Portuguese term (edited): botão anestésico

After previous hydration with 1500 ml saline, epidural anesthesia was induced with medial puncture at L3-L4 interspace with the patient in the lateral position, disposable 17G Tuohy needle and without previous **local infiltration anesthesia**.

Após hidratação prévia com 1500 ml de solução fisiológica, procedeu-se à anestesia peridural com punção mediana no espaço L3-L4 com a paciente em decúbito lateral, agulha Tuohy descartável calibre 17G e sem **botão anestésico** prévio.
http://tinyurl.com/ltx3dy

A "botão" is formed when a local anesthetic is injected under the skin and raises it.