Trial reportBMC anesthesiology2019
Analgesic effect of the ultrasound-guided subcostal approach to transmuscular quadratus lumborum block in patients undergoing laparoscopic nephrectomy: a randomized controlled trial.
Trial report in BMC anesthesiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05191966 (Comparison of the Effects of Subcostal Anterior Quadratus Lumborum Block and Thoracic Paravertebral Block on Postoperative Acute Pain in Laparoscopic Nephrectomy Surgery), which is not on this map. Cited by 37 papers, 4 of them syntheses that pooled 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.
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.
Comparison of the Effects of Subcostal Anterior Quadratus Lumborum Block and Thoracic Paravertebral Block on Postoperative Acute Pain in Laparoscopic Nephrectomy Surgery
Who cites it
37 citing papers in PubMed, 4 syntheses or guidelines pooled it, 71 citations in OpenAlex.
- Ultrasound-guided Quadratus Lumborum Block for Postoperative Analgesia in Patients Undergoing Nephrectomy: A Systematic Review and Meta-analysis.Annals of African medicine · 2026Pooled it
- Pooled it
- Ultrasound-guided quadratus lumborum block for postoperative analgesia in renal surgery: a systematic review and meta-analysis of randomized controlled trials.Journal of anesthesia · 2022Pooled it
- Effects of transversus abdominis plane block versus quadratus lumborum block on postoperative analgesia: a meta-analysis of randomized controlled trials.BMC anesthesiology · 2020Pooled it
- Trial
- Lateral quadratus lumborum block versus transversus abdominis plane block for perioperative analgesia in patients undergoing laparoscopic colorectal cancer surgery: a randomized, controlled clinical trial.BMC anesthesiology · 2025Trial
- Effects of Subcostal Anterior Quadratus Lumborum Block with and without Dexmedetomidine on Postoperative Rehabilitation in Patients Undergoing Laparoscopic Renal Surgery: A Prospective Double-Blinded Randomized Controlled Study.Drug design, development and therapy · 2023Trial
- Comparison of the Postoperative Analgesic Effects between Ultrasound-Guided Transmuscular Quadratus Lumborum Block and Thoracic Paravertebral Block in Laparoscopic Partial Nephrectomy Patients: A Randomized, Controlled, and Noninferiority Study.Pain research & management · 2023Trial
- Analgesic Effect of Ultrasound-Guided Anterior Quadratus Lumborum Block at the L2 Level in Patients Undergoing Laparoscopic Partial Nephrectomy: A Single-Center, Randomized Controlled Trial.Pain research & management · 2022Trial
- Transmuscular quadratus lumborum block for postoperative pain and recovery after laparoscopic adrenalectomy: a randomized controlled trial.BMC anesthesiology · 2021Trial
- Effect of quadratus lumborum block on postoperative cognitive function in elderly patients undergoing laparoscopic radical gastrectomy: a randomized controlled trial.BMC geriatrics · 2021Trial
- Evaluation of Analgesia Effect after Ultrasound-Guided Laparoscopic Renal Surgery.Computational and mathematical methods in medicine · 2021Trial
- A Modified Approach Below the Lateral Arcuate Ligament to Facilitate the Subcostal Anterior Quadratus Lumborum Block.Journal of pain research · 2021Trial
- Comparative Analysis of Quadratus Lumborum Versus Epidural Blocks for Postoperative Pain Management in Urologic Surgeries.Current pain and headache reports · 2026Review
- Analgesic Effect of Laparoscopic Versus Ultrasound-Guided Quadratus Lumborum Block in Patients Undergoing Laparoscopic Nephrectomy: A Randomized Controlled Clinical Trial.Pain and therapy · 2026Article
- Efficacy of the external oblique intercostal plane block for postoperative analgesia after laparoscopic radical nephrectomy.Turkish journal of medical sciences · 2026Article
- Analgesic effects of transversus abdominis plane and quadratus lumborum blocks are not clinically meaningful for laparoscopic nephrectomy: systematic review and network meta-analysis.The Korean journal of pain · 2025Article
- Postoperative Analgesic Effects of Anterior Quadratus Lumborum Block vs Intravenous Analgesics Administered to Donors and Recipients in Renal Transplantation Surgery: A Prospective Cohort Study.Annals of transplantation · 2025Article
- 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
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundQuadratus lumborum block (QLB) is an effective analgesia that lowers opioid consumption after lower abdominal and hip surgeries. The subcostal approach to transmuscular QLB is a novel technique that can provide postoperative analgesia by blocking more dermatomes. The aim of this study is to evaluate the efficacy and viability of subcostal approach to QLB after laparoscopic nephrectomy.
methodsSixty patients who underwent laparoscopic nephrectomy were randomly divided into the subcostal approach to QLB group (QLB group, n = 30) and the control group (C group, n = 30). All patients underwent ultrasound-guided subcostal approach to QLB in an ipsilateral parasagittal oblique plane at the L1-L2 level. The QLB group received 0.4 cc/kg of 0.3% ropivacaine, and the C group received 0.4 cc/kg of 0.9% saline. Postoperatively, a patient-controlled intravenous analgesic pump with sufentanil was attached to all the patients. The primary outcome was sufentanil consumption within the first 24 h after surgery. The secondary outcomes included the Ramsey sedation scale (RSS) scores and Bruggemann comfort scale (BCS) scores 6 h (T1), 12 h (T2), and 24 h (T3) after surgery, intraoperative remifentanil consumption, number of patients requiring rescue analgesia, time to recovery of intestinal function, mobilization time after surgery, and presence of side effects.
resultsSufentanil consumption within the first 24 h after surgery was significantly lower in the QLB group than in the C group (mean [standard deviation]: 34.1 [9.9] μg vs 42.1 [11.6] μg, P = .006). The RSS scores did not differ between the two groups, and the BCS scores of the QLB group at T1 and T2 time points was significantly higher than those of the C group(P<0.05). The consumption of remifentanil intraoperatively and the number of patients requiring rescue analgesia were significantly lower in the QLB group (P<0.05). Time to recovery of intestinal function and mobilization time after surgery were significantly earlier in the QLB group (P<0.05). The incidence of postoperative nausea and vomiting was significantly lower in the QLB group (P<0.05).
conclusionsThe ultrasound-guided subcostal approach to QLB is an effective analgesic technique in patients undergoing laparoscopic nephrectomy as it reduces the consumption of sufentanil postoperatively.
trial registrationChiCTR1800020296 0 (Prospective registered). Initial registration date was 22/12/2018.
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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.