Evidence map›Paper›PMID 40361227›Full record

ReviewPerioperative medicine (London, England)2025

Effect of pressure-controlled ventilation and volume-controlled ventilation for laparoscopic surgery in the Trendelenburg position: a systematic review and meta-analysis.

Cui Wen, Yi Qi, Yingying Xiang, Qianyun Pang, Jingyu Xiao, Ran An

Abstract readReview
In one paragraph

Review in Perioperative medicine (London, England), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

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

  1. Pooled it
  2. Trial
  3. Trial
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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

6 authors.

Cui Wen *Department of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, 400030, China.
Yi Qi *Department of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, 400030, China.
Yingying Xiang *Department of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, 400030, China.
Qianyun PangDepartment of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, 400030, China.
Jingyu XiaoDepartment of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, 400030, China. jyxiao1989@outlook.com.
Ran AnDepartment of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, 400030, China. anran1011@163.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVolume-controlled ventilation (VCV) and pressure-controlled ventilation (PCV) are commonly used in laparoscopic surgery in the Trendelenburg position, and pressure-controlled ventilation volume guaranteed (PCV-VG) has been increasingly used recently. However, there is still no consensus on the optimal ventilation mode. Therefore, a systematic review and meta-analysis were conducted to compare the effects of different ventilation modes for laparoscopic surgery in the Trendelenburg position.

methodsMultiple databases were searched for randomized controlled trials published before December 2024 to compare the effects of PCV, PCV-VG, and VCV in patients in the Trendelenburg position who underwent laparoscopic surgery. The primary outcomes included peak airway pressure (Ppeak), plateau airway pressure (Pplat), dynamic compliance (Cdyn), and blood gas analysis.

resultsSixteen studies were included in this meta-analysis. PCV [Ppeak, 15‒40-min post-pneumoperitoneum and Trendelenburg position (T2): mean difference (MD) - 4.28, 95% confidence interval (CI) - 5.91 to - 2.64, P < 0.01; 60-min post-pneumoperitoneum and Trendelenburg position (T3): MD - 4.51, 95% CI - 5.41 to - 3.6, P < 0.01; 120-min post-pneumoperitoneum and Trendelenburg position (T4): MD - 5.63, 95% CI - 7.35 to - 3.91, P < 0.01; Cydn, T2: MD 3.15, 1.53 to 4.77, P = 0.0001; T3: MD 2.78, 95% CI 1.43 to 4.14, P < 0.01] and PCV-VG (Ppeak, T2: MD - 3.99, 95% CI - 7.2 to - 0.78, P = 0.01; T3: MD - 3.46, 95% CI - 6.5 to - 0.42, P = 0.03; Cydn, T3: MD 4.44, 95% CI 2.23 to 6.66, P < 0.01; T4: MD 3.61, 95% CI 1.31 to 5.91, P = 0.002) significantly reduced Ppeak and improved Cydn compared with VCV after pneumoperitoneum and Trendelenburg position. PaO

conclusionsOur meta-analysis suggests that in laparoscopic surgery in the Trendelenburg position, PCV or PCV-VG can provide a lower Ppeak and higher Cdyn throughout surgery but cannot offer better oxygenation than VCV. PCV or PCV-VG might be optimal for laparoscopic surgery in the Trendelenburg position.

Indexed as

Laparoscopic surgeryMeta-analysisVentilation mode

Identifiers

PMID40361227
PMCPMC12070765

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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.