TY - CHAP M1 - Book, Section TI - Sixth-Nerve Palsy A1 - Singh, Manpreet A1 - Whitfield, Denise A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - The abducens nerve innervates the lateral rectus muscle and is the most common single muscle palsy, causing loss of abduction and resultant horizontal diplopia, worse in ipsilateral gaze. Associated findings are dependent on the location of the lesion. Within the pons, involvement of the corticospinal tract results in contralateral hemiparesis. The abducens has the longest intracranial course of any nerve, and therefore is vulnerable to stretching or compression secondary to elevated intracranial pressure, trauma, neurosurgical manipulation, and cervical traction. Also, any meningeal process (infectious, inflammatory, or neoplastic) can affect this portion of the 6th nerve. Aneurysmal compression is uncommon. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/10/15 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181038519 ER -