Saturday 31 October 2015

Stroke" is one of the leading causes of morbidity and mortality worldwide.But not all "strokes" are the same.Nearly 80% of strokes are caused by major territorial acute cerebral ischemia/infarction while an additional 15% are spontaneous intracranial "brain bleeds."Another 4% are nontraumatic subarachnoid hemorrhages (SAH).That leaves just 1-2% of "miscellaneous" strokes.Why should we bother?In this lecture we will look both at the 1-2% of miscellaneous strokes as well as the less common causes of acute cerebral ischemia/ infarction such as borderzone infarcts.We will identify the two types of watershed infarcts and discuss their clinical and imaging implications.Nontraumatic, nonaneurysmal SAH has different imaging patterns with different etiologies.Venous occlusions have confusing clinical presentations and can be easily overlooked on imaging studies.We will also discuss uncommon but important stroke pathologies such as cerebral hyperperfusion syndromes, transient global amnesia, the thrombotic microangiopathies, etc, and how to identify them.Learning Objectives: The participants will learn how to differentiate internal and external watershed infarctions.Participants will learn how to identify convexal subarachnoid hemorrhage and offer an age-based differential diagnosis.Participants will learn how to identify subtle findings of venous strokes including isolated cortical vein occlusions.Management of anaphylaxis and allergic reactions in a difficult environment -i.e.