The aim of the study was to evaluate the analgesic effect of transcutaneous electrical nerve stimulation High (100 Hz) and low (4 Hz) frequency in postpartum pain after cesarean section.

Mothers were randomly divided into three groups (G100, G4 and placebo (GP) - appliance off) and evaluated by NRS (numeric rating scale) before, immediately after application of TENS, and every 20 minutes until he was one hour after the application of electroanalgesia, to verify its effectiveness over time.

Inclusion Criteria:

• aged 18 years
• present pain at the site of surgical incision less than three according to Category Numerical Scale (NRS)
• literate oriented as to time and space
• with spinal anesthesia before surgery
• incision pfannenstiel type with absence of genitourinary pathology
• primiparous or multiparous

Exclusion Criteria:

• patients with abnormal sensitivity to clinical examination
• demyelinating diseases
• spinal cord injury
• hemorrhage
• infection
• fever
• anesthetic complications
• hypertension, mammary, intolerance, irritation or strong discomfort at the injection site caused by TENS