• Hye Won Choi, Jung Won Choi, Ho Jun Seol, Do-Hyun Nam, Jung-Il Lee, and Doo-Sik Kong.
• Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School, of Medicine, Seoul, Republic of Korea.
• World Neurosurg. 2023 Jan 1; 169: e110e113e110-e113.

BackgroundPostoperative management following endoscopic endonasal surgery (EES) is important to prevent cerebrospinal fluid leak and preserve the integrity of the nasoseptal flap. No consensus regarding an optimal posture in the postoperative period has been established. We hypothesized that sinonasal pressure (SNP) can represent intracranial pressure affecting the sellar floor in the absence of the sellar bone after surgery. This study provides evidence for the effect of postural changes and recommends optimal posture to reduce SNP following EES.MethodsThe authors conducted a retrospective analysis of 50 patients who underwent reconstruction for skull base defects with nasoseptal flap after EES for resection of suprasellar tumor between March 2020 and August 2020. The Spiegelberg intracranial pressure probe was placed through the nostril over the nasoseptal flap. SNPs were measured in Fowler' (45° tilt) and supine positions, respectively, daily for the first 3 days immediately after EES.ResultsFor the first 3 days after surgery, the mean SNP in Fowler' position (24.82 mmHg; standard deviation, 12.23 mmHg) was lower than that in the supine position (28.42 mmHg; standard deviation, 12.33 mmHg) (P < 0.01). There were no significant differences in mean SNP for age, sex, tumor size, presence of hydrocephalus, and body mass index.ConclusionsThere was a significant correlation between Fowler' position and a decrease in SNP measurements. Placing a patient in Fowler' position after surgery can decrease the SNP. We recommend that patients should be placed in a Fowler' position as an optimal position after surgery.Copyright © 2022 Elsevier Inc. All rights reserved.

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