Features of tentorial herniation include:
A. Vomiting
B. Deterioration of consciousness
C. Dilated pupil
D. Impaired respiration
E. Hemiparesi
Ans. A,B,C,D,E
Tentorial
herniation:
• Occurs when a
mass lesion makes one cerebralhemisphere too large for its compartment and
cause the
Infero-medial part
of the cerebral hemisphere to bepushed through the tentorial hiatus ( which
separates thecerebrum from the cerebellum)
• The increased
pressure causes vomiting
• Deterioration of
consciousness occurs due todisturbance of the reticular formation
• Compression on
the third nerve results in dilated pupil,ocular palsy and ptosis
• Results in
coning with the whole brainstem beingpushed downward. This interfere with the
vital functionsof respiration (controlled by medulla oblongata)compression of
the pyramidal fibres result in hemiparesis
