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一、胎位异常与产力大家熟知,在分娩过程中,分娩三要素(产道、产力、胎位)之间是相互依赖,互相制约的。产力的异常可能是由于胎位异常所引起的,也可能导致胎位异常。前者如先露部未贴紧宫颈,不能引起神经性反射,而发生原发性宫缩微弱(乏力)。与之相反,由于产道及胎位的异常,先露部下降受阻,发生过强之宫缩。相继而产生继发性宫缩乏力。
First, abnormal fetal position and productivity We all know that in the delivery process, the three elements of childbirth (birth, productivity, fetal position) are interdependent and mutually restrictive. Abnormal labor may be due to fetal position abnormalities may also lead to fetal abnormalities. If the former is not attached to the Ministry of cervix dew, can not cause neurological reflex, and the occurrence of primary uterine weakness (fatigue). On the contrary, due to abnormal birth canal and fetal position, the first deformity decreased resistance, the contractions occurred too strong. One after another and produce secondary uterine inertia.