Epidural Hematoma

An epidural hematoma is a collection of blood between the dura mater and the calva. In the supratentorial space, it most often arises on the basis of arterial bleeding, and most often by bleeding from the medial meningeal artery. In the infratentorial region, venous sinuses tend to be the source of bleeding. Over the age of 60 it occurs rather rarely, because the dura mater adheres tightly to the bone.

Clinical picture

• Small – asymptomatic;
• bearing symptoms of a progressive nature;
• disorders of consciousness;
• anisocoria = the result of compression of the oculomotor nerve as an initial symptom of temporal herniation (mydriasis is on the side of the hematoma in 85%);
• hemiparesis (on the opposite side to the hematoma);
• craniocaudal deterioration;
• a third of patients have a so-called lucid interval - after the injury, consciousness is first preserved, and only then do symptoms begin to appear;

Layers of the brain

Epidural hematoma on the left

• typical course - after the injury there is unconsciousness (due to brain coma), then awakening to consciousness (the so-called lucid interval) and then a rapidly deteriorating state of consciousness ending in death (this time due to hematoma oppression);
  • only about 15-20% of epidural hematomas have such a course,
  • in about a fifth of cases, the injury may not cause unconsciousness (the patient may have the feeling of a hot liquid being spilled in the head),
  • or, on the contrary, the injury is more severe and there is no lucid interval at all,
  • the entire process can be obscured by the effect of alcohol,
  • warning symptoms - hemiparesis - contralateral (by compression of the cortex), later also ipsilateral (compression of the bilateral pyramidal pathway against the tentorium),
    • anisocoria – ipsilateral mydriasis is caused by compression of N. III at the crossing with a. cerebri post.,
    • with a hematoma in the posterior cranial fossa, a warning symptom is a change in breathing, often while still conscious.

Diagnosis

• CT – biconvex hyperdense mass in the calf, often at the site of a skull fracture.

Treatment

• Neurosurgical removal of hematoma and artery ligation, venous bleeding can be treated conservatively under CT monitoring,
  • this is a life-saving procedure, in the case of an acute course, it cannot be delayed or delayed by longer transport!
  • must be performed regardless of the patient's condition.
  • as a rule, we make a temporal drill and then split the bone or perform a craniotomy.
  • sometimes we have to go all the way to the foramen spinosum and plug it.
  • due to recurrences, we sew the dura to the periosteum.

Links

Related Articles

• Craniocerebral trauma
• Acute subdural hematoma
• Subdural hematoma
• Subarachnoid hemorrhage
• Chronic subdural hematoma

Source

• BENEŠ, Jiří. study materials [online]. ©2010. [cit. 2009]. <http://jirben.wz.cz>.

External links

• epidural hematoma, stefajir.cz

Literature

• NEVŠÍMALOVÁ, Soňa – RŮŽIČKA, Evžen – TICHÝ, Jiří. Neurology. 1. edition. Praha : Galén, 2005. pp. 163-170. ISBN 80-7262-160-2.

• AMBLER, Zdeněk. Základy neurologie. 6. edition. Praha : Galén, 2006. pp. 171-181. ISBN 80-7262-433-4.

• ZEMAN, Miroslav, et al. Speciální chirurgie. 2. edition. Praha : Galén, 2004. 575 pp. ISBN 80-7262-260-9.