• Paola Proserpio, Andrea Lanza, Katrina Sambusida, Lara Fratticci, Pamela Frigerio, Maurizio Sommariva, Enrica Giuliana Stagni, Tiziana Redaelli, Fabrizio De Carli, and Lino Nobili.
• Centre of Sleep Medicine, Centre for Epilepsy Surgery "C. Munari", Niguarda Hospital, Milan, Italy.
• Sleep Med. 2015 Jan 1; 16 (1): 59-66.

BackgroundSleep disturbances are frequently reported by patients with spinal cord injury (SCI). Studies have shown an increased incidence of sleep-disordered breathing (SDB) and periodic leg movements during sleep (PLMS) in people with stable long-term SCI.MethodsThis was a prospective observational study in order to evaluate the features and possible predisposing factors of SDB and PLMS in a heterogenic population of consecutive SCI patients admitted at the Spinal Unit of the Niguarda Hospital within the first year after injury. Each patient underwent a clinical assessment, full polysomnography, and arterial blood gas analysis before and immediately after sleep. Multiple logistic regressions were applied in order to evaluate factors associated with SDB and PLMS.ResultsThirty-five (15 tetraplegic and 20 paraplegic) patients were enrolled. Nine patients (25.7%) had an obstructive SDB and 10 (28.6%) had PLMS. The frequency of SDB was higher in tetraplegic with respect to paraplegic patients (Wald statistic: 7.71; P = 0.0055), whereas PLMs were significantly more frequent in patients with an incomplete motor lesion than in subjects with a complete motor lesion (Wald statistic: 6.14; P = 0.013).ConclusionThis study confirms a high frequency of SDB and PLMS in SCI patients in the first year following injury. Independently from possible sub-acute and chronic clinical variables, the level and the completeness of the spinal cord lesion are the main factors associated respectively with an early development of SDB and PLMS.Copyright © 2014 Elsevier B.V. All rights reserved.

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