External Oblique Intercostal Plane Block

Vol 6 | Issue 2 | July-December 2025 | Page 00-00 | Rashmi Syal

DOI: https://doi.org/10.13107/ijra.2025.v06.i02.000

Open Access License: CC BY-NC 4.0

Copyright Statement: Copyright © 2025; The Author(s).

Submitted: 09-09-2025; Reviewed: 05-10-2025; Accepted: 17-11-2025; Published: 10-12-2025

Authors: Rashmi Syal [1]

[1] Department of Anaesthesia, Dr. S.N Medical College, Jodhpur, Rajasthan, India.

Address of Correspondence

Dr. Rashmi Syal,
Department of Anaesthesia, Dr. S.N Medical College, Jodhpur, Rajasthan, India.
Email: rashmisyal2006@gmail.com

Abstract

External plane fascial plane block is a newer block that targets lateral cutaneous and anterior cutaneous divisions of the thoracoabdominal intercostal nerves. The intended site of injection is the interfacial plane deep to the external oblique muscle and superficial to the underlying intercostal musculature, which extends longitudinally along the anterolateral thoracoabdominal wall. At the level of the sixth rib, a high-frequency linear ultrasound transducer is placed in the sagittal plane between the midclavicular and anterior axillary lines, with the orientation marker directed cranially. The needle is then advanced in-plane from a superomedial-to-inferolateral direction, with the skin entry point just medial to the anterior axillary line at a level cranial to the sixth rib.
Keywords: External oblique intercostal plane, Thoracoabdominal intercostal nerves, Local anaesthetic

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