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FACP. Colegio de médicos de Tarragona Nº 4305520 / fgcapriles@gmail.com

WORLD EMERGENCY MEDICINE SOCIETIES

Cranial Nerve VI Palsy Emergency

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viernes, 8 de abril de 2016

Update on TIA

emDocs - April 7, 2016 - Author: Long B - Edited by: Robertson J and Koyfman A
..."The TIA was once defined as a transient neurologic deficit, due to ischemia, with resolution of symptoms in less than 24 hours. In 2009, the American Heart Association (AHA) redefined the TIA as a ‘brief episode of neurological dysfunction resulting from focal cerebral ischemia not associated with permanent cerebral infarction.’ Importantly, even if a patient has resolved symptoms but has a visible infarct on imaging, he or she should be classified as having a stroke. Diagnosing a stroke requires imaging resources, most commonly diffusion–weighted magnetic resonance imaging (DWI). With the new definition of TIA, the annual incidence of stroke has increased, but the number of patients disabled due to stroke has decreased..."
TIAs should be taken seriously. In 2007, Johnston et al. demonstrated that patients with TIAs have a 5% risk of stroke within two days and a 10% risk of stroke within three months after sustaining the initial TIA. TIAs are thought to precede approximately 14%-23% of acute ischemic strokes (AIS). A second study demonstrated similar numbers and also found thatsymptom duration over 60 minutes, age over 60 years, and increased blood pressure were associated with worse clinical outcomes.