Case report –head injury and acute subdural haematoma
Transcript of Case report –head injury and acute subdural haematoma
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Case reportA 82-year-old man was suffered from sudden onset spasm of extremities then he fell down to the ground with loss of consciousness. He recovered his consciousness 7-8 mins later but his conscious became lethargy. GCS:E3M6V5. Left side extremities mild weakness was showed at that time.
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PE finding:Left side extremities mild weaknessNo traumatic woundNo bloody otorrhea, nor rhinorrhea
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Lab. dataCBC/DC : WBC :12.73
RBC : 3.83Hb : 10.9
生化 : non-specific finding
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Image findingBrain CT : large acute subdural hematoma is located at entire right vault, compresses the underlying right cerebral parenchyma, result in midline shift and subfalcine herniation.
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Brain CTBrain CT
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CTBrain CT
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Brain CTBrain CT
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Brain CTBrain CT
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Brain CTBrain CT
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Non-enhanced brain CT scan 1. Large high-density crescent- shaped, acute
subdural hematoma is located at entire right hemisphere, result in midline shift and subfalcine herniation.
2. Sub-arachniod hemorrhage fill the right sylvian fissure and along the inter-hemispheric fissure.
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PathologyRight subdural meninges : craniotomy
Grossly : blood clotsMicroscopy : blood clots
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Diagnosis BasisLarge high-density crescent- shaped is located at entire right hemisphere, result in midline shift and subfalcine herniation.
=> acute subdural hematoma
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Surgery and AutopsyCraniotomy with removal of SDH
After surgery : his conscious recovered , but disorientation in time and placed his four limbs are good, no more seizure.
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Differential diagnosisAcute subdural hematoma may be confused with acute epidural hematoma when the volume of the hematoma is large;
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however, the transition of the anterior and posterior margin of an acute subdural hematoma is smooth when compared with an epidural hematoma; no enhancement of the dura is seen in the inner margin of the hematoma by administration of contrast medium.
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Acute Subdural HematomaSDH locates in the interhemispheric fissureextravasations of blood between the dural and arachnoidal membranes; acute and chronic forms occur; chronic hematomas may become encapsulated by neomembranes.
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Acute SDHIn the severe acute form, both blood and cerebrospinal fluid enter the space as a result of laceration of the brain and a tear in the arachnoid, adding subdural compression to the direct injury to the brain.
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Chronic SDHIn the chronic form, only blood effuses into the subdural space as a result of rupture of the bridging veins, usually due to closed head injury. The effusion is a gradual process resulting, weeks after the injury, in headache and progressive focal signs that reflect the location of the mass.
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SDH risks includeHead injury Very young or very old age Anticoagulant medication (blood thinners) Chronic alcohol use
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SDHmost frequently the result of a head injury.They can occur spontaneously in the elderly, but this is less common. A CT scan or MRI scan will be done to evaluate for the presence of a subdural hematomawith strong mass effect, uncal/transtentorial herniation and subfalcial herniation:
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Signs and symptomsThe evaluation should include a complete neurologic exam.Signs of weakness, numbness, inabilty to speak, slurred speech, or abnormal level of consciousness will prompt the physicial to order a brain imaging study.
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Traumatic SDHTraumatic subdural hematomas are among the most lethal of all head injuries15% of all head traumasTraumatic acute subdural hematomas carry the highest risk to the patient, with a mortality rate of greater than 50% in most studies
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ComplicationsTemporary of permanent weakness, numbness, difficulty speaking Seizures Brain herniationPersistent symptoms such as memory loss, dizziness, headache, anxiety, and difficulty concentrating
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DiscussionTrauma of the head :1. Acute epidural hematoma2. Acute subdural haematoma3. Sub-arachnoid hemorrhage4. Intra-cerebral hemorrhage5. brain contusion
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Epidural haematomaA collection of blood that lies outside of the dura mater (between the dura mater and the skull)Biconvex high-density
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EDHEDH
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Subdural haematoma1. A collection of blood under the dura mater
adjacent to the brain2. Acute SDH is a surgical emergency
Acute stage: high density2-4weeks: iso-dense (with the brain tissue)3-4weeks later: lower densityMix-density: may be a flesh bleeding into a chronic lesion
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SDH
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Subarachnoid hemorrhageA acute condition involving sudden hemorrhage into the space between the arachnoid membrane and the pia mater
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Intracerebral hemorrhageFrom small arterioles within the brainThe frontal and temporal lobes are classic sitesHigh density
1. Traumatic ICH2. Spontaneous ICH
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ICHICH
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ICHICH
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ICHICH
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Brain contusionA head injury of sufficient force to bruise the brain. The bruising of the brain will often involve the surface of the brain and cause an extravasation of blood without rupture of the pia-arachnoid. Often associated with a concussion.
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Brain contusion
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Post-traumatic sequelae1. Cerebral infarction2. Cerebral atrophy3. Hydrocephalus4. Infection5. CSF fistula
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Reference1. Textbook of radiology and imaging. Seventh
edition,2003. David Sutton
2. Illustrated computer tomography. Edited by S. Takahashi. 1989
3. 2001 - 2003 Brain Injury.com4. www.crash.lshtm.ac.uk/ctscanlarge.htm