What doctor are you seeing? I just saw Dr. Reifsnyder 2 weeks ago at Hopkins Bayview. No mention of a Scalene Block for me. Based on my symptoms and complete loss of radial pulse he suggested I have my first rib removed. I did have a MR Neurography, Doppler Ultrasound, and a few other test that were all negative. The only test that showed anything was the Nerve Conduction/EMG.