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最近研究指出,人脐带分娩时的长度是受胎儿宫内活动量的影响,认为人脐带的增长取决于其张力。目前对这一问题的论述很多;如Tompkins假设胎动减少可能是臀先露,但其机理尚不能阐明。如能证实上述理论,可料想臀先露的脐带一定要比顶先露为短。本研究将着手调查这种不同。很多资料报道人脐带长度及各种调查脐带长度与胎儿或母体相互关联的数据。其中Gardiner认为如分娩时无并发症,臀先露的脐带必定比顶先露
Recent studies have shown that the length of human umbilical cord delivery is affected by the amount of intrauterine activity, that the growth of human umbilical cord depends on its tension. At present, there are many expositions on this issue; for example, Tompkins’s hypothesis that the decrease in fetal movement may be the first manifestation of hip but its mechanism can not be elucidated. If you can confirm the above theory, can be expected to reveal the umbilical cord must first exposed than the top to be short. This study will set out to investigate this difference. A lot of information is reported about the length of the umbilical cord and the data on the correlation between the length of the umbilical cord and the fetus or mother. Which Gardiner think no complications such as childbirth, buttocks must reveal the first exposed than the top