Medicine an Surgery notes

Apr 24th, 2015
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HYDROCEPHALUSDefinition-Hydrocephalus is the abnormal rise in cerebrospinal fluid volume with ventricular dilatation due to imbalance of cerebrospinal fluid production and absorption.It is usually accompanied by increased intracranial pressure. Hydrocephalus is a diverse group of conditions, which result from;1)Impaired circulation of CSF 2)Impaired absorption of CSF3)In the rare circumstance, from increased production by a choroid plexus papillomaThe most common causes of hydrocephalus in acquired cases are tumor obstruction, trauma, intracranial hemorrhage, and infection.PathophysiologyFlow of CSFCSF is produced in the lateral ventricle choroid plexus at 30mL/hr (20mL/hr in infants) Foramen of Monro ? 3rd VentricleCerebral aqueduct of sylvius ? 4th VentricleForamen of Lushka(2-leteral)? magendie foramen Subarachnoid basal cisterns posteriorly over the cerebellum and cerebral cortex, and anteriorly through the cistern system and over the convexities

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