Monday, December 6, 2010

Cerebrovascular Diseases - Cerebral Embolism

I am Dr. Funom Theophilus Makama (while still a student). I am a candidate for Cardio-thoracic surgeon and also I love to write. I write articles (especially...)


Piston usually derived from the heart, or sometimes ateromas plates in carotid or vertebrobasilar systems. Emboli commonly consist of thrombi, ateromas, heart vegetations and limestone particles, but rarely fat plates, air tissue and the tumor can be seen. The clinical setting in stroke occurs often provides the track to the nature of the piston. When a piston is hosted in an artery, leads to the distal thrombosis ramifying vessels or can fragment and get affected in small boats. Caused by piston strokes are often bleeding from the blood that flows toward escapes vessels damaged cerebral ischaemic or necrotic tissue. The territory of the Middle cerebral artery participates frequently in embolism. The most common cause is chronic atrial fibrillation artrial occur in rheumatic heart disease or atherosclerotic. Other causes include murals thrombi myocardial infarction, vegetations prosthetic valves, bacterial endocarditis, and mitral valve rarely prolapses. Iatrogenic factors include complications during Arteriography or surgery of the neck and chest.


The clinical picture depends on the involved artery. Piston usually sits on a branch instead of the mainstem of an artery. Therefore it is more common to produce a focal motor aphasia or monoplegia disorder instead of a full stroke. Deficit is often transient since the plunger pass distally in small boats.


Diagnosis: this is confirmed by CT. Review of the community support framework may exclude a haemorrhagic injury. Septic emboli CSF can show pleocytosis.


Management: prevention of cerebral embolism is more important than its treatment. Restoration of atrial fibrillation in anticoagulant in patients with myocardial infarction valve prosthesis long-term and heart to prevent Embolic complications therapy and normal sinus rhythm. Once finished the embolism, however, is necessary to exclude a haemorrhagic infarction before starts anticoagulant therapy. Cerebral embolism which is complicated by bacterial endocarditis, should retain anticoagulants for risk of intracranial hemorrhage.


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