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Case series investigating the cortical silent period after burns using transcranial magnetic stimulation

Garside, T., Wood, F.M. and Vallence, A-M (2018) Case series investigating the cortical silent period after burns using transcranial magnetic stimulation. Burns, 44 (5). pp. 1195-1202.

Link to Published Version: https://doi.org/10.1016/j.burns.2018.04.010
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Abstract

Objective

The study aimed to investigate intracortical inhibition following a burn injury, and to establish transcranial magnetic stimulation (TMS) as a useful and sensitive tool to investigate the cortical response to a burn injury.

Methods

Thirteen burn injured patients and 12 uninjured subjects underwent TMS to measure the cortical silent period (cSP), a marker of intracortical inhibition.

Results

In burn injury patients, cSP was similar in the burn-injured and less-injured arm (133 and 132 ms respectively; p = 0.96). cSP was numerically shorter in burns patients than control subjects, however, these differences were not statistically significant (133 vs 148 ms, p = 0.24). Subgroup analysis revealed cSP was shorter in the burn arm of patients compared to the uninjured control subjects in patients with upper-limb burn (cSP 120 ms vs 148 ms, p = 0.03), those with <10% TBSA (cSP 120 ms vs 148 ms, p = 0.01), those <2 years’ post-burn (cSP 110 ms vs 148 ms, p = 0.01), and patients with partial thickness burns (cSP 120 ms vs 148 ms, p = 0.02).

Conclusions

These results demonstrate significantly shorter cSP in the burned arm in patients with upper limb burn sustained <2 years ago, those with partial thickness burns, those with upper limb burns only, and those with burns of less than 10% TBSA. The results are consistent with the existing literature, which demonstrates a reduction in cSP duration in patients with a range of peripheral nerve injuries. There is a strong suggestion that cortical inhibition is altered following burn injury, and that TMS is a useful and sensitive method for investigating changes in cortical inhibition in burn patients.

Publication Type: Journal Article
Murdoch Affiliation: School of Psychology and Exercise Science
Publisher: Elsevier
Copyright: © 2018 Elsevier Ltd and ISBI.
URI: http://researchrepository.murdoch.edu.au/id/eprint/40997
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