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Traumatic brain injury-associated delayed sleep phase syndrome
J E Nagtegaal1, G A Kerkhof, M G Smits
1Department of Clinical Pharmacy, Hospital de Gelderse Vallei, Bennekom, The Netherlands.
Functional Neurology
|March 21, 1998
Summary
Traumatic brain injury can cause delayed sleep phase syndrome (DSPS), disrupting sleep-wake rhythms. Melatonin treatment normalized these rhythms, suggesting a link and potential therapeutic approach for brain injury patients.
Area of Science:
- Neuroscience
- Sleep Medicine
- Chronobiology
Background:
- Traumatic brain injury (TBI) can lead to various neurological and physiological dysfunctions.
- Sleep disturbances are common sequelae of TBI, but specific circadian rhythm disruptions are less understood.
- Delayed Sleep Phase Syndrome (DSPS) is a circadian rhythm disorder characterized by a significant delay in sleep onset and wake times.
Observation:
- A 15-year-old female patient presented with a pronounced DSPS after sustaining a TBI.
- Physiological markers of the sleep-wake cycle, including plasma melatonin levels, core body temperature, wrist activity, and electroencephalogram (EEG)-measured sleep architecture, were assessed.
- These markers exhibited a delay of approximately 12 hours, indicating a significant disruption in the patient's circadian rhythm.
Findings:
- The study observed a strong association between TBI and the development of DSPS.
- Treatment with 5 mg of melatonin effectively normalized the delayed physiological markers and sleep-wake rhythm.
- This suggests that TBI can directly impact the brain's circadian regulatory mechanisms.
Implications:
- This case highlights a potential, previously underrecognized consequence of TBI.
- Early recognition of DSPS in TBI patients may lead to improved diagnostic and therapeutic strategies.
- Understanding the link between TBI and circadian disruption could enhance patient recovery and quality of life.