Evidence map›Paper›PMID 34050798›Full record

Trial reportJournal of anesthesia2021

Accuro ultrasound-based system with computer-aided image interpretation compared to traditional palpation technique for neuraxial anesthesia placement in obese parturients undergoing cesarean delivery: a randomized controlled trial.

Xiu Ni, Meng-Zhu Li, Shuang-Qiong Zhou, Zhen-Dong Xu, Yue-Qi Zhang, Yi-Bing Yu, Jing Su, Li-Min Zhang, Zhi-Qiang Liu

Registry-linked trialAbstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Journal of anesthesia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07669441 (Early Preprocedural Ultrasound Versus Landmark Palpation for Site Identification in Labour Epidural Analgesia), which is not on this map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 5% of its field
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.

NCT07669441 nacompletednot on this mapstarted 2026, after this paper: background citation

Early Preprocedural Ultrasound Versus Landmark Palpation for Site Identification in Labour Epidural Analgesia: A Randomised Controlled Trial

TypeinterventionalSponsorUniversity Medical Center Ho Chi Minh City (UMC)Ran2026 to 2026Enrolled100ConditionsLabor Pain, Epidural Analgesia for Labour and Delivery, Neuraxial UltrasoundArmsPreprocedural Spinal Ultrasound, Conventional Landmark Palpation
3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Xiu NiDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Meng-Zhu LiDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Shuang-Qiong ZhouDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Zhen-Dong XuDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Yue-Qi ZhangDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Yi-Bing YuDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Jing SuDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Li-Min ZhangDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Zhi-Qiang LiuDepartment of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China. drliuzhiqiang@163.com.
Shanghai First Maternity and Infant Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeRecently, a new handheld ultrasound-based device, called Accuro, has been commercialized with a real-time automated interpretation of lumbar ultrasound images. We hypothesized that the handheld ultrasound device would improve the efficacy and safety of combined spinal-epidural anesthesia (CSEA) for cesarean delivery in obese parturients.

methodsEighty parturients with a body mass index > 30 kg∙m

resultsCompared to the palpation group, the first insertion success rate was significantly higher (72.5% vs. 40.0%; P = 0.003), and time taken to identify the needle puncture site was less (30 [26-36] vs. 39 [32-49] seconds; P = 0.001) in the ultrasound group. The rate of parturients who required needle redirections (40.0% vs. 72.5%; P = 0.003) and the incidence of paresthesia were both lower (7.5% vs. 45.0%; P < 0.001). The other outcomes had no significant difference between groups. The mean difference between the epidural depth measured by the handheld ultrasound and needle depth was - 0.29 cm [95% limit of agreement, - 0.52 to - 0.05].

conclusionsOur study suggests using the Accuro ultrasound device can enhance the efficacy and safety of CSEA in obese parturients when executed by experienced anesthesiologists, and its automated estimation of epidural depth is accurate.

Indexed as

Anesthesia, EpiduralAnesthesia, ObstetricalAnesthesia, SpinalComputersEpidural SpaceFemaleHumansObesityPalpationPregnancyUltrasonography, InterventionalAccuro ultrasoundNeuraxial anesthesiaObese

Identifiers

PMID34050798
OpenAlexW3164621590

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.