PMID- 32551920 OWN - NLM STAT- MEDLINE DCOM- 20210818 LR - 20210818 IS - 1945-8932 (Electronic) IS - 1945-8932 (Linking) VI - 35 IP - 1 DP - 2021 Jan TI - Using the Middle Turbinate to Protect the Skull Base in Endoscopic Transsphenoidal Surgery: A Cadaver Study. PG - 59-63 LID - 10.1177/1945892420933173 [doi] AB - Inadvertent intracranial injury from nasogastric tube (NGT) placement is a described and potentially fatal complication following endoscopic transsphenoidal hypophysectomy (TSH). This cadaver study assessed the role of middle turbinate (MT) preservation and medialization in preventing accidental skull base injury from NGT insertion after TSH. Methods: Standard approach for TSH was performed on 3 human cadavers. MTs were placed into neutral position (MTN), then medialized via suture pexy to the septum (MTP), and subsequently resected (MTR). After each stage, 3 blinded individuals passed a 10 F Dobhoff and a 16 F NGT on each side of each cadaver (5 passes per side). Using endoscopic visualization, each pass was scored by a blinded reviewer based on the first contact point of the tube (0 = nasopharynx, 1 = inferior sphenoid face, 2 = sphenoid sinus), with higher scores suggestive of increased risk of intracranial injury. Results: There were 270 Dobhoff and 270 NGT passes scored. Data was divided into 3 groups based on presence and position of the MT. Significant differences were demonstrated between all three groups [one-way ANOVA: Dobhoff F(2,267) = 6.981, p = 0.001], [NGT F(2,267) = 17.582, p < 0.001]. There were significant differences between means for MTN versus MTP groups [Dobhoff (0.43 vs 0.22, p = 0.007), NGT (0.73 vs 0.28, p < 0.001)] and MTP versus MTR groups [Dobhoff (0.22 vs 0.55, p < 0.001), NGT (0.28 vs 0.81, p < 0.001)], indicating that the presence and position of the MT can significantly affect the accessibility of the sphenoid sinus interior after TSH. There was a trend toward lower means in the MTN group compared to the MTR group. Conclusion: MT preservation and deliberate medialization against the septum may reduce risk of inadvertent intracranial NGT injury in postop TSH patients. This simple maneuver should be considered in all routine TSH procedures. FAU - Shah, Janki AU - Shah J AUID- ORCID: 0000-0001-6172-6508 AD - Section of Rhinology, Sinus, and Skull Base Surgery, Head and Neck Institute, Cleveland Clinic, Cleveland, Ohio. FAU - Tang, Dennis AU - Tang D AUID- ORCID: 0000-0003-2315-9930 AD - Section of Rhinology, Sinus, and Skull Base Surgery, Head and Neck Institute, Cleveland Clinic, Cleveland, Ohio. FAU - Grafmiller, Kevin AU - Grafmiller K AUID- ORCID: 0000-0001-9238-6569 AD - Section of Rhinology, Sinus, and Skull Base Surgery, Head and Neck Institute, Cleveland Clinic, Cleveland, Ohio. FAU - Cappello, Zachary J AU - Cappello ZJ AD - Department of Otolaryngology-Head and Neck Surgery, Charlotte Eye, Ear, Nose and Throat, Charlotte, North Carolina. FAU - Roxbury, Christopher AU - Roxbury C AD - Rhinology and Endoscopic Skull Base Surgery, Department of Surgery, Section of Otolaryngology-Head and Neck Surgery, University of Chicago Medicine and Biological Sciences, Chicago, Illinois. FAU - Sindwani, Raj AU - Sindwani R AD - Section of Rhinology, Sinus, and Skull Base Surgery, Head and Neck Institute, Cleveland Clinic, Cleveland, Ohio. AD - Minimally Invasive Cranial Base and Pituitary Surgery, Rosa Ella Burkhardt Brain Tumor & Neuro-Oncology Center, Cleveland Clinic, Cleveland, Ohio. LA - eng PT - Journal Article DEP - 20200619 PL - United States TA - Am J Rhinol Allergy JT - American journal of rhinology & allergy JID - 101490775 SB - IM MH - Cadaver MH - *Endoscopy MH - Humans MH - Skull Base/surgery MH - Sphenoid Sinus/surgery MH - *Turbinates OTO - NOTNLM OT - Dobhoff OT - cadaver OT - complication OT - endoscopic OT - inadvertent OT - intracranial placement OT - middle turbinate OT - nasogastric tube OT - skull base protection OT - transsphenoidal hypophysectomy EDAT- 2020/06/20 06:00 MHDA- 2021/08/19 06:00 CRDT- 2020/06/20 06:00 PHST- 2020/06/20 06:00 [pubmed] PHST- 2021/08/19 06:00 [medline] PHST- 2020/06/20 06:00 [entrez] AID - 10.1177/1945892420933173 [doi] PST - ppublish SO - Am J Rhinol Allergy. 2021 Jan;35(1):59-63. doi: 10.1177/1945892420933173. Epub 2020 Jun 19.