Which nerve fibers are most sensitive to local anesthesia

Which nerve fibers are most sensitive to local anesthesia

BCA?

Next in order of block are the large myelinated (Aα and Aβ) fibers , and the least susceptible are the small, nonmyelinated C fibers .

In fact, in this last group, impulses in the slowest conducting population (conduction velocity of 0.5 to 0.8 msec) are the most resistant to local anesthetic.