Layered sellar reconstruction with avascular free grafts: Acceptable alternative to the nasoseptal flap for repair of low-volume intraoperative cerebrospinal fluid leak

Christopher R. Roxbury, Tiffany Saavedra, Murugappan Ramanathan, Michael Lim, Masaru Ishii, Gary L Gallia, Douglas D. Reh

Research output: Contribution to journalArticle

Abstract

Background: Although the nasoseptal flap has become the method of choice for reconstruction of intraoperative cerebrospinal fluid (CSF) leak in endoscopic minimally invasive surgery of the skull base, layered avascular graft techniques, including allografts and middle turbinate mucosal autografts, may provide comparable reconstructive success with decreased nasal morbidity. Objective: To describe a method of reconstruction of intraoperative CSF leak in endoscopic surgery of the sella turcica and analyze its postoperative success rate and associated comorbidities. Methods: A retrospective review of expanded endonasal sellar tumor resections from 2008-2014 was performed, and cases of layered intraoperative skull base reconstruction with avascular free grafts were identified. Demographic factors and comorbidities that predisp reconstruction failure (obstructive sleep apnea, obesity) were determined. Reconstruction-related nasal complications were a identified. Pos operative CSF leak rate was determined, and statistical analysis was performed to identify predictive factors for reconstructive failure. Results: Seventy-three cases were identified. Layered closure with avascular free grafts was performed. There were five cases of postoperative CSF leak (6.85%). The mean follow-up was 19 months (range, 1-76 months). Intraoperative high-f CSF leak was a significant predictor of reconstruction failure on univariate (odds ratio 22 [95% confidence interval, 2.26-214]; p = 0.008) and multivariate analysis (odds ratio 33.6 [95% confidence interval, 2.30-492]; p = 0.010). There were no significant differences in postoperative leak rates among bony overlay graft types. There were five patients (7.9%) who experienced persistent crusting after surgery. There were no significant differences in crusting rates between allograft and m al grafts. There were no postoperative mucoceles. Conclusion: In cases of low-volume intraoperative CSF leak, layered skull base repair with avascular free grafts was an acceptable alternative to the nasoseptal flap, which may reduce prolonged sinonasal healing and donor-site morbidities.

Original languageEnglish (US)
Pages (from-to)367-371
Number of pages5
JournalAmerican Journal of Rhinology and Allergy
Volume30
Issue number5
DOIs
StatePublished - Sep 1 2016

ASJC Scopus subject areas

  • Immunology and Allergy
  • Otorhinolaryngology

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