Trial reportBMC anesthesiology2026
Effects of different pneumoperitoneum pressures on the upper airway assessed by ultrasonography: a prospective, randomized, observer-blinded clinical study.
Trial report in BMC anesthesiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07021482 (Ultrasonographic Assessment of Airway Edema Induced by Intra-abdominal Pressure During Laparoscopic Cholecystectomy), which is not on this map. Cited by 1 paper.
What it found
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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.
Ultrasonographic Assessment of Airway Edema Induced by Intra-abdominal Pressure During Laparoscopic Cholecystectomy: A Prospective, Double-Blind, Randomized Study
Who cites it
1 citing paper in PubMed.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThis study aimed to evaluate the effects of low-pressure (10 mmHg) and standard-pressure (14 mmHg) pneumoperitoneum on upper airway dimensions during laparoscopic cholecystectomy performed in the reverse Trendelenburg position, using bedside ultrasonography.
methodsIn this prospective, randomized, observer-blinded study, 76 ASA I–II patients undergoing elective laparoscopic cholecystectomy were allocated to either 10 mmHg or 14 mmHg pneumoperitoneum. Upper airway parameters—including lateral pharyngeal wall (LPW) thickness, tongue thickness and width, parapharyngeal tissue thickness, and midsagittal tongue area—were measured at five time points (T0–T4). Perioperative data and postoperative respiratory complications (stridor, desaturation, re-intubation) were also assessed.
resultsBaseline characteristics were comparable between groups. All upper airway measurements increased over time, with significantly greater changes in the 14 mmHg group (mean LPW: 12.3 ± 1.1 mm vs. 11.2 ± 0.7 mm; p < 0.001). Group, time, and group*time interactions were significant for all sonographic parameters (all p < 0.001). Early postoperative respiratory complications were infrequent and similar between groups.
conclusionsIn summary, standard-pressure pneumoperitoneum (14 mmHg) was associated with more pronounced ultrasonographic changes in upper airway anatomy compared with low pressure (10 mmHg). This was not accompanied by statistically significant differences in early postoperative respiratory complications between groups.
trial registrationClinicalTrials.gov (NCT07021482), registered on June 05, 2025.
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