Sunday, January 03, 2016

Sleep following Traumatic Brain Injury - Its important!

Sleep in the Acute Phase 

of Severe Traumatic 

Brain Injury

Neurorehabilitation and Neural RepairDecember 26, 2015
By Francis Bernard, Helene Blais, Julie Carrier, Alex Desautels, Catherine Duclos, Marie Dumont, Danielle Gilbert, Nadia Gosselin, Catherine Hakes, David K Menon

Source:2014 Journal Citation Reports® (Thomson Reuters, 2015)

  1. Catherine Wiseman-Hakes, PhD1,2
  2. Catherine Duclos1,2
  3. Hélène Blais1
  4. Marie Dumont, PhD1,2
  5. Francis Bernard, MD1,2
  6. Alex Desautels, MD, PhD1,2
  7. David K. Menon, MD, PhD3
  8. Danielle Gilbert, MD1,2
  9. Julie Carrier, PhD1,2
  10. Nadia Gosselin, PhD1,2
  1. 1Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
  2. 2Université de Montréal, Montreal, Quebec, Canada
  3. 3University of Cambridge, Cambridge, UK
  1. Nadia Gosselin, Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur de Montréal, 5400 boul. Gouin Ouest, local E-0330, Montréal, Québec, Canada H4J 1C5. Email:nadia.gosselin{at}


Background and Objectives. The onset of pervasive sleep-wake disturbances associated with traumatic brain injury (TBI) is poorly understood. This study aimed to (a) determine the feasibility of using polysomnography in patients in the acute, hospitalized stage of severe TBI and (b) explore sleep quality and sleep architecture during this stage of recovery, compared to patients with other traumatic injuries. Methods. A cross-sectional case-control design was used. We examined the sleep of 7 patients with severe TBI (17-47 years; 20.3 ± 15.0 days postinjury) and 6 patients with orthopedic and/or spinal cord injuries (OSCI; 19-58 years; 16.9 ± 4.9 days postinjury). One night of ambulatory polysomnography was performed at bedside. 
Results. Compared to OSCI patients, TBI patients showed a significantly longer duration of nocturnal sleep and earlier nighttime sleep onset. 
Sleep efficiency was low and comparable in both groups. 
All sleep stages were observed in both groups with normal proportions according to age. 
Conclusion. Patients in the acute stage of severe TBI exhibit increased sleep duration and earlier sleep onset, suggesting that the injured brain enhances sleep need and/or decreases the ability to maintain wakefulness. As poor sleep efficiency could compromise brain recovery, further studies should investigate whether strategies known to optimize sleep in healthy individuals are efficacious in acute TBI. While there are several inherent challenges, polysomnography is a useful means of examining sleep in the early stage of recovery in patients with severe TBI.

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