Trial reportSurgical endoscopy2016
Impact of controlled intraabdominal pressure on the optic nerve sheath diameter during laparoscopic procedures.
Trial report in Surgical endoscopy, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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.
The Effect of Pneumoperitoneum Timing on Intracranial Pressure in Laparoscopic Cholecystectomy: Before or After Reverse Trendelenburg Position
Comparison of the Effects of Extraperitoneal and Transperitoneal Laparoscopic Surgeries on Intracranial Pressure: A Prospective Clinical Study
Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.
- Ultrasonographic optic nerve sheath diameter for predicting elevated intracranial pressure during laparoscopic surgery: a systematic review and meta-analysis.Surgical endoscopy · 2018Pooled it
- Effects of Pneumoperitoneum Pressure on Optic Nerve Sheath Diameter, Cerebral Oxygenation, and Postoperative Recovery During Laparoscopic Sleeve Gastrectomy: A Randomized Controlled Trial.Obesity surgery · 2026Trial
- Reverse Trendelenburg position applied prior to pneumoperitoneum prevents excessive increase in optic nerve sheath diameter in laparoscopic cholecystectomy: randomized controlled trial.Journal of clinical monitoring and computing · 2021Trial
- The effects of positive end-expiratory pressure (PEEP) application on optic nerve sheath diameter in patients undergoing laparoscopic cholecystectomy: a randomized trial.Brazilian journal of anesthesiology (Elsevier)Trial
- Ultrasound measurement of the optic nerve and its sheath using the CLOSED protocol: comparison with MRI in a porcine in-vivo model.BMC veterinary research · 2026Article
- Effects of abdominoplasty on intra ocular pressure and optic disc diameter.International ophthalmology · 2025Article
- Deep learning based optic nerve sheath diameter characterization and structure quantification on transorbital ultrasound images.Frontiers in medicine · 2025Article
- Optic nerve sheath diameter measurement for prediction of postdural puncture headache.Journal of clinical monitoring and computing · 2024Article
- Assessment of intracranial pressure with ultrasonographic measurement of optic nerve sheath diameter on patients undergoing suspension direct laryngoscopy.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2023Observational
- Role of the optic nerve sheath diameter in the assessment of the effectiveness of decompressive surgery after malignant middle cerebral artery infarction.Arquivos de neuro-psiquiatria · 2022Article
- Effect of dexmedetomidine on intracranial pressure in patients undergoing gynecological laparoscopic surgery in Trendelenburg position through ultrasonographic measurement of optic nerve sheath diameter.American journal of translational research · 2022Article
- The significance of intra-abdominal pressure in neurosurgery and neurological diseases: a narrative review and a conceptual proposal.Acta neurochirurgica · 2019Review
- Ultrasonography Assessments of Optic Nerve Sheath Diameter as a Noninvasive and Dynamic Method of Detecting Changes in Intracranial Pressure.JAMA ophthalmology · 2018Article
- The effect of robotic surgery on intraocular pressure and optic nerve sheath diameter: a prospective study.Brazilian journal of anesthesiology (Elsevier)Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAcute elevations of intraabdominal pressure (IAP) are seen in many clinical scenarios with a consequent elevation in intracranial pressure (ICP). With the optic nerve sheath (ONS) being a part of the dura mater and the optic nerve surrounded by cerebral spinal fluid, a change in pressure within the subarachnoid space would be detected by ultrasonography, and invasive methods could be avoided. The study objective was to evaluate ultrasonographic modifications observed on the optic nerve sheath diameter during acute elevations of IAP in patients undergoing laparoscopic procedures. STUDY
designWe prospectively collected data from patients who underwent laparoscopic procedures between July and August 2013. The optic nerve sheath diameter was measured sagittally with a 12-MHz transducer. The measurements were obtained at baseline, 15 and 30 min, and at the end of surgery.
resultsThere were 16 females (36.4%) and 28 males (63.6%), with a mean age of 44.22 ± 10.44 years (range 23-66) and body mass index of 29.45 ± 6.53 kg/m(2) (range 21-39). The mean optic nerve sheath diameter was 4.8 ± 1.0 mm at baseline, 5.5 ± 1.1 mm at 15 min, 5.9 ± 1.0 mm at 30 min, and 5.1 ± 1.2 mm after deflation of pneumoperitoneum. The diameter increased significantly at 15 min by a median of 0.6 mm (interquartile range 0.3, 0.8; p < 0.0001) and at 30 min by a median of 1.0 mm (interquartile range 0.7, 1.4; p < 0.0001), returning close to baseline after surgery.
conclusionThe acute elevation in IAP during laparoscopy significantly increased the optic nerve sheath diameter. The changes in the ONSD reflect a temporary and reversible increase in the ICP due to the acute elevation of IAP.
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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.