Abstract
Background ContextWe receive a large number of patients with spinal cord injury (SCI) due to penetrating gunshot wounds (GSW) at our national rehabilitation center. Although many patients are labeled American Spinal Injury Association (ASIA) B sensory incomplete because of sensory sparing, especially deep anal pressure, with purported prognostic value, we have not observed a clinical difference from patients labeled ASIA A complete. We hypothesized that sensory sparing, if meaningful, should reduce the occurrence of pressure ulcers. PurposeTo determine if ASIA classifications A and B are important distinctions for patients with SCIs secondary to civilian gunshot wounds. Design/SettingA retrospective chart review was performed on all patients with civilian gunshot-induced SCI transferred to Rancho Los Amigos Rehabilitation Center between 1999 and 2014. Outcome measures were occurrence of pressure ulcers and surgical intervention for pressure ulcers. Patient SampleWe included a total of 487 patients who sustained civilian gunshot wounds to the spine and were provided care at Rancho Los Amigos Rehabilitation Center from 2001 to 2014. Outcome MeasuresOccurrence of pressure ulcers and surgical intervention for pressure ulcers among patients who suffered civilian-induced gunshot wounds to the spine. MethodsRetrospective chart review identified 487 SCIs due to gunshot wounds that were treated at Rancho Los Amigos from 2001 to 2014. Injury characteristics including ASIA classification, pressure ulcers, and pressure ulcer surgeries were recorded. Comprehensive surgical data were obtained for all patients. Chart reviews and telephone interviews were performed to determine the occurrence of any pressure ulcers and pressure ulcer surgeries. Statistical analysis was performed to compare data by spinal region and ASIA grade. There were no conflicts of interest from any of the authors, and there was no funding obtained for this study. ResultsThere was no statistical difference for cervical ASIA A versus ASIA B for the occurrence of pressure ulcers or the percentage requiring surgery, nor for thoracic A versus B. When grouped, there was a statistically higher occurrence of pressure ulcers in cervical A or B classification than in thoracic A or B classification, but a higher rate of surgery for thoracic A or B classification. Lumbosacral cauda equina levels were not statistically different in occurrence of pressure ulcers or pressureulcer surgery by ASIA grades A–D. Overall, when grouped C1–T12, cord-level cervicothoracic A and B classifications were statistically equivalent. C1–T12 cord level C or D classification with motor sparing had statistically lower occurrence and need of surgery for pressure ulcers and were equivalent to lumbosacral cauda equina level A–D. ConclusionASIA A and B distinctions are not meaningful at spinal cord levels in the cervicothoracic spine due to gunshot wounds as shown by similar occurrence of pressure ulcers and pressure ulcer surgery, and should be treated as if the same. Meaningful decrease of pressure ulcers at cord levels does not occur until there is motor sparing ASIA C or D. Furthermore, cauda equina lumbosacral injuries are a lower risk, which is independent of ASIA grade A–D and statistically equivalent to cord level C or D. Motor sparing at cord levels or any cauda equina level is most determinative neurologically for the occurrence of pressure ulcers or pressure ulcer surgery.
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