Moinay Kim1, Suk Kyung Hong2, Sang Ryong Jeon1, Sung Woo Roh1, Seungjoo Lee3. 1. Department of Neurological Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. 2. Division of Trauma and Surgical Critical Care, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. 3. Department of Neurological Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; Division of Neurosurgical Critical Care, Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. Electronic address: rghree@amc.seoul.kr.
Abstract
OBJECTIVES: Surgical management of spinal cord injury (SCI) is challenging. There is no standard guideline regarding the timing of surgery, although physicians have prioritized early surgery over the past decades. Although better outcomes have been observed from these studies, the definition of early surgery has been controversial, although mostly limited to 24-hours after injury. For some hospitals, this early surgery could be difficult to implement in practice. Hence, we re-evaluated the timing of early surgery as surgery within 48 hours and investigated the surgical outcomes of SCI depending on whether surgery was performed early (≤48 hours) or late (>48 hours). The primary outcomes were improvement in the American Spinal Injury Association Impairment Scale (AIS) grade in early and late surgery groups. METHODS: This study was a retrospective cohort study in individuals aged 15-85 years, who underwent surgery for SCI between 2005 and 2016. The rate of AIS grade improvements was measured at 6 months after injury. Of the 86 enrolled patients, 31 (mean, 40.9 ± 12.64 hours) and 55 (mean, 168.25 ± 93.01 hours) patients were assigned to the early and late surgery groups, respectively. RESULTS: AIS grade improvement was significantly greater in the early than in the late group (P = 0.039). In the early group, there was no significant difference in neurologic improvements among the AIS B, C, and D groups, but the AIS A group showed a significant improvement (P = 0.015). This finding was not observed in the late group (P = 0.060). AIS grade improvement was also significantly greater in the incomplete SCI group than in the complete SCI group, for all measurements (early, P = 0.007, late, P = 0.009). Other factors that significantly affected clinical outcomes were AIS grade on admission and the level of the injury.
OBJECTIVES: Surgical management of spinal cord injury (SCI) is challenging. There is no standard guideline regarding the timing of surgery, although physicians have prioritized early surgery over the past decades. Although better outcomes have been observed from these studies, the definition of early surgery has been controversial, although mostly limited to 24-hours after injury. For some hospitals, this early surgery could be difficult to implement in practice. Hence, we re-evaluated the timing of early surgery as surgery within 48 hours and investigated the surgical outcomes of SCI depending on whether surgery was performed early (≤48 hours) or late (>48 hours). The primary outcomes were improvement in the American Spinal Injury Association Impairment Scale (AIS) grade in early and late surgery groups. METHODS: This study was a retrospective cohort study in individuals aged 15-85 years, who underwent surgery for SCI between 2005 and 2016. The rate of AIS grade improvements was measured at 6 months after injury. Of the 86 enrolled patients, 31 (mean, 40.9 ± 12.64 hours) and 55 (mean, 168.25 ± 93.01 hours) patients were assigned to the early and late surgery groups, respectively. RESULTS: AIS grade improvement was significantly greater in the early than in the late group (P = 0.039). In the early group, there was no significant difference in neurologic improvements among the AIS B, C, and D groups, but the AIS A group showed a significant improvement (P = 0.015). This finding was not observed in the late group (P = 0.060). AIS grade improvement was also significantly greater in the incomplete SCI group than in the complete SCI group, for all measurements (early, P = 0.007, late, P = 0.009). Other factors that significantly affected clinical outcomes were AIS grade on admission and the level of the injury.
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