Endovascular Treatment of Patients with Oculomotor Nerve Palsy Induced by Posterior Communicating Artery Aneurysms

Objective: Whether coiling is the best treatment option for oculomotor nerve palsy (ONP) induced by posterior communicating artery (PComA) aneurysms remains controversial. In this study, we retrospectively analyzed the recovery of ONP caused by PComA aneurysms.Methods: Between 2007 and 2019, 8 patients with PComA aneurysms and ONP underwent coiling at our institution. We retrospectively reviewed ONP recovery, duration from onset of ONP to treatment, and complications of procedures.Results: At the last available clinical follow-up, ONP recovery was complete in 4 patients (50%) and partial in 4 patients (50%). Patients with partial recovery of ONP had sequelae of eye movement impairment that did not affect daily life. In 1 patient, hemiplegia developed due to cerebral infarction of the corona radiata the day after coiling, but it fully recovered 1 year after operation. The delay from the onset of ONP to coiling was significantly related to partial ONP recovery (r = -0.83, p = 0.01).Conclusion: Endovascular treatment is a relatively safe and satisfactory treatment for PComA aneurysms with ONP.