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JOURNAL OF NEUROSURGICAL SCIENCES
A Journal on Neurosurgery
Indexed/Abstracted in: e-psyche, EMBASE, PubMed/MEDLINE, Neuroscience Citation Index, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,651
Journal of Neurosurgical Sciences 2015 Sep 09
Three time point view of mild brain injuries’ structural alteration and their association with cognitive domains
Munivenkatappa A. 1, Bhagavatula I. D. 2, Shukla D. P. 2, Rajeswaran J. 3 ✉
1 VRDL project, National Institute of Epidemiology (ICMR), Chennai, India;
2 Department of Neurosurgery, National Institute of Mental Health and Neurosciences, Bangalore, India;
3 Department of Clinical Psychology, National Institute of Mental Health and Neurosciences, Bangalore, India
AIM: Mild traumatic brain injury (mTBI) accounts for 70–80% of total neurotrauma, majority among them manifest with cognitive deficits. Till date there are few/or no 3time-point longitudinal studies that have evidenced brain volume changes. The current study has investigated volume changes at 3time-points and their association with cognitive sequel.
METHODS: Twenty-one mTBI patients with normal imaging and 15 GCS were recruited. Initially these patients were evaluated with magnetic resonance imaging (MRI) scan ≤36hours and neuropsychological test (NPT) during 2-3weeks after-injury. All the patients were available for follow-up for repeat MRI and NPT on 3-4 and 6-7months. The imaging and test scores were analyzed using repeated measures of analysis (p<0.05). The brain volumes were correlated with respective test-scores using partial-correlation.
RESULTS: Left frontal lobe(p<0.029) and thalamus(p=0.049) showed significant increase in mean volume overtime, whereas corpus callosum [mid-anterior(p=0.011) & central(p=0.04)] and left cerebellum(p=0.043) showed significant decrease in mean volume overtime. Clinically cognitive scores improved with time. Eventual improvements in attention and memory scores were positively associated with increase in cingulate gyrus volume.
CONCLUSION: The 3time-point longitudinal study illustrates brain areas that changes with time and their association with improving cognitive scores. The study provides hint about the pattern of natural recovery.