Normal pressure Hydrocephalus - woodywoodpecker

[ArchivalUser]

Why is it called Normal pressure Hydrocephalus?

[ArchivalUser]

what is the mechanism of incontinence in NPH?

[ArchivalUser]

because CSF pressure is NORMAL in NPH.....hahah

actually as pressure rises in ventricles....they dilate and due to this pressure remains normal...but this is not 100% true....NPH have intermittent elevation in CSF pressure

dilating ventricles exert pressure on the adjacent motor fibers in corona radiata which supply to bladder and lower limb : accounting for incontinent and gait abnormality

dilating ventricles also apply pressure to adjacent limbic system which is responsible for dementia......

[ArchivalUser]

NPH differs from other causes of adult hydrocephalus. An increased subarachnoid space volume does not accompany increased ventricular volume. Clinical symptoms result from distortion of the central portion of the corona radiata by the distended ventricles. This includes the sacral motor fibers that innervate the legs and the bladder, thus explaining the abnormal gait and incontinence. Dementia results from distortion of the periventricular limbic system

[ArchivalUser]

yes v good,
Mechanism of U.Incontinence in NPH( this is what I found in google.

Urinary incontinence usually is present only in advanced cases and likely results from disruption of periventricular pathways to the sacral bladder center. This results in decreased inhibition of bladder contractions and, consequently, instability of bladder detrusors. Only in extremely advanced cases of NPH, with severe frontal lobe dysfunction, is incontinence a result of lack of concern for micturition.