Practical neurology
-
Intravenous thrombolysis significantly improves the chance of independent recovery from ischaemic stroke but its benefit is strongly time dependent: present evidence supports effectiveness when delivered up to 4.5 h after symptom onset but the chance of recovery is twice as great when it is given within 90 min compared with 3-4.5 h. Delivery of treatment to a high proportion of patients is possible but requires clinicians to optimise systems for patient transfer, clinical and radiological assessment. ⋯ Most acute stroke teams cross traditional medical disciplines. Thrombolysis should ideally be delivered within an integrated service that seamlessly includes acute stroke unit care and rehabilitation.
-
An unusual case is presented of a tourist who developed fatal cerebral air embolism, pneumomediastinum and pneumopericardium while ascending from low altitude to Europe's highest railway station. Presumably the air embolism originated from rupture of the unsuspected bronchogenic cyst as a result of pressure changes during the ascent. ⋯ People with known bronchogenic cysts should be informed about the risk of cerebral air embolism and surgical removal should be considered. Cerebral air embolism is a rare cause of coma and stroke in all activities with rapid air pressure changes, including alpine tourism, as our unfortunate tourist illustrates.
-
Practical neurology · Aug 2009
ReviewPrevention and treatment of medical and neurological complications in patients with aneurysmal subarachnoid haemorrhage.
Treatment of patients with aneurysmal subarachnoid haemorrhage not only involves securing the aneurysm by endovascular coiling or surgical clipping but also prevention and treatment of the medical and neurological complications of the bleed. These acutely ill patients should be looked after in specialised centres by a multidisciplinary team that is available 24 h a day, 7 days a week. ⋯ For patients who develop delayed ischaemia, there is no evidence that hypervolaemia, haemodilution, hypertension, balloon angioplasty or intra-arterial vasodilating agents improve outcome. Lumbar puncture is a safe and reasonably effective way of treating those forms of acute hydrocephalus that are not caused by intraventricular obstruction.