how is the first one performed?
It is a very complicated brain surgery.
Microvascular decompression
Patients are put to sleep using general anaesthesia and are positioned on their back with their head turned or on their side with the symptomatic side facing up. Electrical monitoring of facial function and hearing is used. A straight incision is made two finger-breadths behind the ear about the length of the ear. A portion of the skull around 30 mm (1.2 inches) in diameter is removed exposing the underlying brain covering known as the dura. The dura is opened to expose the cerebellum. The cerebellum is allowed to fall out of the way exposing the side of the brainstem. Using a microscope and micro-instruments, the arachnoid membrane is dissected allowing visualization of the 8th, 7th and finally the trigeminal nerve. The offending loop of blood vessel is then mobilized. Frequently a groove or indentation is seen in the nerve where the offending vessel was in contact with the nerve. Less often the nerve is thin and pale. Once the vessel is mobilized a sponge like material is placed betw
what is the largest part of the mature brain UNANSWERABLE where exactly is the cerebellum located? In the posterior cranial fossa. what is this part of the brain made up of? It consists of a tightly folded layer of cortex, with white matter underneath and a fluid-filled ventricle at the base. from where does it get its blood supply? The superior cerebellar artery, the anterior inferior cerebellar artery, and the posterior inferior cerebellar artery. what is the clinical significance of the first one? It is the cause of trigeminal neuralgia. what is this mentioned problem all about? It is a long-term pain disorder that affects the trigeminal nerve. what are the symptoms it causes? This disorder is characterized by episodes of severe facial pain along the trigeminal nerve divisions. how can it be treated? Microvascular decompression provides freedom from pain in about 75% of patients presenting with drug-resistant trigeminal neuralgia.
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Microvascular decompression [SEP] Surgical technique
Patients are put to sleep using general anaesthesia and are positioned on their back with their head turned or on their side with the symptomatic side facing up. Electrical monitoring of facial function and hearing is used. A straight incision is made two finger-breadths behind the ear about the length of the ear. A portion of the skull around 30 mm (1.2 inches) in diameter is removed exposing the underlying brain covering known as the dura. The dura is opened to expose the cerebellum. The cerebellum is allowed to fall out of the way exposing the side of the brainstem.