Main outcome measures
The pelvic floor sEMG were compared between CD and VD,and the four
vaginal delivery subgroups. A modified Glazer protocol was used to
analyze the pelvic floor sEMG value.
Results
The results showed that the average peak amplitude of phasic (flick)
contractions and the average mean amplitude of tonic contractions were
both significantly higher in CD than in VD (P < 0.01). In
contrast, CD had less the mean amplitude variability of tonic
contractions than VD (P < 0.01). The average peak amplitude of
phasic (flick) contractions and the average mean amplitude of tonic
contractions in forceps delivery
group was statistically lower than the other vaginal delivery groups
(P<0.05). The mean
amplitude variability of tonic contractions was larger in forceps
delivery group than group A, B. (P
<0.01).