trade names: Isocaine, Polocaine; drug class: amide local anesthetic; action: inhibits ion fluxes across membranes, particularly sodium transport across cell membranes; decreases rise of depolarization phase of action potential; blocks nerve action potential; uses: local dental anesthesia, nerve block, caudal anesthesia, epidural pain relief, paracervical block, transvaginal block or infiltration.