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Comparison of Craniocaudal Spread of Lumbar Erector Spinae Plane Block With Two Volumes of Local Anesthetics

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Author(s)
Ji Hoon HongJi Hoon ParkJin Woo Shim
Keimyung Author(s)
Park, Ji Hoon
Department
Dept. of Anesthesiology & Pain Medicine (마취통증의학)
Journal Title
Pain Physician
Issued Date
2023
Volume
26
Issue
3
Keyword
intravascular injectionpsoas musclespread levelErector spinae plane block
Abstract
Background:
The erector spinae plane block (ESPB) is a less invasive, safer, and technically easier procedure compared to the conventional neuraxial technique. Although the ESPB is a favored and easy technique compared to neuraxial block, there is no study with a large number of patients describing the exact spread level of injected local anesthetics.

Objectives:
The purpose of this study was to identify ESPB spread in the craniocaudal direction and the incidence of spread into the epidural space, psoas muscle, and intravascular system.

Study design:
Prospective design.

Setting:
A tertiary university hospital, pain clinic.

Methods:
Right- or left-sided ESPBs (170 at L4) with fluoroscopy subsequent to ultrasound guidance due to acute or subacute low back pain were included. In this study, 10 mL (ESPB 10 mL group, contrast medium 5 mL) or 20 mL (ESPB 20 mL group, contrast medium 7 mL) of a local anesthetic mixture was injected. After confirming a successful interfascial plane spreading under ultrasound guidance, the remaining local anesthetic was injected under fluoroscopic guidance. The spread level of ESPB in the craniocaudal direction and the occurrence of injectate into the epidural space or psoas muscle was assessed using the saved fluoroscopic images. These images were compared between the ESPB 10 mL and ESPB 20 mL groups. Also, the presence or absence of intravascular injection during ESPB was assessed and compared between the ESPB 10 mL and ESPB 20 mL groups.

Results:
The ESPB 20 mL group had a more extensive caudal distribution of contrast medium than the ESPB 10 mL group. Also, the total number of lumbar vertebral segments was significantly higher in the ESPB 20 mL group than that of the ESPB 10 mL group (1.7 ± 0.4 vs 2.1 ± 0.4, P < 0.001). Among all injections performed in this study, epidural, psoas muscle, and intravascular injections occurred in 2.9%, 5.9%, and 12.9%, respectively.

Limitations:
Only the craniocaudal direction was evaluated without evaluating the spread pattern in the medial to lateral direction.

Conclusion:
The ESPB 20 mL group showed a more extensive distribution of contrast medium than that of the ESPB 10 mL group. Inadvertent injections into the epidural space, psoas muscle, and intravascular system were observed. Among them, intravascular system injections were found to be the most common (12.9%).
Keimyung Author(s)(Kor)
박지훈
Publisher
School of Medicine (의과대학)
Type
Article
ISSN
1533-3159
Source
https://www.painphysicianjournal.com/linkout?issn=&vol=26&page=265
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/45018
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Anesthesiology & Pain Medicine (마취통증의학)
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