Ultrasound-Guided Erector Spinae Plane Block: A Case Series Demonstrating Utility for Acutely Painful Conditions in the Emergency Setting.

Ultrasound-guided erector spinae plane block (ESPB) has emerged as a valuable technique in pain management. Though frequently used in chronic and postoperative pain, it remains underutilized in the emergency department (ED) setting. In particular, this block has become attractive because it is rapid, safe, and efficacious for a variety of different pain syndromes that are commonly encountered in the emergency department setting. Of particular importance is that this block results in pure sensory blockade, allowing patient movement after the procedure has been performed. This case series explores the efficacy of the ESPB in various clinical scenarios, including refractory cervical radiculopathy, rib fractures, obstructive nephrolithiasis, and sciatica. Each of these patients presented with symptoms of refractory aggressive pain management strategies, including non-steroidal anti-inflammatory drugs (NSAIDS), acetaminophen, narcotics, muscle relaxers, and ketamine. After undergoing ESPB, the patients were able to be successfully discharged without return visits to the emergency department for the return of their pain. This case series aims to show the utility of this procedure for refractory painful conditions and also reviews other indications where the block may be used. While previous reports have shown the utility of this block at individual levels, we present the flexibility of this block being used at multiple levels of the spine.