• Kathryn S Bower, Chloe C McCarthy, Parth Vyasa, Khanjan Nagarsheth, and Mehul J Desai.
• Department of Clinical Research, International Spine, Pain & Performance Center, Washington, DC, USA.
• Pain Pract. 2024 Aug 4.

ObjectiveThe objective of this study was to evaluate the effect of outpatient celiac plexus block on acute pain reduction in patients with suspected median arcuate ligament syndrome.MethodsThis is an Institutional Review Board approved, retrospective chart review. Data were collected and analyzed from patients who received celiac plexus blocks from November 1, 2021 through April 6, 2023. The primary outcome was pain reduction, determined by the change in numerical pain rating scale (NPRS) from pre-procedure to post-procedure. Additional data collected include patient demographics, comorbidities, preoperative symptoms and duration of symptoms.ResultsThere were 33 patients identified in this study. Thirty-one patients were included in the data analysis. The median age of the cohort was 29 years, and the median BMI was 20.4. 94% of the cohort was female. These patients were referred as part of an evaluation for symptomatic vascular compression disorders. For many patients, positive response to celiac plexus block was used as an indication to proceed with surgical MALS resection. We provide a diagnostic algorithm for MALs. All patients endorsed preoperative symptoms. Patients experienced a median pain reduction of -4 from baseline to immediately post-procedure.ConclusionsCeliac plexus blocks continue to be a tool for ruling out neurogenic median arcuate ligament syndrome in patients who have undergone extensive previous imaging and assessments for vascular compression disorders. Our data suggest that patients with suspected MALS may experience substantial immediate pain relief from temporary blocks of the celiac ganglion as guided by fluoroscopy in an outpatient setting.© 2024 World Institute of Pain.

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