“…These results remained at 48 hours. In an unblinded study, Sillou and al [29] compared the injection of ropivacaine in the margin of the episiotomy (n = 31) to the absence of in ltration (n = 31). The pain evaluated by NRS was signi cantly lower in ropivacaine group at H4 (1,9 ± 0,3 versus 3,6 ± 0,5, p = 0,006), H8 (3,3 ± 0,4 versus 5,2 ± 0,4, p = 0,003), H12 (2,8 ± 0,4 versus 5,2 ± 0,4,p = 0,0001) and H24 (2,6 ± 0,4 versus 4,3 ± 0,4, p = 0,006).…”