• Sho Nakamura, Shinsuke Yoshida, Hiromi Matsuda, Tadashi Yahata, Koichi Inokuchi, Takanori Maru, Satoshi Ogihara, Kazuo Saita, and Soichi Oya.
• Department of Neurosurgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
• World Neurosurg. 2023 Mar 1; 171: e859e863e859-e863.

BackgroundEarly decompressive surgery within 24 hours improves the functional outcome of patients with traumatic spinal cord injury; however, little is known about the effect of early surgery for spontaneous spinal epidural hematoma (SSEH). In this study, we aimed to investigate the effectiveness of ultraearly hematoma evacuation (<12 hours) for SSEH.MethodsPatients with SSEH treated with surgical hematoma evacuation at our institution between January 2000 and July 2021 were retrospectively analyzed. Neurologic function was evaluated using the American Spinal Injury Association Impairment Scale (AIS). AIS grades A-C were defined as severe, and grades D and E as mild. AIS grades D and E at the final follow-up were considered favorable outcomes. Preoperative status and postoperative treatment results were compared between patients who had hematoma evacuation within 12 hours of onset and those who underwent surgery after 12 hours.ResultsTwenty-five consecutive patients were included in the analysis. Preoperatively, 23 patients (92.0%) had severe AIS. Fourteen (56.0%) patients underwent early surgery. At the final follow-up, 21 patients (84.0%) achieved favorable outcomes. Patients treated with ultraearly surgery had significantly better outcomes (100% vs. 63.6%, P = 0.03). Additionally, the time from onset to surgery was significantly shorter in patients with AIS improvement by 2 or more grades than that in patients with AIS improvement of 1 or less (median 8 hours vs. 14 hours, P = 0.0001).ConclusionsUltraearly surgery within 12 hours for SSEH was associated with better functional outcomes.Copyright © 2023 Elsevier Inc. All rights reserved.

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