized by increasing respiratory effort (and thus decreasing esophageal pressures) for 10 seconds or more leading to an arousal from sleep, but one that does not fulfill the criteria for a hypopnea or apnea.〔(【引用サイトリンク】title=Sleep-Disordered Breathing )〕 The gold standard for measuring RERAs is esophageal manometry, as recommended by the American Academy of Sleep Medicine (AASM). However, esophageal manometry is uncomfortable for patients and impractical to use in most sleep centers. Some research studies have found that a high RDI was significantly correlated with excessive daytime sleepiness, and that this correlation was stronger than that for the frequency of oxygen saturation decreases below 85%, but other studies have found only a weak correlation.〔(Verster, Joris C., et al. (Eds.) (2008). ''Sleep and Quality of Life in Clinical Medicine'', p. 83. Totowa, New Jersey: Humana Press. )〕 ==Formula== RDI = (RERAs + Hypopneas + apneas) X 60 / TST (in minutes). That is, RDI means the average number of episodes of apnea, hypopnea, and respiratory event-related arousal per hour of sleep.〔(Espiritu, Joseph Roland D. (2008). "Sleep-Related Breathing Disorders". In Schmitz, Paul G. (Ed.), ''Internal Medicine: Just the Facts'', p. 663. McGraw-Hill Medical. )〕 (TST is "total sleep time".) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Respiratory disturbance index」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.