表面筋電図を用いた分娩において補助的役割を果たす母体の筋調査

抄録

Perinatal well-being and support for childbirth are important issues as measures against the declining birthrate and women's social advancement in Japan. Meanwhile, although the death of mothers and infants during delivery has decreased due to advances in medical technology, troubles in delivery has still been reported. If delivery progress is delayed, there is a risk of serious problems and could affects the prognosis of the mother and fetus. During delivery, it has been clarified that the fetus progresses to the uterine ostium with rotating his own body. It is considered that the maternal muscle activity around the uterus also plays an auxiliary role in childbirth, though the detailed mechanism has not been revealed. Although various methods are used to measure muscle activity, it is necessary to select a non-invasive method considering the effects on the mother and fetus because the main purpose of this study is assessment of muscle activation for pregnant women. The surface electromyography (EMG) is a method for measuring muscle activity that can be used for pregnant women. Thus, the muscle activity around trunk during bear down was measured for four women in this study for the future study in the process of giving birth for pregnant women. At first, EMG electrodes were placed on the right and left upper rectus abdominis, lower rectus abdominis, oblique abdominal muscle and adductor muscle. Next, the participants did the act of bearing down on a bed. As the results, some trend of the muscle activity during the act of bearing down motion was observed.