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Traumatic Brain Injury l: Introduction

Traumatic Brain Injury l: Introduction

DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...

Hemorrhagic Stroke ll: Pathophysiology

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A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...

Hemorrhagic Stroke l: Introduction

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A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...

Increased Intracranial Pressure ll: Pathophysiology

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Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...

Increased Intracranial Pressure l: Introduction

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Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...

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Updated: May 16, 2026

A Pediatric Concussion Model in Mice: Closed Head Injury with Long-Term Disorders (CHILD)

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Published on: February 7, 2025

Traumatic extradural hematoma in childhood.

Weiying Zhong¹, Xiutian Sima, Siqing Huang

¹Department of Neurosurgery, West China Hospital, Sichuan University, #37 Guo Xue Xiang, Chengdu 610041 Sichuan Province, People's Republic of China.

Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery

|December 15, 2012

Summary

Traumatic extradural hematoma (TEDH) in children often results in favorable outcomes, but initial neurological status and secondary brain edema significantly impact prognosis. Early diagnosis and surgical intervention are crucial for severe cases.

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Area of Science:

Pediatric Neurosurgery
Traumatic Brain Injury Research
Clinical Neurology

Background:

Traumatic extradural hematoma (TEDH) is a significant concern in pediatric head injuries.
Understanding the factors influencing clinical presentation and outcomes is vital for effective management.

Purpose of the Study:

To evaluate the clinical and radiological features of pediatric TEDH.
To identify factors affecting initial neurological status and patient outcomes.

Main Methods:

Retrospective review of medical records for 269 children with TEDH (2005-2012).
Univariate and multivariate analyses were employed to explore prognostic factors.

Main Results:

The majority of patients (85.5%) presented with a Glasgow Coma Scale (GCS) of 13-15.
Headache, vomiting, and altered consciousness were common symptoms; temporal and frontal regions were frequent hematoma locations.
A favorable outcome was observed in 97.4% of cases, with a low overall mortality rate of 1.1%.

Conclusions:

Initial neurological condition and secondary brain edema are key prognostic indicators.
Pupillary abnormalities, clinical progression, hematoma characteristics, and midline shift influenced initial neurological status.
Prompt diagnosis and surgical evacuation are essential for improving outcomes in massive TEDH cases.