Subdural hematoma

Subdural hematoma Subdural hematoma is a collection of blood found in the subdural space between the dura and arachnoid. The cause of this blood collection is generally an injury to the sagittal direction. Source veins rupture hemorrhage is represented by corresponding longitudinal sinus or cortical veins and is rarely a source of bleeding cortical artery. Blood collection is often limited by a fibrous capsule, which binds to brain tissue. The collection is sometimes stretched over the entire surface of the cerebral hemispheres. Bilateral hematomas are rare, they appear in severe trauma or multiple points of impact in the skull. Posterior fossa subdural hematoma is very rare for.
Subdural hematoma
Classification subdural hematoma - Acute subdural hematoma. These hematomas are clinically manifested in the first three days of injury. Content can be made of soft consistency clots, brittle. Blood is liquid in small quantity. - Subacute subdural hematomas. These types are clinically manifested between 3 days and 21 days after injury. Their content is the gelatinous clots, with a greater amount of liquid blood. Peripherals such hematomas is bordered by a fibrinous membrane. - Chronic subdural hematoma. These occur beyond 3 weeks of injury case. Are defined by a conjunctive capsule. Content is made up of spilled blood. Which delineates the hematoma capsule form in the first 8-12 hours after injury and are organized in about 3-4 weeks total. The capsule consists of two components: the capsule capsule parietal and visceral located juxtadural juxtaarahnoidian located. In the initial phase is represented by the contents of the hematoma as blood and blood to get an advanced look xantocrom. From anatomical point of view, the formation of these collections can be explained by bleeding from a cerebral contusion area dilacerare or a hematoma or rupture intraparenchimatos flowing into the cerebral cortex and subdural space.
Clinical It depends on the severity and intensity of trauma and cerebral lesions. In the immediate phase after head trauma, the patient loses consciousness. During this time, neurological deficits occur: controlled-or ipsilateral motor deficits, localized or generalized seizures, pupillary changes, cranial nerve III paresis, aphasia and headache. Remission is very short interval, a few hours, accompanied by headache, dizziness and impaired general condition. Period of worsening symptoms manifested by profound alteration of consciousness, coma and severe alteration of brainstem function, neurological focal signs (hemiparesis, hemiplegii controlaterale), eye signs that the same side as unilateral mydriasis hematoma (as a result of compression brainstem).
Subdural hematoma
Evolution and prognosis Subdural hematoma nevavorabila is developing in the absence of treatment, and prognosis is reserved if surgical intervention was not urgent.