Skip to main content
Erschienen in: Canadian Journal of Anesthesia/Journal canadien d'anesthésie 10/2022

23.08.2022 | Reports of Original Investigations

Novel external oblique muscle plane block for blockade of the lateral abdominal wall: a pilot study on volunteers

Erschienen in: Canadian Journal of Anesthesia/Journal canadien d'anesthésie | Ausgabe 10/2022

Einloggen, um Zugang zu erhalten

Abstract

Purpose

No 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.

Methods

This 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.

Results

The 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.

Conclusion

The 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.
Literatur
3.
Zurück zum Zitat Hebbard P, Fujiwara Y, Shibata Y, Royse C. Ultrasound-guided transversus abdominis plane (TAP) block. Anaesth Intensive Care 2007; 35: 616–7.PubMed Hebbard P, Fujiwara Y, Shibata Y, Royse C. Ultrasound-guided transversus abdominis plane (TAP) block. Anaesth Intensive Care 2007; 35: 616–7.PubMed
8.
Zurück zum Zitat Faiz SH, Alebouyeh MR, Derakhshan P, Imani F, Rahimzadeh P, Ashtiani MG. 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. J Pain Res 2017; 11: 5–9. https://doi.org/10.2147/jpr.s146970CrossRefPubMedPubMedCentral Faiz SH, Alebouyeh MR, Derakhshan P, Imani F, Rahimzadeh P, Ashtiani MG. 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. J Pain Res 2017; 11: 5–9. https://​doi.​org/​10.​2147/​jpr.​s146970CrossRefPubMedPubMedCentral
27.
Zurück zum Zitat Aikawa K, Yokota I, Maeda Y, Morimoto Y. Evaluation of sensory loss obtained by modified thoracoabdominal nerves block through perichondrial approach in patients undergoing gynecological laparoscopic surgery: a prospective observational study. Reg Anesth Pain Med 2022; 47: 134–5. https://doi.org/10.1136/rapm-2021-102870CrossRefPubMed Aikawa K, Yokota I, Maeda Y, Morimoto Y. Evaluation of sensory loss obtained by modified thoracoabdominal nerves block through perichondrial approach in patients undergoing gynecological laparoscopic surgery: a prospective observational study. Reg Anesth Pain Med 2022; 47: 134–5. https://​doi.​org/​10.​1136/​rapm-2021-102870CrossRefPubMed
Metadaten
Titel
Novel external oblique muscle plane block for blockade of the lateral abdominal wall: a pilot study on volunteers
Publikationsdatum
23.08.2022
Erschienen in
Canadian Journal of Anesthesia/Journal canadien d'anesthésie / Ausgabe 10/2022
Print ISSN: 0832-610X
Elektronische ISSN: 1496-8975
DOI
https://doi.org/10.1007/s12630-022-02310-4

Weitere Artikel der Ausgabe 10/2022

Canadian Journal of Anesthesia/Journal canadien d'anesthésie 10/2022 Zur Ausgabe

Update AINS

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.