Effects of Menstrual Cycle on Optic Nerve Sheath Diameter in Patients Undergoing Laparoscopic Gynecologic Surgery
Summary
The National Institutes of Health registered observational study NCT07539831 on April 20, 2026. The study evaluates the effect of menstrual cycle phase (follicular vs. luteal) on optic nerve sheath diameter measurements in women undergoing elective laparoscopic gynecologic surgery. Researchers will assess perioperative ONSD measurements and postoperative outcomes including nausea, vomiting, and cognitive function.
What changed
ClinicalTrials.gov registered a new observational study examining whether hormonal variations during the menstrual cycle are associated with differences in intracranial pressure as reflected by optic nerve sheath diameter measurements. Patients are grouped by follicular or luteal phase and assessed perioperatively.
This study registration does not impose any compliance obligations. Healthcare institutions conducting similar research may find this relevant to their literature review protocols, but no regulatory action is required.
Archived snapshot
Apr 20, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Effects of Menstrual Cycle on Optic Nerve Sheath Diameter in Patients Undergoing Laparoscopic Gynecologic Surgery
Observational NCT07539831 Kind: OBSERVATIONAL Apr 20, 2026
Abstract
This observational study aims to evaluate the effect of menstrual cycle phase on optic nerve sheath diameter (ONSD) in women undergoing elective laparoscopic gynecologic surgery. Patients will be grouped according to menstrual cycle phase as follicular or luteal. ONSD measurements will be performed perioperatively, and postoperative nausea and vomiting as well as postoperative cognitive function will also be assessed. The study is designed to investigate whether hormonal variations during the menstrual cycle are associated with differences in intracranial pressure reflected by ONSD measurements and postoperative outcomes
Conditions: Menstrual Cycle, Optic Nerve Sheath Diameter, Postoperative Nausea and Vomiting
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