ArticleJournal of pain research2021
Comparison of Analgesic Efficacy of Erector Spinae Plane Block and Posterior Quadratus Lumborum Block in Laparoscopic Liver Resection: A Randomized Controlled Trial.
Article in Journal of pain research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05845788 (Comparison of the Intraoperative and Postoperative Effects of Ultrasound-guided Erector Spina Plane Block and Posterior Quadratus Lumborum Block in Patients Undergoing Lumbar Stabilization Surgery), which is not on this map. Cited by 17 papers, 3 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 Intraoperative and Postoperative Effects of Ultrasound-guided Erector Spina Plane Block and Posterior Quadratus Lumborum Block in Patients Undergoing Lumbar Stabilization Surgery
Who cites it
17 citing papers in PubMed, 3 syntheses or guidelines pooled it, 40 citations in OpenAlex.
- Comparison of the analgesic effects of ultrasound-guided erector spinae plane block and quadratus lumborum block: a systematic review and meta-analysis.Frontiers in pharmacology · 2025Pooled it
- A comparison of regional anesthesia techniques for pain management in patients undergoing liver surgery: a network meta-analysis.Frontiers in medicine · 2025Pooled it
- Erector spinae plane block for laparoscopic surgeries: a systematic review and meta-analysis.BMC anesthesiology · 2024Pooled it
- Erector spinae plane block versus transversus abdominis plane block with rectus sheath block for postoperative analgesia in laparoscopic hepatectomy: a randomized clinical trial.BMC anesthesiology · 2025Trial
- Short-Term Pharmacokinetics of Ropivacaine in Arterial Plasma During Erector Spinae Plane Block in Thoracic and Cardiac Surgery.Pharmaceutics · 2026Article
- Comparative Efficacy of Regional Analgesic Interventions in Open versus Laparoscopic Hepatic Surgery: A Network Meta-Analysis.Journal of pain research · 2026Review
- Erector Spinae Plane Block for Percutaneous Transhepatic Biliary Drainage: A Comparative Analysis.Cardiovascular and interventional radiology · 2025Article
- Local anesthetic dosing for fascial plane blocks to avoid systemic toxicity: a narrative review.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2025Review
- Multidisciplinary Postoperative Ileus Management: A Narrative Review.Medicina (Kaunas, Lithuania) · 2025Review
- Effect of Intraoperative Nefopam on Postoperative Analgesia in Living Liver Donors Undergoing Laparoscopic Hepatectomy with Transversus Abdominis Plane Block: A Propensity Score-Matched Study.Life (Basel, Switzerland) · 2025Article
- Research progress on the application of fascial plane blocks in postoperative pain management in spinal surgery.Frontiers in medicine · 2025Review
- Erector Spinae Plane Block versus Quadratus Lumborum Block for Postoperative Analgesia after Laparoscopic Resection of Colorectal Cancer: A Prospective Randomized Study.Anesthesiology research and practice · 2024Article
- Analgesic efficacy of an opioid-free postoperative pain management strategy versus a conventional opioid-based strategy following open major hepatectomy: an open-label, randomised, controlled, non-inferiority trial.EClinicalMedicine · 2023Article
- Article
- Quadratus Lumborum Blockade for Postoperative Analgesia in Infants and Children Following Colorectal Surgery.Journal of clinical medicine research · 2023Article
- Comparing Analgesic Efficacy of Regional Block Techniques After Laparoscopic Liver Resection: In Reply [Response to Letter].Journal of pain research · 2022Article
- Comparing Analgesic Efficacy of Regional Block Techniques After Laparoscopic Liver Resection [Letter].Journal of pain research · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeUltrasound-guided fascial plane blocks, including the erector spinae plane (ESP) and quadratus lumborum (QL) blocks, provide effective postoperative abdominal analgesia. However, there is limited evidence on the analgesic efficacy of ESP and QL blocks after liver surgery. Therefore, we aimed to compare the cumulative opioid consumption between the ESP and QL blocks in patients with hepatocellular carcinoma undergoing laparoscopic liver resection. PATIENTS AND
methodsEighty-eight patients scheduled to undergo laparoscopic liver resection were randomized to receive bilateral single injection of ESP block at T8 (ESP group) or bilateral single injection of posterior QL block (QL group; 20 mL of 0.375% ropivacaine for each side, ie, total 150 mg of ropivacaine), in addition to intravenous (IV) fentanyl patient-controlled analgesia and multimodal analgesia. The primary outcome was cumulative opioid consumption over the first 24 h, expressed as IV morphine equivalents. Secondary outcomes included serial plasma ropivacaine concentrations, pain scores, time to first flatus, and Quality of Recovery-15 scores.
resultsEighty-five patients were analyzed (ESP group, n = 42; QL group, n = 43). Cumulative 24-h opioid consumption was similar between the ESP and QL groups (41.4 ± 22.6 mg vs 44.2 ± 20.0 mg, mean difference (QL-ESP), 2.8 mg, 95% confidence interval, -6.4 to 12 mg, p > 0.99). There were no significant differences in resting pain scores at 24, 48 and 72 h postoperatively or recovery outcomes. The peak plasma ropivacaine concentration 30 min after injection was significantly higher in the ESP group (1.5 ± 0.3 µg/mL) than in the QL group (1.3 ± 0.5 µg/mL, p = 0.035); however, both were lower than the arterial threshold value of systemic toxicity (4.3 µg/mL).
conclusionESP and QL blocks provided similar postoperative analgesia in patients undergoing laparoscopic liver resection.
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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.