Is It a Paravasseeable Space or a Local Anesthesia?

Anesthesiologist: Many times we'll go and test the patient's belly or chest and they don't have a demonstrable sensory block. "That's, that's weird and doesn't add up," he says. Cadaver evidence shows a lack of spread ventral to the transverse process in local anesthetic blocks. So if we think that this block works by local anesthetic sort of spreading anteriorly in front and sort of, you know, being a backdoor of a paravasseeable space..."It was not that comfortable to go through with zero sedation."