Transtentorial uncal heriniation causes all except:
Uncal/ Transtentorial Herniation- Uncus & Temporal lobes are forced through Cerebellar Tentorium- Sequential compression of I/L 3rd nerve followed by Brainstem followed by whole BrainstemEarly Signs - I/L Dilated PupilLate Signs- I/L Hemiplegia- Progressive Ptosis- 3rd Nerve Palsy- Cheyne Stoke RespirationVery Late Sign- Quadriparesis- B/L Dilated & fixed Pupil- Erratic Respiration & Death KERNOHAN'S NOTCH PHENOMENON- It is Cerebral Peduncle indentation associated with Trans tentorial or Uncal Herniation- Compression of contralateral cerebral peduncle against the free edge of Tentorium(KERNOHAN'S Notch) |I/L Hemiparesis & I/L 3rd Nerve Palsy KERNOHAN WOLTMAN SIGN- Lateral Displacement of MIDBRAIN|Compress opposite cerebral peduncle|* Babinski sign* Hemiparesis C/L to original Hemiparesis (K- WSIGN)
Ipsilateral dilated pupils
Ipsilateral hemiplegia
Cheyne stokes respiration
Decoicate rigidity
Cerebrovascular Diseases