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First received: June 01, 2026

Clinical Trial: Impact of Reverse Trendelenburg on ONSD in Obesity Surgery

Study Status: COMPLETED

Recruit Status: COMPLETED

Condition: Morbid Obesity

Study Type: INTERVENTIONAL


Official Title: Effect of Pre-pneumoperitoneum Reverse Trendelenburg Positioning on Optic Nerve Sheath Diameter During Bariatric Surgery: A Prospective Randomized Controlled Trial

Brief Summary: This prospective randomized controlled trial aims to investigate the effect of reverse Trendelenburg positioning applied before pneumoperitoneum on optic nerve sheath diameter (ONSD) and, consequently, intracranial pressure during laparoscopic bariatric surgery. Patients will be randomly assigned to two groups, and perioperative changes in ONSD will be compared between the groups. The primary hypothesis of the study is that applying the reverse Trendelenburg position before pneumoperitoneum may attenuate ONSD…

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