ArticleBMC anesthesiology2024
Evaluation of the effect of trendelenburg position duration on intracranial pressure in laparoscopic hysterectomies using ultrasonographic optic nerve sheath diameter measurements.
Article in BMC anesthesiology, 2024. 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 2 papers.
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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.
Evaluation of the Effect of Trendelenburg Position Time on Intracranial Pressure in Laparoscopic With Ultrasonographic Optic Nerve Sheath Diameter Measurement
Effect of Surgical Approach on Optic Nerve Sheath Diameter as a Surrogate Marker of Intracranial Pressure: A Comparison Between vNOTES and Total Laparoscopic Hysterectomy
Who cites it
2 citing papers in PubMed.
- Intraoperative optic nerve sheath diameter changes in vNOTES versus total laparoscopic hysterectomy: a prospective randomized study.Surgical endoscopy · 2026Trial
- Trial
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4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDuring laparoscopic surgery, pneumoperitoneum and Trendelenburg positioning applied to provide better surgical vision can cause many physiological changes as well as an increase in intracranial pressure. However, it has been reported that cerebral autoregulation prevents cerebral edema by regulating this pressure increase. This study aimed to investigate whether the duration of the Trendelenburg position had an effect on the increase in intracranial pressure using ultrasonographic optic nerve sheath diameter (ONSD) measurements.
methodsThe near infrared spectrometry monitoring of patients undergoing laparoscopic hysterectomy was performed while awake (T0); at the fifth minute after intubation (T1); at the 30th minute (T2), 60th minute (T3), 75th minute (T4), and 90th minute (T5) after placement in the Trendelenburg position; and at the fifth minute after placement in the neutral position (T6).
resultsThe study included 25 patients. The measured ONSD values were as follows: T0 right/left, 4.18±0.32/4.18±0.33; T1, 4.75±0.26/4.75±0.25; T2, 5.08±0.19/5.08±0.19; T3, 5.26±0.15/5.26±0.15; T4, 5.36±0.11/5.37±0.12; T5, 5.45±0.09/5.48±0.11; and T6, 4.9±0.24/4.89±0.22 ( p < 0.05 compared with T0). ). No statistical difference was detected in all measurements in terms of MAP, HR and ETCO2 values compared to the T0 value (p > 0.05).
conclusionsIt was determined that as the Trendelenburg position duration increased, the ONSD values increased. This suggests that as the duration of Trendelenburg positioning and pneumoperitoneum increases, the sustainability of the mechanisms that balance the increase in intracranial pressure becomes insufficient.
trial registrationThis study was registered at Clinical Trials.gov on 21/09/2023 (registration number NCT06048900).
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