Myocardial infarction location based on coronary vessel involvement?,”RCA occlusion can cause acute inferior and posterior wall myocardial infarctions (MIs). Inferior wall MI presents with ST-segment elevations in the inferior leads (II, III, and aVF). ST-segment depression in leads V1 and V2 in this setting usually suggests a posterior wall MI. Inferior MI is also associated with hypotension, bradycardia

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CN V (trigeminal nerve) sensory deficit?,”CN V contains sensory fibers in its 3 branches; the V3 (mandibular) branch also contains motor fibers. The V1 (ophthalmic) branch carries sensory fibers to the scalp, forehead, upper eyelid, conjunctiva, cornea, nose, and frontal sinuses. Damage to the V1 branch causes corneal anesthesia. Common causes of CN V dysfunction include tumor, trauma

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Malignant biliary obstruction?,”Clinical presentations that may suggest malignant biliary obstruction are painless jaundice, pruritus, weight loss, with PE being normal or showing RUQ tenderness, mass, hepatomegaly. Labs show increased direct bilirubin, increased alkaline phosphatase, and normal to increased AST & ALT. Common causes are pancreatic or biliary cancer, gallstones

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