The%20vascular%20Disease%20Lecture%20Aug%2009_student%20Part%20B_pptx

The%20vascular%20Disease%20Lecture%20Aug%2009_student%20Part%20B_pptx

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By Dr Brett Lillie - 2009 By Dr Brett Lillie August 2008
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By Dr Brett Lillie - 2009
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80 % occur in carotid (Ant) circulation 20 % occur in vertebrobasilar (post) circulation By Dr Brett Lillie - 2009
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Can They; Smile Raise both arms Stand steady on both feet with eyes closed Speak a simple sentence with several vowels that run together such as “simple Simon says” Stick out their tongue By Dr Brett Lillie - 2009
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Diplopia double vision Dizziness Vertigo/light headed Drop Attacks Sudden numbness/ weakness of Face/arms/leg Dysarthria Speech Dysphagia Swallow By Dr Brett Lillie - 2009
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Nausea Numbness decrease sens on 1 side of face Nystagmus invol rapid eye mvt’s By Dr Brett Lillie - 2009
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Ischemic stroke = decrease in glucose + Oxygen = Anaerobic = “ischaemic cascade” Severity = dur + size of decrease in b. flow Typically 20-30% for > 1hr = nescrosis Around focal site is the Penumbra By Dr Brett Lillie - 2009
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Lacunar = occlusion of single penetrating a. to brain resulting in subcortical infarct (less then 1.5 cm) Hemorrhage into subarachnoid space often follows rupture of a berry aneryism (typically found around circle of Willis) By Dr Brett Lillie - 2009
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Strokes There are 4 major types of strokes: 1. thrombotic (gradual, often during sleep) 2. embolic (sudden, often during daily activities) 3. Lacunar (four types of these) 4. Hemorrhage (may not be clear signs, Often consciousness early on, Commonly fluctuates in mental status) By Dr Brett Lillie - 2009
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Pathophysiology and Clinical Syndromes of Carotid Stroke + TIA’s 2 basic mechanisms a. Low-flow hemodynamic b. A. to a. embolism (can occur separately or together) - Low-flow stroke usually inadequate perfusion distal to a stenosis or occlusion of Int. Carotid a. -
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The%20vascular%20Disease%20Lecture%20Aug%2009_student%20Part%20B_pptx

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