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FIRST AID USMLE STEP 1 HIGH YIELD QUESTIONS WITH CORRECT ANSWERS

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FIRST AID USMLE STEP 1 HIGH YIELD QUESTIONS WITH CORRECT ANSWERS

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Entacapone/Tolcapone MOA


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-Entacapone is COMT inhibitor that primarily serves to INCREASE the
bioavailability of levodopa by INHIBITING PERPHERAL METHYLATION

-Tolcapone is another COMT inhibitor that inhibits BOTH peripheral and
central methylation. It has hepatoxic though..unlike entacapone




Eosinophilic cytoplasmic inclusion in nerve cell


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Lewy body (Parkinson disease)

,Iron poisoning with multiple blood transfusions tx


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Deferoxamine




Chest pain on exertion


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Angina (stable: with moderate exertion; unstable: with minimal exertion or
at rest)




Unilateral facial drooping involving forehead


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LMN facial nerve (CN VII) palsy; UMN lesions spare the forehead




Confusion + Ataxia + Opthalmoplegia


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, -Wernicke Encephalopathy due to chronic thiamine deficiency

-The infusion of glucose WITHOUT thiamine in pts with chronic thiamine
deficiency prepipiates encephalopathy because thiamine is a cofactor of
the enzymes responsible for glucose metabolism




Severe jaundice in neonate


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Crigler-Najjar syndrome (congenital unconjugated hyperbilirubinemia)




Diverticulum in pharynx


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Zenker diverticulum (diagnosed by barium swallow)




Kaposi's Sarcoma


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-Usually involve skin and GI tract in HIV pts
-Biopsy shows SPINDLE cells, neovascularization, and extravasated red
blood cells

, Stippled vaginal epithelial cells


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"Clue cells" (Gardnerella vaginalis)




Giant B cells with bilobed nuclei with prominent inclusions ("owl's eye")


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Reed-Sternberg cells (Hodgkin lymphoma)




Fall on the outstretched hand


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Damages the hook of the hamate
-Can result in Ulnar never injury




Abdominal pain, ascites, and hepatomegaly


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Budd-Chiari syndrome (posthepatic venous thrombosis)
-Absence of JVD

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