Trial reportJournal of pain research2021
A Modified Approach Below the Lateral Arcuate Ligament to Facilitate the Subcostal Anterior Quadratus Lumborum Block.
Trial report in Journal of pain research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.
- Pooled it
- Anterior quadratus lumborum block at the lateral supra-arcuate ligament versus thoracic paravertebral block for postoperative analgesia after laparoscopic nephrectomy: a randomized non-inferiority trial.Annals of medicine · 2025Trial
- Modified versus traditional subcostal anterior quadratus lumborum block for postoperative analgesia after laparoscopic nephrectomy: a randomized-controlled study.Journal of anesthesia · 2025Trial
- Trial
- A novel regional anesthesia technique for retrograde intrarenal surgery in high-risk patients: a prospective observational study.BMC anesthesiology · 2026Observational
- Quadratus lumborum block at the lateral supra-arcuate ligament for postoperative analgesia: a protocol for a systematic review and meta-analysis.Annals of medicine · 2025Article
- Review
- Article
- Application of ultrasound-guided anterior quadratus lumborum block approach at the lateral supra-arcuate ligament in elderly patients undergoing colorectal cancer surgery.American journal of cancer research · 2024Article
- Modified subcostal approach to anterior quadratus lumborum block for managing postoperative pain in patients undergoing open nephrectomy.Journal of anesthesia, analgesia and critical care · 2023Article
- Evaluation of Sensory Loss and Postoperative Analgesia Obtained by Diaphragmatic Apposition Zone Block Under Direct Laparoscopic Visualization in Patients Undergoing Nephrectomy: A Descriptive Study.Journal of pain research · 2022Article
- Evaluation of Sensory Loss Obtained by Circum-Psoas Blocks in Patients Undergoing Total Hip Replacement: A Descriptive Pilot Study.Journal of pain research · 2022Article
- Supra-Arcuate Ligament Blocks: Anatomy, Mechanisms, and Techniques.Journal of pain research · 2021Review
- L3 paravertebral block combined with retro-psoas compartment block versus femoral nerve block for postoperative analgesia in total knee arthroplasty: A randomized controlled trial.Saudi journal of anaesthesiaArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe subcostal quadratus lumborum (QL) block was used in postoperative analgesia for abdominal surgery. However, it is difficult to precisely put the needle tip into the target fascia compartment. In the current study, we proposed a modified approach to facilitate the subcostal QL block. PATIENTS AND
methodsTwenty-four patients scheduled for laparoscopic renal surgery were enrolled. The modified QL block was placed preoperatively. The transducer was placed just laterally to the tip of L1 transverse process to perform the parasagittal scan. The needle was inserted in-plane and advanced toward the target compartment between the QL muscle and the anterior thoracolumbar fascia and just below the lateral arcuate ligament. The 20 mL of 0.5% ropivacaine was injected slowly if the saline spread cranially via the posterior pathway of lateral arcuate ligament was observed on the sonogram. Then, the paramedian transverse scanning at the level of T12-L1 was performed to observe the injectate diffusion. The dermatomal coverage of sensory block was tested at 5 min and 10 min after LA injections. The complications associated with the block were recorded.
resultsTwenty-three (95.8%) patients received the successful block. All patients achieved the sensory block dermatomes of T9-T12 and T6-L1, at 5 and 10 minutes after injection, respectively. The mean numbers of block dermatomes were 5.6±1.8 at 5 min and 6.5±2.2 at 10 min after injection. Two out of twenty-three (8.7%) patients achieved coverage as cephalad as T5 at 10 min after injections. The lunar-shaped spread of LA along the diaphragm into the T12 paravertebral space was observed in every patient. No complications occurred.
conclusionThe modified subcostal QL block has the advantages of clear sonoanatomy, rapid onset time, and consistent dermatomal coverage and provides a new choice for postoperative analgesia of abdominal surgery.
trial registrationChinese Clinical Trial Registry: ChiCTR2000029210.
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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.