The Clinical Impact of Serratus Anterior VS. Erector Spinae Plane Block on Pain Management of Tube Thoracostomy in Emergency Department Patients.

In the emergency department, tube thoracostomy is a common critical procedure to manage symptomatic pleural issues such as pneumothorax and pleural effusion.\[1\] This technique employed to remove air or fluid from the pleural cavity, restore negative intrapleural pressure and let the lungs expand again to help normal cardiopulmonary function to be restored again. \[2\] However, the procedure is often associated with significant pain, with approximately 50% of patients reporting pain levels between 9-10 out of 10 during the intervention, and for pain management emergency physicians have traditionally combined local anesthetics with opioids or anxiolytics. Yet, these methods have notable drawbacks: opioids carry risks of addiction and adverse side effects (e.g., nausea/vomiting, respiratory depression, delirium), while procedural sedation is time-intensive, requires monitoring, and carries risks of complications such as apnea and hypotension.\[3\] Local anesthetic infiltration for pain management can also fail to effectively and evenly target the intercostal nerves responsible for chest wall sensation.\[4\] Ultrasound-guided fascial plane blocks (erector spinae plane and serratus plane blocks) have recently been proposed as targeted alternatives for reliable and extended pain control of tube thoracostomy as each block produces a unique distribution of anesthesia. \[5\] Despite establishing of these techniques for pain control during thoracic surgeries, its application in emergency settings for tube thoracostomy is underexplored enough yet \[6\], a gap explicitly identified in the recent literature.\[4\] Therefore, in this study we evaluate the impact of ESP and SAP block for pain management and overall quality of recovery which practically performed by emergency physicians.