case2 Flashcards
complication of acute pyogenic meningitis
brain abscess=> inc. ICP
phlebitis=>hemorrhagic infarction
consequence events of cerebral edema ?
1- ischemia 2- necrosis 3-cytotoxic edema 4- heniation 5- increase edema
what are the gross picture of brain edema ?
1- soft + over filled
2- gyri flattened
3-intervening sulcus compressed
4- ventricular cavity compressed
the difference between vasogeneic edema and cytotoxic edema in BBB and glial cells ?
vasogenic edema : accure when integrity of normal BBB is interupted
cytotoxic edema : accures 2ry to neuronal and glial cell injury
example in vasogenic edema ?
tumer , inflammation
example in cytotoxic edema ?
hypoxic ischemia , exposure to toxins
explain what is “false localizing sign”?
when transtentorial herniation large enoph
this will lead to herniation of the contralateral side of cerebral penduncle
which contain large number of motor and sensory nerves
this will lead to contralateral hemiplasion in the ipsilateral side of herniation
“kernahan’s noch” => is deformation created in result of compressed peduncle
the most imp. clinical picture of edema is ?
herniation
when transtentorial herniation accompined by hemorrhage in midbrain and pons called
“Duret hemorrhage”
why tonsillar herniation is life threating ?
because it will effect the center respiration and hear in medulla
structures pass through caverous sinus
internal carotid artery, abducent nerve
structures pass to lat wall of carvernous sinus ?
trochlear nerve IV ,
aculomotor nerve III ,
Opthalmic nerve
maxillary nerve
all the cranial nerve attcheceh tothe brain stem atteched from it’s anterior suface excpt
trochlear cranial nerve from posterior surfece of brain stem just belo to inferior coliculus
