Evidence map›Paper›PMID 42078455›Full record

Trial reportFrontiers in medicine2026

Efficacy of oxycodone in managing visceral pain among women undergoing repeat cesarean section: a randomized controlled trial.

Qiwei Chen, Shishi Hu, Jie Liu, Guangyou Duan, Mengjie Chen, Shiqi Li

Abstract readClinical Trial
In one paragraph

Trial report in Frontiers in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Qiwei ChenDepartment of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.
Shishi HuDepartment of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.
Jie LiuDepartment of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.
Guangyou DuanDepartment of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.
Mengjie ChenDepartment of Gynecology and Obstetrics, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.
Shiqi LiDepartment of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: The global cesarean section (CS) rate is on the rise, with ratio of repeat CS becoming more common in China following the two-child policy. Postoperative visceral pain, particularly intense in repeat CS parturients and exacerbated by oxytocin, remains inadequately managed. Oxycodone, acting via κ-opioid receptors, has shown promise in relieving visceral pain, but its efficacy in repeat CS populations is unclear, which was explored in this study. Methods: This randomized controlled trial enrolled 100 parturients undergoing elective repeat CS, randomized to patient-controlled intravenous analgesia (PCIA) with oxycodone (50 mg/100 ml) or sufentanil (100 μg/100 ml). Primary outcomes were maximum visceral pain Numerical Rating Scale (NRS) scores during 0-24 h postoperatively. Secondary outcomes included visceral pain NRS during oxytocin administration on postoperative days 1-2, postoperative inflammatory markers (neutrophil-to-lymphocyte ratio, NLR), time to autonomic activity and PCIA presses. This trial was registered with the Chinese Clinical Trial Registry (ChiCTR2400087624; July 31 2024). Results: Significantly lower maximum visceral pain NRS scores in the oxycodone group during 24h after surgery compared to sufentanil group (2.2 ± 0.6 Conclusion: In conclusion, oxycodone effectively alleviates postoperative visceral pain and mitigates inflammatory responses in repeat CS parturients, making it a preferred choice for postoperative analgesia in this population.

Indexed as

cesarean sectionneutrophil-to-lymphocyte ratio (NLR)numerical rating scale (NRS)oxycodonesufentanil

Identifiers

PMID42078455
PMCPMC13132862

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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.