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http://dx.doi.org/10.3340/jkns.2012.52.4.396

Long-Term Incidence and Predicting Factors of Cranioplasty Infection after Decompressive Craniectomy  

Im, Sang-Hyuk (Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine)
Jang, Dong-Kyu (Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine)
Han, Young-Min (Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine)
Kim, Jong-Tae (Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine)
Chung, Dong Sup (Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine)
Park, Young Sup (Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine)
Publication Information
Journal of Korean Neurosurgical Society / v.52, no.4, 2012 , pp. 396-403 More about this Journal
Abstract
Objective : The predictors of cranioplasty infection after decompressive craniectomy have not yet been fully characterized. The objective of the current study was to compare the long-term incidences of surgical site infection according to the graft material and cranioplasty timing after craniectomy, and to determine the associated factors of cranioplasty infection. Methods : A retrospective cohort study was conducted to assess graft infection in patients who underwent cranioplasty after decompressive craniectomy between 2001 and 2011 at a single-center. From a total of 197 eligible patients, 131 patients undergoing 134 cranioplasties were assessed for event-free survival according to graft material and cranioplasty timing after craniectomy. Kaplan-Meier survival analysis and Cox regression methods were employed, with cranioplasty infection identified as the primary outcome. Secondary outcomes were also evaluated, including autogenous bone resorption, epidural hematoma, subdural hematoma and brain contusion. Results : The median follow-up duration was 454 days (range 10 to 3900 days), during which 14 (10.7%) patients suffered cranioplasty infection. There was no significant difference between the two groups for event-free survival rate for cranioplasty infection with either a cryopreserved or artificial bone graft (p=0.074). Intergroup differences according to cranioplasty time after craniectomy were also not observed (p=0.083). Poor neurologic outcome at cranioplasty significantly affected the development of cranioplasty infection (hazard ratio 5.203, 95% CI 1.075 to 25.193, p=0.04). Conclusion : Neurologic status may influence cranioplasty infection after decompressive craniectomy. A further prospective study about predictors of cranioplasty infection including graft material and cranioplasty timing is necessary.
Keywords
Decompressive craniectomy; Cranioplasty infection; Neurologic outcome; Graft material; Cranioplasty timing;
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