Episodio – Parálisis del III par craneal: ptosis, pupila fija y “down & out” | USMLE Step 1 episode artwork

EPISODE · Nov 17, 2025 · 6 MIN

Episodio – Parálisis del III par craneal: ptosis, pupila fija y “down & out” | USMLE Step 1

from USMLE DREAMERS · host USMLE DREAMERS

Paciente con diplopía y defecto pupilar eferente del ojo izquierdo. Revisamos la anatomía esencial del nervio oculomotor, sus funciones motoras y parasimpáticas, y su lesión característica: desviación “down and out”, ptosis y pérdida de la respuesta pupilar. Caso fundamental para identificar rápidamente alteraciones pupilares y diferenciar lesiones de CN III, IV y VI.#USMLE #Step1 #USMLEDreamers #Neuroanatomia #CranialNerves #CNIII #OculomotorPalsy #Diplopia #MedicalEducation

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Episodio – Parálisis del III par craneal: ptosis, pupila fija y “down & out” | USMLE Step 1

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