Observational studyJournal of anesthesia2025
The effect of obesity on optic nerve sheath diameter in patients undergoing laparoscopic gynecological surgery: a prospective observational study.
Observational study in Journal of anesthesia, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
Corrections and comments
- Commented on by
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposePneumoperitoneum and the steep Trendelenburg position during laparoscopic gynecological surgery may increase intracranial pressure, which can be estimated using ultrasound measurement of the optic nerve sheath diameter (ONSD). In this study, we evaluated the effect of obesity on ONSD in patients undergoing laparoscopic gynecological surgery.
methodsSixty-eight patients who underwent laparoscopic gynecological surgery were allocated to either the non-obese (n = 34) or obese (n = 34) groups. ONSD was assessed using ultrasound after anesthesia induction, at 30 and 60 min after pneumoperitoneum and Trendelenburg positioning, and at 10 and 60 min, and 24 h after desufflation and return to the supine position. Postoperative nausea and vomiting (PONV) and headache were evaluated 1 and 24 h after surgery.
resultsONSD increased significantly during pneumoperitoneum and Trendelenburg positioning in both groups (P < 0.001, respectively) and was higher in the obese group at each time point throughout and after surgery (P < 0.007, respectively). The increased ONSD during surgery returned to baseline 24 h after desufflation in the non-obese group, but not in the obese group. The incidence of PONV 1 h after surgery was significantly higher in the obese group than in the non-obese group (59% vs. 21%, respectively; P = 0.001). The incidence of PONV 24 h after surgery and postoperative headaches were not different between the two groups.
conclusionONSD was significantly higher in the obese group than in the non-obese group throughout and after laparoscopic gynecological surgery. The increased ONSD during surgery did not return to baseline even 24 h after desufflation in the obese group.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.