http://www.neurology.org/content/early/2016/04/27/WNL.0000000000002697
- Lukas L. Imbach, MD*,
- Fabian Büchele, MD*,
- Philipp O. Valko, MD,
- Tongzhou Li,
- Angelina Maric, MSc,
- John F. Stover, MD,
- Claudio L. Bassetti, MD,
- Ladislav Mica, MD,
- Esther Werth, PhD and
- Christian R. Baumann, MD
- Correspondence to Dr. Imbach: lukas.imbach@usz.ch
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10.1212/WNL.0000000000002697Neurology
- Abstract
- Full Text (PDF)
- Also available:
- Accompanying Editorial
Abstract
Objective: This study is a prospective, controlled clinical and electrophysiologic trial examining the chronic course of posttraumatic
sleep–wake disturbances (SWD).
Methods: We screened
140 patients with acute, first-ever traumatic brain injury of any
severity and included 60 patients for prospective
follow-up examinations. Patients with prior
brain trauma, other neurologic or systemic disease, drug abuse, or
psychiatric
comorbidities were excluded. Eighteen months
after trauma, we performed detailed sleep assessment in 31 participants.
As a
control group, we enrolled healthy individuals
without prior brain trauma matched for age, sex, and sleep satiation.
Results: In the chronic state after traumatic brain
injury, sleep need per 24 hours was persistently increased in trauma
patients
(8.1 ± 0.5 hours) as compared to healthy
controls (7.1 ± 0.7 hours). The prevalence of chronic objective
excessive daytime
sleepiness was 67% in patients with brain trauma
compared to 19% in controls. Patients significantly underestimated
excessive
daytime sleepiness and sleep need, emphasizing
the unreliability of self-assessments on SWD in trauma patients.
Conclusions: This
study provides prospective, controlled, and objective evidence for
chronic persistence of posttraumatic SWD, which remain
underestimated by patients. These results have
clinical and medicolegal implications given that SWD can exacerbate
other outcomes
of traumatic brain injury, impair quality of
life, and are associated with public safety hazards.
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