Anatomical variations detected during ultrasound-guided interscalene brachial plexus block and clinical implications

Authors : Alper KILICASLAN, Funda GOK, Ismail Hakkı KORUCU, Asiye OZKAN, Resul YILMAZ

Pages : 141-145

Doi:10.5472/marumj.816311

View : 12 | Download : 13

Publication Date : 2020-10-23

Article Type : Research Paper

Abstract :Objective: Our aim was to evaluate the anatomic variations detected during ultrasound-guided interscalene brachial plexus block insert ignore into journalissuearticles values(US-ISB); and present their clinical implications. Materials and Methods: After the ethical approval for the study was obtained from the local ethics committee, the files and US records of patients who underwent US-ISB for anesthesia of the shoulder surgery were retrospectively analyzed. Results: Anatomical variations which were considered to affect the block technique were detected in 13 insert ignore into journalissuearticles values(11.8%); of 110 patients. C5 cervical root pierced the anterior scalene muscle insert ignore into journalissuearticles values(ASM); in 4.5%, and ventral rami of C5 and/or C6 were located in ASM in 3.6% of patients. There was a muscle bridge between C5 to C6 and C5 to C7 roots in 1.8% of the patients. The brachial plexus was located medial to ASM and missing from interscalene groove in 1.8% of patients. In one case insert ignore into journalissuearticles values(C5 root was located in ASM);, US-ISB resulted in incomplete brachial plexus anesthesia, and so general anesthesia insert ignore into journalissuearticles values(GA); was performed. Conclusion: Some of the brachial plexus variations in the interscalene area may be associated with further needle manipulation/ redirection and block failure. We consider that prospective studies including more populations are needed to elucidate the effects of these variations on block parameters.
Keywords : Brachial plexus, Interscalene block, Ultrasonography, Variations