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김광준 ( Gwang Jun Kim ),이은실 ( Eun Sil Lee ),이우석 ( Woo Seok Lee ),이상훈 ( Sang Hoon Lee ),장영진 ( Young Jin Jang ),김동호 ( Dong Ho Kim ) 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.7
Objective: The aim of this study was to find out the relating factors with the actual delivery day in term singleton pregnancy. Methods: The 52 patients with singleton gestation were visited weekly and measured for their lower uterine segment (LUS) thickness, cervical length and cervical gland thickness by transvaginal ultrasonography and for amnionic fluid index (AFI) by transabdominal ultrasonography from 36 weeks of gestation until birth. Regression analysis was used to find out the relevance between these factors and remaining days to birth. Resullts: There was a significant relationship between cervical length and remaining days to birth in term pregnancy, which could be described as a mathematical equation (remaining days for delivery=6.12+0.24×cervical length (㎜) r=0.29, p<0.01). However, no relationship was found between factors such as LUS, AFI, and cervical gland thickness and remaining days to birth. Conclusion: Our results suggest that the actual delivery day in term singleton pregnancy might be predicted with cervical length.