TIAvsStroke_GH - Learning Issue: TIA vs Stroke - Samuel...

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Learning Issue: TIA vs Stroke - Samuel Johnson Name: GINA HENDRICKS Definition TIA Transient Ischemic Attack - less-than-1-hour episode of focal dysfunction caused by brain or retinal ischemia that results in no imaging evidence of acute infarction on diffusion- weighted magnetic resonance imaging Etiology In the majority of cases, emboli of platelets and fibrin or of atheromatous material that breaks off from a vessel wall transiently occlude a cerebral or ophthalmic artery or one of its branches. most frequently among male African Americans Risk factors for stroke: advanced age, elevated systolic blood pressure, current smoking, and the presence of diabetes, atrial fibrillation, or coronary heart disease Symptoms Symptoms of TIA associated with carotid disease : include transient monocular blindness, clumsiness, weakness , or numbness of the hand , and disturbed speech Symptoms of vertebrobasilar disease : include binocular visual disturbance, vertigo, paresthesias, diplopia, ataxia, dysarthria, light-headedness, generalized weakness, loss of consciousness , and transient global amnesia. Physical Exam/Signs Diagnostic Testing Directed to the cardiovascular and nervous systems - One checks for hypertension, atrial fibrillation , and heart murmurs. ---Neurologic examination findings are likely to be normal if the examination is
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TIAvsStroke_GH - Learning Issue: TIA vs Stroke - Samuel...

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