Abstract
Traditionally, ilioinguinal and iliohypogastric nerve blocks are performed with a single needle entry point 2 cm medial and 2 cm superior to the anterior superior iliac spine (ASIS). Local anesthetic is injected in the layers between (1) the external oblique muscle and the internal oblique muscles and (2) the internal oblique muscle and transversus abdominis muscles. These blocks will provide the largest component of surgical anesthesia and postoperative analgesia for operations in the inguinal region, albeit with the need for some supplemental infiltration for other innervation provided by contralateral branches and branches of the genitofemoral nerve (L1/2). These blocks will not anesthetize the spermatic cord or the extension of peritoneum overlying it. This is a relatively safe block which may be performed preoperatively for surgical anesthesia or postoperatively for pain management. An alternative to these blocks is a lateral transversus abdominis plane (TAP) block (see Chap. 30) to block the nerves proximal to where they leave the TAP.
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Suggested Reading
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Tsui, B.C.H. (2016). Ilioinguinal and Iliohypogastric Nerve Blocks. In: Tsui, B., Suresh, S. (eds) Pediatric Atlas of Ultrasound- and Nerve Stimulation-Guided Regional Anesthesia. Springer, New York, NY. https://doi.org/10.1007/978-0-387-79964-3_31
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DOI: https://doi.org/10.1007/978-0-387-79964-3_31
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