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What is the most common etiology of global cerebral hypoperfusion?
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Read more“What is the management of carotid disease for stroke prevention, including timeline?”
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Read moreWhat are the 4 tubes in an LP sent for?,”1. Cell count (yellow is xanthochromia, which means blood)2. Biochemistry (glucose, protein)3. Cytology4. Microbiology (culture, AFB, viral serology, fungal culture
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Read moreWhere are berry aneurysms most common?,”Anterior communicating (30%), then posterior community
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Read moreWhat are the 2 main risk factors for berry aneurysms?,”1. PCKD2. CT Dz (Marfan’s, Ehlers-Danlos
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Read moreWhen is CT scanning most sensitive for SAH?,”Non-contrast CT most sensitive within 6 hours of symptoms if read by qualified radiologist (100% sensitivity). Goes down after 6 hours, rapidly after 12-24 hours, so 6+ hours
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Read moreWhat is 100% sensitive for distinguishing SAH on LP from traumatic LP (skin vessels)?,”Xanthochromia (Presence of bilirubin in LP, takes 12 hours to breakdown RBC into bilirubin).CT sensitivity decreases with time (best when <12h). Xanthochromia remains highly sensitive for 2 weeks.Best done to diagnose SAH 12 hours - 14 days after onset of symptoms
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Read moreWhat are 6 unique features of ulcerative colitis?,”CT PATHContinuous lesionTenesmus
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Read moreDifferentiate AVNRT and AVRT in terms of features and management?,”AVNRT – nodal re-entry, P waves usually buried in QRS or appear inverted after QRS, can attempt vagal maneuvers (carotid massage)AVRT – orthodromic/antidromic accessory pathway, DON’T USE AV BLOCKERS as it can make it worse (e.g WPW with Delta waves, QRS prolongation)
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