Hydrocephalus is a condition that
occurs when there is too much cerebrospinal fluid in the ventricles (cavities)
of the brain. Cerebrospinal Fluid is a clear fluid that bathes the brain and
spinal cord, providing a cushion, nutrients and carrying away waste. Normally,
this fluid cushions your brain. When you have too much, though, it puts harmful
pressure on your brain.
Causes Of Hydrocephalous.
Hydrocephalus can be inherited
genetically or is also often associated with conditions that affect the brain
and /or spinal column, such as meningitis and spina bifida. Currently, 80-90%
of people with spina bifida also have hydrocephalus. Other causes can include
bleeding within the brain, brain tumors, head injuries, complications of
premature birth such as hemorrhage, or diseases such as meningitis or other
infections. In some cases, normal flow of CSF within the brain is blocked,
resulting in fluid build-up. Hydrocephalus may be congenital or acquired.
Congenital hydrocephalus is present
at birth and may be caused by either events or influences that occur during
fetal development, or genetic abnormalties.
Acquired hydrocephalus develops at
the time of birth or at some point afterward. This type of hydrocephalus can
affect individuals of all ages and may be caused by injury or disease
- headache followed by vomiting
- nausea
- downward deviation of the eyes (the eyes look downwards)
- urinary incontinence
- poor coordination, (clumsiness)
- difficulty walking.
- Irritability and other changes in personality.
The
surgical procedure to implant a VP (ventricular peritoneal) shunt usually
requires less than an hour in the operating room. After the patient is placed
under general anesthesia, their scalp is shaved and the patient is scrubbed
with an antiseptic from the scalp to the abdominal area. These steps are taken
in order to reduce the chances of an infection. Incisions are then made on the
head and in the abdomen to allow the neurosurgeon to pass the shunt's tubing
through the fatty tissue just under the skin. A small hole is made in the
skull, opening the membranes between the skull and brain to allow the
ventricular end of the shunt to be passed through the brain and into the
lateral ventricle. The abdominal (peritoneal) end is passed into the abdominal
cavity through a small opening in the lining of the abdomen where the excess
CSF will eventually be absorbed. The incisions are then closed and sterile bandages
are applied.
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