ArticleCanadian journal of anaesthesia = Journal canadien d'anesthesie2022
Novel external oblique muscle plane block for blockade of the lateral abdominal wall: a pilot study on volunteers.
Article in Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07055438 (Analgesic Efficacy of Ultrasound Guided Bilateral External Oblique Intercostal Plane Block Versus Rectus Sheath Block in Upper Abdominal Surgeries), which is not on this map. Cited by 24 papers.
What it found
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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.
Analgesic Efficacy of Ultrasound Guided Bilateral External Oblique Intercostal Plane Block Versus Rectus Sheath Block in Upper Abdominal Surgeries: A Randomized Double-blinded Controlled Study
Who cites it
24 citing papers in PubMed, 29 citations in OpenAlex.
- Ultrasound guided external oblique intercostal plane block versus posterior transversus abdominis plane block for postoperative analgesia in adult patients undergoing open nephrectomy: a randomized trial.BMC anesthesiology · 2026Trial
- Trial
- Modified thoracoabdominal nerves block through perichondrial approach for laparoscopic cholecystectomy.Revista da Associacao Medica Brasileira (1992) · 2024Trial
- Modified thoracoabdominal nerve block through perichondrial approach (M-TAPA) vs local infiltration for pain management after laparoscopic cholecystectomy surgery: a randomized study.Journal of anesthesia · 2023Trial
- Thoracoabdominal nerves block through the perichondrial approach: a narrative review.Korean journal of anesthesiology · 2026Review
- Anatomical variations of the suprascapular artery: correlation between origin and course.Anatomical science international · 2026Article
- Re-modified thoracoabdominal nerves block through the perichondrial approach at the 9th intercostal space provides analgesia in the upper abdomen: a volunteer study.Journal of anesthesia · 2026Article
- Modified Thoracoabdominal Nerve Block Through the Perichondrial Approach versus Thoracic Epidural Analgesia for Postoperative Analgesia in Robot-Assisted Colorectal Surgery: A Retrospective Cohort Study.Local and regional anesthesia · 2026Article
- Analgesic efficacy of external oblique intercostal plane block in paediatric patients undergoing upper abdominal surgeries: A randomised controlled trial.Indian journal of anaesthesia · 2026Article
- Impact of external oblique intercostal plane block on postoperative pain and opioid consumption after laparoscopic sleeve gastrectomy: A systematic review and meta-analysis.Indian journal of anaesthesia · 2026Article
- Evaluation of the efficacy of M-TAPA and EXORA block application for analgesia after laparoscopic cholecystectomy: a prospective, single-blind, observational study.Korean journal of anesthesiology · 2025Observational
- A Comparison of Two Fascial Plane Blocks for Abdominal Analgesia in Laparoscopic Cholecystectomy Surgery (M-TAPA vs. External Oblique Intercostal Plane Block): A Prospective Randomized Study.Journal of clinical medicine · 2025Article
- Modified approach to external oblique intercostal block: a proof-of-concept pilot case series and anatomical evaluation -a case series.Korean journal of anesthesiology · 2025Article
- Modified thoracoabdominal nerves block through perichondrial approach for surgical patients: a scoping review.BMC anesthesiology · 2024Article
- The key to success in blocking lateral cutaneous branches with re-modified thoracoabdominal nerves block through perichondrial approach: a newly discovered space between the endothoracic fascia, diaphragm, and costodiaphragmatic recess.Journal of anesthesia · 2024Article
- Comparison of Analgesic Method in Laparoscopic Gastrectomy Using External Oblique Intercostal Block Versus Wound Infiltration: A Randomized Controlled Trial.Journal of clinical medicine · 2024Article
- In reply: Comments on blockade of thoracoabdominal nerves through the perichondrial approach.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2024Article
- Comments on blockade of thoracoabdominal nerves through the perichondrial approach.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2024Article
- Comparison of Quality of Recovery between Modified Thoracoabdominal Nerves Block through Perichondrial Approach versus Oblique Subcostal Transversus Abdominis Plane Block in Patients Undergoing Total Laparoscopic Hysterectomy: A Pilot Randomized Controlled Trial.Journal of clinical medicine · 2024Article
- Clinical Experience for Modified Thoracoabdominal Nerve Block Through Perichondrial Approach (M-TAPA) in Five Patients. Dermatomal Evaluation and Application of Different Volumes: A Case Series and Review of Literature.Turkish journal of anaesthesiology and reanimation · 2023Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeNo reports have described techniques to efficiently anesthetize the lateral cutaneous branches of the entire abdomen. The aim of this study was to investigate an effective procedure for blocking the lateral cutaneous branches in the abdominal region. We sought to describe the sensory distribution of the previously described thoracoabdominal nerve block through perichondrial approach (TAPA) and the novel costal and lateral external oblique muscle plane (EXOP) blocks in healthy volunteers.
methodsThis was a proof-of-concept pilot study that comprised ten volunteers with an American Society of Anesthesiologists Physical Status I. The participants underwent modified TAPA (M-TAPA), injection 2 of TAPA (injection into the anterior aspect of the 10th costal cartilage: I2-TAPA), costal EXOP, and lateral EXOP blocks with injection of 20 mL of ropivacaine 0.2% for each block. A pinprick test was performed one hour after injection and repeated at 30-min intervals until the effect of the nerve block disappeared.
resultsThe M-TAPA injection anesthetized the anterior branches from T6/7 to T11/12, whereas the I2-TAPA injection had no effect. Costal and lateral EXOP injections anesthetized the lateral cutaneous branches of T7-10 and T11-12, respectively.
conclusionThe results of this pilot study in ten healthy volunteers indicate that novel EXOP blocks involving local anesthetic injection superficial to the external oblique muscle efficiently anesthetize the lateral cutaneous branches of the thoracoabdominal nerves. Our study shows that it may be anatomically plausible for the combined use of these blocks to anesthetize the entire abdominal wall.
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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.