Anesthesia, Local; Ultrasonography; analgesia; Anesthesiology and Pain Medicine
Abstract :
[en] [en] BACKGROUND: Current understanding of the mechanism of action of the pericapsular nerve group (PENG) block is primarily based on cadaver studies. We performed an imaging study in patients undergoing hip surgery to enhance the understanding of the analgesic mechanisms following a PENG block.
MATERIALS AND METHODS: 10 patients scheduled for hip surgery received an ultrasound-guided PENG block with 18 mL of 0.5% ropivacaine mixed with 2 mL of a contrast agent. After completion of the block, a high-resolution CT scan was performed to obtain a three-dimensional reconstruction of the injectate's dispersion.
RESULTS: The CT imaging revealed that injectate was mainly confined to the epimysium of the iliacus and the psoas muscle, with a minor spread to the hip capsule. Contrast dye was detected within the iliacus and/or the psoas muscle in all patients. No observed spread to either the subpectineal plane or the obturator foramen was detected.
CONCLUSION: Our study suggests that the analgesic effect of the PENG block may be related to the block of the branches of the femoral nerve traveling within the iliopsoas muscle without a spread pattern commensurate with the block of the obturator nerve.
TRIAL REGISTRATION NUMBER: ClinicalTrials.gov Registry (NCT06062134).
Disciplines :
Anesthesia & intensive care
Author, co-author :
Balocco, Angela Lucia ; Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium luchy88@gmail.com ; Anesthesiology, UZ Leuven, Leuven, Belgium
Gautier, Nicolas ; Service d'Anesthésie-Réanimation, CHIREC, Brussels, Belgium
Van Boxstael, Sam; Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium ; Anesthesiology and Intensive Care, Ziekenhuis Oost-Limburg, Genk, Belgium
López, Ana M; Anesthesiology and Intensive Care, Ziekenhuis Oost-Limburg, Genk, Belgium
Carella, Michele ; Centre Hospitalier Universitaire de Liège - CHU > > Service d'anesthésie - réanimation
Sala-Blanch, Xavier ; Anesthesiology, Hospital Clinic de Barcelona, Barcelona, Spain ; Human Anatomy and Embryology, University of Barcelona Faculty of Medicine, Barcelona, Spain
Hadzic, Admir; Anesthesiology and Intensive Care, Ziekenhuis Oost-Limburg, Genk, Belgium
Gautier, Philippe ; Université de Liège - ULiège > Département des sciences cliniques > Anesthésie et réanimation ; Service d'Anesthésie-Réanimation, CHIREC, Brussels, Belgium
Language :
English
Title :
Pericapsular nerve group block: a 3D CT scan imaging study to determine the spread of injectate
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