Why does dandy-walker cause obstructive/non-communicating hydrocephalus (versus communicating)?
In Dandy Walker, the absence of the cerebellar vermis causes the fourth ventricle to dilate and obstruct the flow through Foramen of Megendie and Luschka into the subarchnoid space. = Hydrocephalus
Ill expand on that and add even Arnold Chiari or even a tumor like a astrocytoma can cause noncommunicating hydrocephalus.
Communicating (Non- obstructive)= Is more of a problem in the arachnoid villi not reabsorbing that CSF. = Hydrocephalus
Think of it in context of the Ventricles.
When we OBSTRUCT the flow through the ventricle we block the communication of each ventricle to one another, there is a noncommunication (totally poor english lol)
With communicating hydrocephalus, the ventricles are connected with each other just fine.
makes sense. thanksIn Dandy Walker, the absence of the cerebellar vermis causes the fourth ventricle to dilate and obstruct the flow through Foramen of Megendie and Luschka into the subarchnoid space. = Hydrocephalus
Ill expand on that and add even Arnold Chiari or even a tumor like a astrocytoma can cause noncommunicating hydrocephalus.
Communicating (Non- obstructive)= Is more of a problem in the arachnoid villi not reabsorbing that CSF. = Hydrocephalus
Think of it in context of the Ventricles.
When we OBSTRUCT the flow through the ventricle we block the communication of each ventricle to one another, there is a noncommunication (totally poor english lol)
With communicating hydrocephalus, the ventricles are connected with each other just fine.