Endovascular therapy

Endovascular therapy is a minimally invasive technique which accesses the area requiring treatment from within the blood vessel (Brain). Rupture of intracranial aneurysms causes subarachnoid hemorrhage and occurs in roughly six to eight of every 100,000 cases in the western population (International 1267). Surgical intervention to clip the ruptured aneurysm to prevent bleeding is risky, but in some cases the benefits outweigh the risks. Advances in the development of operating microscopes, better microsurgical techniques and instruments, better anesthetics and intensive care management, improved diagnostics, and the adoption of vascular surgery as a subspecialty have reduced the risks, but still relatively few patients are able to resume a normal lifestyle after surgical intervention and many of them have severe neurological or cognitive deficits.

In 1990 a detachable platinum coil known as the Guglielmi detachable coil was first used as an investigational device in the USA, spread to Europe in 1992, and was approved by the U. S. Food and Drug Administration in 1995 (International 1267). It allowed the development of endovascular techniques for occlusion of intracr

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