Hydrocephalus can also be classified into non-communicating obstructive and communicating non-obstructive. Reduced flow and absorption of CSF into specialized blood vessels called arachnoid villi can also result in a buildup of CSF in the ventricles and communicating hydrocephalus.
Hydrocephalus may be described as either communicating in which the obstruction to the flow of CSF occurs outside the brain ventricles or noncommunicating also called obstructive hydrocephalus in which the obstruction to the flow of CSF occurs within the ventricles.
Pathophysiology of hydrocephalus in flow chart. Hydrocephalus is a disorder in which an excessive amount of cerebrospinal fluid CSF accumulates within the cerebral ventricles andor subarachnoid spaces resulting in ventricular dilation and increased intracranial pressure ICP The physiology pathogenesis and etiology of hydrocephalus will be reviewed here. Causes Etiology Congenital Acquired Hydrocephalus may be congenital or acquired. In rare cases communicating hydrocephalus arises from overproduction of CSF and thus does not involve a blockage of flow of.
Close suggestions Search Search. For a discussion of this terminology please refer to the more general article on hydrocephalus. Obstructive hydrocephalus is caused by a blockage to the natural ventricular drainage system and CSF flow.
To enlist the causes of hydrocephalus. Ch i b l i l tiChanges in cerebral circulation. To explain types of hydrocephalus their pathophysiology.
The medical treatment for hydrocephalus is shunting. Primary mechanisms consist largely of developmental disorders that cause congenital pathologies such as intraventricular subarachnoid and intraparenchymal hemorrhage meningitis and other infections and tumors. Cerebrospinal fluid normally flows through the ventricles and bathes the brain and spinal column.
Congenital hydrocephalus is present at birth and may be caused by either environmental influences during fetal development or genetic predisposition. Embolism due to fragments of blood clots presence of a tumor fat bacteria or air. By a combination of retrospective chart.
Lining and then the underlying white matter Increase in water content due to transpendymal flow of CSF from elevated Bulging and protrution of intraventricular and the. Non-communicating hydrocephalus happens when the flow of CSF is blocked along one or more of the narrow passages connecting the ventricles. The excess fluid increases the size of the ventricles and puts pressure on the brain.
Communicating hydrocephalus is due to reduced absorbance of CSF by the arachnoid villi or rarely due to increased CSF production. To enlist diagnostic evaluation for hydrocephalus. The term normal pressure hydrocephalus was based on the finding that all 3 patients reported by Hakim and Adams showed low CSF pressures at lumbar puncture namely 150 180 and 160 mm H 2 O.
The caudal descent of the brainstem results in an increased resistance to CSF flow through. To describe the management of. Noncommunicating hydrocephalus is caused by obstruction or blockage caused by tumors blood clot infection or abnormal fetal development.
Chapter 16 Pathophysiology of Hydrocephalus 211. Communicating hydrocephalus is caused by faulty absorption of CSF. Hydrocephalus is a condition that occurs when fluid builds up in the skull and causes the brain to swell.
God bless God bless Open navigation menu. Hydrocephalus is the buildup of fluid in the cavities ventricles deep within the brain. The name means water on the brain Brain damage can occur as a result of the fluid.
A blockageTumors cysts birth defects and other objects in the brain can block or affect the normal flow of cerebrospinal fluid. 5132010 105212 AM. Stroke or otherwise known as cerebrovascular accident CVA or sometimes called as cerebrovascular disease CVD is the infarction of a specific portion of the brain brought about by insufficient blood supplyStroke may occur due to thrombosis.
While hydrocephalus is typically a disease that strikes children there are several forms that can affect adults. Communicating hydrocephalus is commonly used as the opposite of obstructive hydrocephalus which leads to much unnecessary confusion as most causes of communicating hydrocephalus do have an element of obstruction to normal CSF flow absorption. Diversion of CSF flow to alternative pathways.
Microsoft PowerPoint – CSF Physiology and Pathophysiology of Hydrocephalusppt Compatibility Mode Author. Hydrocephalus pathophysiology – Free download as Word Doc doc or read online for free. No obstruction or blockage in the ventricular system occurred.
When this balance is disturbed hydrocephalus is the result. Ppts on hydrocephalus 1. The evaluation and treatment of these conditions is often quite different.
To discuss the physiology of formation of CSF production flow. In adult onset of obstructive. The most common forms of adult hydrocephalus are obstructive hydrocephalus normal pressure hydrocephalus and pseudotumor cerebri idiopathic intracranial hypertension.
To differentiate the clinical manifestation in infants in childhood. Hydrocephalus is a multifactorial disorder. Hydrocephalus can be defined broadly as a disturbance of cerebrospinal fluid CSF formation flow or absorption leading to an increase in volume occupied by this fluid in the central nervous.
The three main causes of hydrocephalus are. Intracerebral hemorrhage because of a ruptured cerebral vessel.