5 mL of 0.25% bupivacaine with epinephrine (1:200,000) clinical trials

Cervicothoracic Sympathetic Block Evaluation for Post COVID Condition

This study is looking at a new treatment called cervicothoracic sympathetic block (CSB) for people with long COVID. It's to see if temporarily blocking certain nerves can help with symptoms like fatigue and brain fog caused by problems with the body's automatic functions.