Trial reportPloS one2026
Low pressure (8 mmHg) pneumoperitoneum does not significantly reduce postoperative visual analog scale score after laparoscopic cholecystectomy: Randomized trial.
Trial report in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06685250 (Randomized Controlled Trial Comparing Low), which is not on this map. Not yet cited in PubMed.
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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.
Randomized Controlled Trial Comparing Low (8 MmHg) Vs. Standard (14 MmHg) CO2 Insufflation Pressure on Postoperative Pain in Patients Undergoing Laparoscopic Cholecystectomy
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Authors and funding
9 authors.
Funding
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Abstract
backgroundLow-pressure pneumoperitoneum (LPP) has been proposed to improve postoperative pain in laparoscopic surgery. This randomized controlled trial (RCT) aimed to evaluate the impact of LPP versus standard-pressure pneumoperitoneum (SPP) on postoperative pain and surgical outcomes during laparoscopic cholecystectomy.
methodsA randomized, controlled, double-blind trial was performed between November 12, 2024 and December 31, 2025. Patients scheduled for elective laparoscopic cholecystectomy (LC) were randomized into two groups: LPP group (8 mmHg) versus SPP group (14 mmHg). The primary outcome was postoperative pain assessed by the Visual Analogue Scale (VAS) at 6 hours. Secondary outcomes included operative time, analgesic consumption, postoperative nausea and vomiting (PONV), and surgical complications. Data were analyzed using an intention-to-treat approach. This trial has been registered at ClinicalTrials.gov (NCT06685250) on November 11, 2024.
resultsOne hundred sixty consecutive patients were enrolled. There was no statistically significant difference in median VAS pain scores at 6 hours (3 vs. 4; p = 0.221), 12 hours (2 vs. 3; p = 0.074), or 24 hours (1 vs. 2; p = 0.128) postoperatively. However, the mean consumption of paracetamol during the first 24 hours was significantly lower in the LPP group compared to the SPP group (1.04 ± 0.906 vs. 1.35 ± 0.873; p = 0.014). Operative times were similar (59.9 ± 27.5 vs. 58.2 ± 22.4 minutes; p = 0.880). No conversion to laparotomy or major morbidities were recorded.
conclusionLPP (8 mmHg) was feasible without increasing operative duration. It did not show a statistically significant reduction in VAS pain scores at 6 hours. Larger studies are required to confirm safety equivalence regarding rare surgical complications.
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