If an extra-dural abscess be present, the intracranial cavity should not be explored at once unless this is absolutely necessary, but this step of the operation should be delayed for at least twenty-four hours.
If this be the case it means that, in addition to labyrinthine suppuration, there is presumably an extra-dural abscess of the posterior intracranial fossa, drainage of which is essential in order to obtain a recovery.
The dura mater is usually congested, but if an extra-dural abscess or lateral sinus thrombosis be present, it may be thickened and of a leathery appearance; or in the latter case almost gangrenous.
On exposure of the dura mater an extra-dural abscess may be met with, usually the result of internal-ear suppuration.
Thus, if the infection spreads upwards through the attic and tegmen tympani, it may lead to extra-dural abscess or to meningitis of the middle fossa, or to a temporo-sphenoidal abscess.
No harm is done in exposing these structures, and it precludes missing an extra-dural abscess.
The heart was found dilated, kidneys congested, stomach walls pink and covered in places with mucus and partly digested blood, and cerebral dural vessels dilated, but no clots were seen; bladder full.
The dural vessels of the brain were dilated; there was a clot on the dura over the fourth ventricle.
Post-mortem showed dural vessels of cord and brain full of blood.
Brain pale, some dural vessels well marked, no clots or hemorrhages.
Stomach pale; heart relaxed save left ventricle, which seemed contracted; dural vessels of the brain dilated; kidneys perhaps normal.
At autopsy the stomach and upper part of the small intestines showed hemorrhagic ecchymoses, with dilation of the dural vessels of the brain and cord, with a clot over a portion of the spinal cord.
The cerebral dural vessels were congested and the spinaldural vessels were well defined.
These sub-dural inoculations were the turning-point of Pasteur's discovery.
A small intra-dural hæmorrhage was still evident below the main lesion, not extensive enough to give rise to serious compression.
Mills-Roberts described to me one fatal case under his care in the Welsh Hospital in which extra-dural hæmorrhage was so abundant as, in his opinion, to have taken a prominent part in the production of the paralytic symptoms.
No evidence of either intra- or extra-dural hæmorrhage was detectible.
I saw the former both in the extra-dural and peri-pial forms, but never in sufficient quantity to exert a degree of pressure calculated to produce symptoms of total transverse lesion.
On opening the spinal canal the tunnel was found to be separated only by the compact tissue of the centrum from the cavity, while a thin extra-dural hæmorrhage separated the dura from the bones anteriorly.
In such cases traces of extra- or intra-dural hæmorrhage sometimes still persisted.
In meningeal and extra-dural tumours, however, in view of the hopeless prognosis if the condition is allowed to take its course, an attempt may be made to remove the tumour by operation.
The symptoms are similar to those of extra-dural abscess, but may be more severe; and it is seldom possible to distinguish between them before exposing the parts by operation.
In extra-dural hæmorrhage there is no blood in the cerebro-spinal fluid.
Extra-Dural Clot resulting from hæmorrhage from the Middle Meningeal Artery.
Lumbar puncture may aid in the differential diagnosis between extra-and intra-dural hæmorrhage, as blood is present in the fluid withdrawn in the latter, but not in the former.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "dural" in a variety of sentences. We hope that you will now be able to make sentences using this word.
