Besides, the PICA is exposed in many surgical approaches and is vulnerable to damage. nystagmus in both PICA and AICA stroke patients, indicating. The syndrome was first described by Adolf Wallenberg (1862-1949), a German physician, in 1895 4. Clinical symptoms include swallowing difficulty, or dysphagia 1, slurred speech, ataxia, facial pain, vertigo, nystagmus, Horners syndrome, diplopia. The PICA is of great clinical importance with its unique anatomical complexity and is involved in many diseases, including ischemic stroke, aneurysm, neurovascular compression syndrome (NVCS), arteriovenous malformation (AVM), brain tumor, etc. The compromise of the vestibular nuclei in lateral medullary syndrome can cause nystagmus. syndrome patients, complementary quantitative vestibular function testing can be helpful to. The infarcted area has high DWI signal and is low signal on ADC 6. MRI with DWI is the best diagnostic test to confirm the infarct in the lateral medulla 6. Vertebral artery dissection, the commonest cause in young patients Lateral medullary syndrome is caused most commonly by:Ītherothrombotic occlusion of the vertebral artery, the posterior inferior cerebellar artery, or the medullary arteries Ipsilateral bulbar muscle weakness: hoarseness, dysphonia, dysphagia, and dysarthria, decreased gag reflex ( nucleus ambiguus) 1-3 The most common cause of Wallenberg Syndrome is an ischemic stroke in the VA or PICA of the brainstem, often the result of a thrombus or embolism. Also known as Lateral Medullary Syndrome or Wallenberg Syndrome. Lateral medullary syndrome is a neurological disorder causing a range of symptoms due to ischemia in the lateral part of the medulla oblongata in the brainstem. Sensory symptoms: loss of pain and temperature over the ipsilateral face (this may be variable 8) and contralateral side of body 1-3 Posterior Inferior Cerebellar Artery (PICA). Vestibulocerebellar symptoms: ipsilateral hemiataxia, vertigo, falling towards the side of lesion, multidirectional nystagmus ( inferior cerebellar peduncle and vestibular nucleus) 1-3Īutonomic dysfunction: ipsilateral Horner syndrome, hiccups 1-3 Hypertension is the commonest risk factor followed by smoking and diabetes mellitus 5. 20% of ischemic strokes occur in the posterior circulation 5. Lateral medullary syndrome is the most prevalent posterior ischemic stroke syndrome 5. The usual symptoms of lateral medullary infarction include vertigo, dizziness, nystagmus, ataxia, nausea and vomiting, dysphagia, and hiccups.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |