title: The utility of respiratory inductance plethysmography in REM sleep scoring during multiple sleep latency testing.
abstract: Rapid eye movement sleep (REM) presents with a characteristic erratic breathing pattern. We investigated the feasibility of using respiration, derived from respiratory inductance plethysmography (RIP), in conjunction with chin electromyography, electrocardiography and pulse oximetry to facilitate the identification of REM sleep (RespREM) during nocturnal polysomnography (NPSG) and Multiple Sleep Latency Testing (MSLT). The Cohen's weighted kappa for the presence of REM and its duration in 20 consecutive NPSGs, using RespREM and compared to the current guidelines, ranged between 0.74-0.93 and 0.68-0.73 respectively for 5 scorers. The respective intraclass correlation coefficients were above 0.89. In 97.7% of the Sleep-Onset-REM-Periods (SOREMPs) during 41 consecutive MSLTs with preserved RIP, the RespREM was present and in 46.6% it coincided with the REM onset, while in the majority of the remainder RespREM preceded conventional REM onset. The erratic breathing pattern during REM, derived from RIP, is present and easily recognisable during SOREMPs in the MSLTs and may serve as a useful adjunctive measurement in identifying REM sleep.
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK. Electronic address: pandrakatos@gmail.com.
authors.forename: Panagis
authors.initials: P
authors.lastname: Drakatos
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK.
authors.forename: Sean
authors.initials: S
authors.lastname: Higgins
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK.
authors.forename: Iain
authors.initials: I
authors.lastname: Duncan
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK.
authors.forename: Kate
authors.initials: K
authors.lastname: Bridle
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK.
authors.forename: Sam
authors.initials: S
authors.lastname: Briscoe
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK; King's College London, UK.
authors.forename: Guy D
authors.initials: GD
authors.lastname: Leschziner
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK.
authors.forename: Brian D
authors.initials: BD
authors.lastname: Kent
authors.affiliation: Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, UK; King's College London, UK.
authors.forename: Adrian J
authors.initials: AJ
authors.lastname: Williams
mesh_terms: D000328:Adult; D004562:Electrocardiography; D004576:Electromyography; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D010092:Oximetry; D010991:Plethysmography / Q000379:methods; D017286:Polysomnography / Q000379:methods; D012119:Respiration; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000503:physiopathology; D012895:Sleep, REM / Q000502:physiology*
keywords: MSLT; REM; REM-related erratic breathing pattern; Respiratory inductance plethysmography; SOREMPs