Brainstem26 minutes

Here's a sample video from our neurology section, which contains more than 40 video modules. "Find the lesion" brainstem questions have dogged USMLE Step 1 exam-takers for years. It can be challenging to convert complex sensory and motor symptoms into a location in the brainstem that accounts for the clinical problem. In this video, Dr. Ryan teaches you the "Rule of 4s," an incredibly simple algorithm created by Dr. Peter Gates for solving those tough brainstem questions.

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Midbrain; Pons; Medulla; Rule of 4s. First Aid 2017: 474, 484; First Aid 2018: 488-490; First Aid 2019: 492

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