Evidence map›Paper›PMID 29296094›Full record

ArticleJournal of pain research2018

Comparison of ultrasound-guided posterior transversus abdominis plane block and lateral transversus abdominis plane block for postoperative pain management in patients undergoing cesarean section: a randomized double-blind clinical trial study.

Seyed Hamid Reza Faiz, Mahmoud Reza Alebouyeh, Pooya Derakhshan, Farnad Imani, Poupak Rahimzadeh, Maryam Ghaderi Ashtiani

2 registry-linked trialsOpen access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of pain research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 33 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 2 pooled it
7.2field-weighted citation impact, top 2% 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.

NCT04279054 early_phase1completednot on this mapstarted 2020, after this paper: background citation

Decreased Neuraxial Morphine and Adjunctive Peripheral Nerve Blockade to Reduce Severity of Side Effects and Opioid Use After Cesarean Delivery

TypeinterventionalSponsorUniversity of Alabama at BirminghamRan2020 to 2023Enrolled87ConditionsAnesthesiaArmsMorphine Sulfate 150 mcg, Morphine Sulfate 50mcg
NCT07661576 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Targeted Management of Somatic Pain in Laparoscopic Cholecystectomy: A Prospective Comparison of Lateral and Subcostal TAP Block Approaches for Drain-Site Analgesia

TypeinterventionalSponsorTurgut Ozal UniversityRan2026 to 2027Enrolled88ConditionsPostoperative Pain After Laparoscopic CholecystectomyArmsBilateral Subcostal TAP Block, Lateral TAP Block Plus Contralateral Subcostal TAP Block
3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 2 syntheses or guidelines pooled it, 68 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Clinical Efficacy of Single-Journal of pain research · 2025
    Trial
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Trial
  9. Laparoscopic Posterior Versus Lateral Transversus Abdominis Plane Block in Gynecology.JSLS : Journal of the Society of Laparoendoscopic Surgeons
    Trial
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Risk factors for abdominal wall pseudohernia after percutaneous cryoablation of renal cell carcinoma.Wideochirurgia i inne techniki maloinwazyjne = Videosurgery and other miniinvasive techniques · 2022
    Article
  20. Article
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 at 1 institution in 1 country.

Seyed Hamid Reza FaizEndometriosis Research Center, Iran University of Medical Sciences, Tehran, Iran.
Mahmoud Reza AlebouyehAnesthesia Department, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Pooya DerakhshanAnesthesia Department, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Farnad ImaniPain Research Center, Iran University of Medical Sciences, Tehran, Iran.
Poupak RahimzadehPain Research Center, Iran University of Medical Sciences, Tehran, Iran.
Maryam Ghaderi AshtianiAnesthesia Department, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Iran University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDue to the importance of pain control after abdominal surgery, several methods such as transversus abdominis plane (TAP) block are used to reduce the pain after surgery. TAP blocks can be performed using various ultrasound-guided approaches. Two important approaches to do this are ultrasound-guided lateral and posterior approaches. This study aimed to compare the two approaches of ultrasound-guided lateral and posterior TAP blocks to control pain after cesarean section. MATERIALS AND

methodsIn this double-blind clinical trial study, 76 patients scheduled for elective cesarean section were selected and randomly divided into two groups of 38 and underwent spinal anesthesia. For pain management after the surgery, one group underwent lateral TAP block and the other group underwent posterior TAP block using 20cc of ropivacaine 0.2% on both sides. Pain intensity was evaluated based on Numerical Analog Scale (NAS) at rest and when coughing, 2, 4, 6, 12, 24 and 36 hours after surgery.

resultsThe pain at rest in the posterior group at all hours post surgery was lower than the lateral group, especially at 6, 12 and 24 hours after the surgery and the difference was statistically significant (

conclusionThe results of this study show that ultrasound-guided posterior TAP block compared with the lateral TAP block was more effective in pain control after cesarean section.

Indexed as

cesarean sectionlateral TAP blockposterior TAP blockropivacaineultrasound

Identifiers

PMID29296094
PMCPMC5741073
OpenAlexW2778611032

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.