In Group A, after selecting the parturient and recording
baseline parameters as in Group D, two pairs of self
adhesive skin electrodes measuring 50x50 mm were
applied on bilateral LI 4 (Hegu) points [Figure 3: Midpoint
between first and second carpal bones, first web space
dorsal side] and Sp 6 (Sanyinjiao) points [Figure 4: 5 cm
above medial malleolus in lower leg]. TENS was given by
Ultima IF4 interferential machine [Figure5]. Frequency of
electrical impulse was set at 80 Hz. Current intensity was
gradually increased according to comfort of the parturient.
A session of TENS was applied for 30 minutes during first
stage of labour and was removed after 30 minutes. TENS
was again applied after 30 minutes of TENS free period.
The procedure was repeated till delivery of neonate.