AI Article Synopsis
- Excessive jaw muscle activity, often linked to bruxism, is a common issue in patients following an acquired brain injury (ABI).
- A study involving 14 severe ABI patients tracked jaw muscle activity over two periods to see if there was a change over time and if it related to their altered state of consciousness.
- Results showed that most patients experienced high levels of jaw muscle activity that didn't significantly change after four weeks, and there were no clear links to their level of consciousness, indicating a need for further research in this area.
Article Abstract
Background: Excessive jaw muscle activity is a frequent complication after acquired brain injury (ABI).
Objective: The study aimed to identify the occurrence and severity of jaw muscle activity and its association with altered state of consciousness in patients with ABI.
Methods: A total of 14 severe ABI patients with varied altered state of consciousness were recruited. A single-channel electromyographic (EMG) device was used to assess the jaw muscle activity for three consecutive nights during Week 1 and Week 4 following admission. Differences in number of EMG episodes/h between Week 1 and 4 were analysed using non-parametric tests and association between the EMG activity and altered state of consciousness were analysed using Spearman's correlation test.
Results: Nine of fourteen (64%) patients showed indications of bruxism (cutoff: >15 EMG episodes/h). The average EMG episodes/h at admission were 44.5 ± 13.6 with no significant changes after Week 4 of admission (43 ± 12.9; p = .917). The EMG episodes/h ranged from 2 to 184 during Week 1 and 4-154 during Week 4. There were no significant correlations between the number of EMG episodes/h during the three nights and the individuals altered state of consciousness during Week 1 and Week 4.
Conclusion: Patients with ABI had a conspicuously high but variable level of jaw muscle activity at admission and it tend to remain high after 4 week of hospitalisation which could potentially lead to adverse effects such as excessive tooth wear, headaches and pain in jaw muscles. The lack of associations between individuals altered level of consciousness and EMG activity could be due to low sample size and further studies are clearly warranted in this patient group with special needs. Single-channel EMG devices can record jaw muscle activity early in the hospitalisation period and might be a helpful tools for early detection of bruxism in ABI patients.
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| http://dx.doi.org/10.1111/joor.13540 | DOI Listing |
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