[Obstetric analgesia by blocking of the lumbar sympathetic nerves].
D016362:Analgesia, Obstetrical; D000758:Anesthesia; D000765:Anesthesia, Conduction; D000776:Anesthesiology; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy
ANESTHESIA, REGIONAL; LABOR
Analgesia obstétrica por bloqueo del simpático lumbar.