Evidence map›Paper›PMID 33823210›Full record

Observational studyBrazilian journal of anesthesiology (Elsevier)

Intraocular pressure during robotic-assisted laparoscopic prostatectomy: a prospective observational study.

Yuriko Kondo, Noriyuki Echigo, Takahiro Mihara, Yukihide Koyama, Kosuke Takahashi, Kenta Okamura, Takahisa Goto

Abstract readObservational Study
PubMed Full text at PMC Publisher
In one paragraph

Observational study in Brazilian journal of anesthesiology (Elsevier). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. [Anesthesia for robot-assisted surgery].Die Anaesthesiologie · 2026
    Review
  5. Review
  6. Comprehensive perioperative eye protection.Brazilian journal of anesthesiology (Elsevier)
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Yuriko KondoYokohama Rosai Hospital, Department of Anesthesiology, Yokohama, Japan.
Noriyuki EchigoYokohama Rosai Hospital, Department of Anesthesiology, Yokohama, Japan.
Takahiro MiharaYokohama City University, Graduate School of Medicine, Department of Anesthesiology and Critical Care Medicine, Yokohama, Japan; YCU Center for Novel and Exploratory Clinical Trials, Yokohama City University Hospital, Education and Training Department, Yokohama, Japan; Yokohama City University, Graduate School of Data Science, Department of Health Data Science, Yokohama, Japan. Electronic address: mihara_t@yokohama-cu.ac.jp.
Yukihide KoyamaNippon Koukan Hospital, Department of Anesthesia, Kawasaki, Japan.
Kosuke TakahashiNihon University, School of Dentistry at Matsudo, Department of Maxillofacial Surgery, Tokyo, Japan; Yokohama Rosai Hospital, Department of Maxillofacial Surgery, Yokohama, Japan.
Kenta OkamuraYokohama City University, Graduate School of Medicine, Department of Anesthesiology and Critical Care Medicine, Yokohama, Japan.
Takahisa GotoYokohama City University, Graduate School of Medicine, Department of Anesthesiology and Critical Care Medicine, Yokohama, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesAlthough previous reports have shown intraocular pressure changes during robotic-assisted laparoscopic prostatectomy, they did not discuss the time course of changes or the timing of the largest change. We conducted this study to quantify pressure changes over time in patients assuming the steep Trendelenburg position during robotic-assisted laparoscopic prostatectomy.

methodsTwenty-one men were enrolled. Intraocular pressure was measured before anesthesia induction in the supine position (T0); 30 (T1), 90 (T2), and 150 minutes after assuming the Trendelenburg position (T3); and 30 minutes after reassuming the supine position (T4). End-tidal carbon dioxide and blood pressure were also recorded. To compare intraocular pressure between the time points, we performed repeated-measures analysis of variance. A mixed-effects multivariate regression analysis was conducted to adjust for confounding factors.

resultsThe mean (standard deviation) intraocular pressure was 18.3 (2.4), 23.6 (3.0), 25.1 (3.1), 25.3 (2.2), and 18.1 (5.0) mmHg at T0, T1, T2, T3, and T4, respectively. The mean intraocular pressure was higher at T1, T2, and T3 than at T0 (p < 0.0001 for all). There was no significant difference between T0 and T4, and between T3 and T2 (p > 0.99 for both).

conclusionsThe Trendelenburg position during robotic-assisted laparoscopic prostatectomy increased intraocular pressure. The increase was moderate at 90 minutes after the position was assumed, with the value being approximately 7 mmHg higher than the baseline value. The baseline intraocular pressure was restored at 30 minutes after the supine position was reassumed.

trial registrationUMIN ID 000014973 DATE OF REGISTRATION: August 27, 2014.

Indexed as

LaparoscopyRobotic Surgical ProceduresHumansIntraocular PressureMaleProstatectomyTonometry, OcularIntraocular pressureProstatectomyRobotic surgical proceduresTrendelenburg position

Identifiers

PMID33823210
PMCPMC9373603

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Registered trials

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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.