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Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury
Published on: August 14, 2019
Factors influencing the development of infantile traumatic brain injury with a biphasic clinical course and late
Madoka Yasukohchi1, Taku Omata1, Kenta Ochiai1
1Department of Pediatrics, Tokyo Women's Medical University Yachiyo Medical Center, 477-96 Owadashinden, Yachiyo-shi, Chiba 276-8524, Japan.
Insights
Severe infantile traumatic brain injury (TBI) may lead to a biphasic course with late reduced diffusion (TBIRD). Prolonged seizures, intubation, and CT brain lesions indicate TBIRD risk, with the Tada score aiding prediction.
Area of Science:
- Pediatric Neurology
- Neuroimaging
- Trauma Surgery
Background:
- Infantile traumatic brain injury (TBI) can present with a biphasic clinical course and late reduced diffusion, termed TBIRD.
- Identifying pediatric TBI patients who develop TBIRD remains challenging.
Purpose of the Study:
- To identify clinical and neuroimaging factors associated with the development of TBIRD in pediatric patients.
- To evaluate the utility of the Tada score in predicting TBIRD.
Main Methods:
- Retrospective study of pediatric TBI patients who underwent MRI.
- Diagnosis of TBIRD based on clinical presentation (convulsions/consciousness disturbance) and late-onset subcortical reduced diffusion ('bright tree appearance').
- Comparison of clinical features, neuroimaging (CT/MRI), laboratory data, and Tada score between TBIRD and non-TBIRD groups. Neurological prognosis assessed via Pediatric Cerebral Performance Category scale.
Main Results:
- Seven out of 21 patients were diagnosed with TBIRD (median age 8 months).
- Factors associated with TBIRD included seizures >30 min (5/7), tracheal intubation (5/7), and CT brain parenchymal lesions (3/7).
- The Tada score was significantly more positive in TBIRD patients (6/7) compared to non-TBIRD patients (0/14).
Conclusions:
- Infants with severe TBI require close monitoring for TBIRD development.
- The Tada score shows promise as a predictive tool for identifying patients at risk of TBIRD.
Background:
Infantile traumatic brain injury (TBI) with a biphasic clinical course and late reduced diffusion (TBIRD) has been reported as a type of TBI. However, it remains uncertain which pediatric patients with TBI develop TBIRD.
Methods:
Patients with TBI who were admitted to our hospital and underwent magnetic resonance imaging (MRI) between December 2006 and October 2022 were included in this study. A diagnosis of TBIRD was made in patients with or suspected TBI, with initial symptoms being convulsions or disturbance of consciousness and late-onset subcortical reduced diffusion, the so-called bright tree appearance. Clinical features, neuroimaging (computed tomography (CT) and MRI) findings, laboratory data, and Tada score were retrospectively compared between TBIRD and non-TBIRD patients. Neurological prognosis was assessed using the Pediatric Cerebral Performance Category scale.
Results:
Of 21 patients who met the inclusion criteria, a diagnosis of TBIRD was made in 7 patients (median age: 8 months). The factors contributing to TBIRD development were seizures lasting over 30 min as the initial symptom (5/7 in TBIRD vs. 0/14 in non-TBIRD), tracheal intubation during initial treatment (5/7 vs. 0/14), and brain parenchymal lesions on CT (3/7 vs. 0/14), suggesting that severe TBI may progress to TBIRD. The Tada score was more positive in patients with TBIRD (6/7) than in those without (0/14).
Conclusions:
It is important to monitor infant patients with severe TBI for the development of TBIRD. The Tada score can be a useful tool for TBIRD prediction.
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