Evidence map›Paper›PMID 32989202›Full record

ArticleThe Korean journal of pain2020

The analgesic efficacy of a single injection of ultrasound-guided retrolaminar paravertebral block for breast surgery: a prospective, randomized, double-blinded study.

Boo-Young Hwang, Eunsoo Kim, Jae-Young Kwon, Ji-Youn Lee, Dowon Lee, Eun Ji Park, Taewoo Kang

Open access · diamondAbstract read
In one paragraph

Article in The Korean journal of pain, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.0field-weighted citation impact, top 13% 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.

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

9 citing papers in PubMed, 15 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

7 authors at 2 institutions in 1 country.

Boo-Young HwangDepartment of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea.ORCID https://orcid.org/0000-0001-6098-0627
Eunsoo KimDepartment of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea.ORCID https://orcid.org/0000-0001-9978-4973
Jae-Young KwonDepartment of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea.ORCID https://orcid.org/0000-0002-7472-8278
Ji-Youn LeeDepartment of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea.ORCID https://orcid.org/0000-0003-4741-8722
Dowon LeeDepartment of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea.ORCID https://orcid.org/0000-0001-5140-2358
Eun Ji ParkDepartment of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea.ORCID https://orcid.org/0000-0002-7967-1127
Taewoo KangDepartment of Busan Cancer Center (Breast Cancer Clinic), Pusan National University Hospital, Busan, Korea.ORCID https://orcid.org/0000-0002-6279-0904
Pusan National University · KRPusan National University Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe thoracic paravertebral block is an effective analgesic technique for postoperative pain management after breast surgery. The ultrasound-guided retrolaminar block (RLB) is a safer alternative to conventional paravertebral block. Thus, we assessed the analgesic efficacy of ultrasound-guided RLB for postoperative pain management after breast surgery.

methodsPatients requiring breast surgery were randomly allocated to group C (retrolaminar injection with saline) and group R (RLB with local anesthetic mixture). The RLB was performed at the level of T3 with local anesthetic mixture (0.75% ropivacaine 20 mL + 2% lidocaine 10 mL) under general anesthesia before the skin incision. The primary outcome was cumulative morphine consumption using intravenous patient-controlled analgesia (IV-PCA) at 24 hour postoperatively. The secondary outcomes were the visual analogue scale (VAS) scores at 1, 6, 24, and 48 hour postoperatively and the occurrence of adverse events and patient satisfaction after the surgery.

resultsForty-six patients were included, 24 in group C and 22 in group R. The cumulative morphine consumption using IV-PCA did not differ between the two groups (

conclusionsA single injection of ultrasound-guided RLB did not reduce postoperative analgesic requirements following breast surgery.

Indexed as

AnalgesicsAnestheticsBreast NeoplasmsInjectionsInterventionalLocalNerve BlockOpioidPainPostoperativeRopivacaineSpinalUltrasonographyVisual Analog Scale

Identifiers

PMID32989202
PMCPMC7532298
OpenAlexW3090062549

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

None linked

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.