Archives of Gynecology and Obstetrics

, Volume 263, Issue 1, pp 13–16

Changes in uterine size after vaginal delivery and cesarean section determined by vaginal sonography in the puerperium

Authors

  • H. Negishi
    • Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Utah Health Science Center, ARUP II 546 Chipeta Way Room 109, Salt Lake City, Utah 84108, USA e-mail:H. Negishi@m.cc.utah.edu
  • Tatsuro Kishida
    • Department of Obstetrics & Gynecology, School of Medicine Hokkaido University, N14 W7 Kita-ku, Sapporo 060, Japan
  • Hideto Yamada
    • Department of Obstetrics & Gynecology, School of Medicine Hokkaido University, N14 W7 Kita-ku, Sapporo 060, Japan
  • E. Hirayama
    • Department of Obstetrics & Gynecology, School of Medicine Hokkaido University, N14 W7 Kita-ku, Sapporo 060, Japan
  • Masato Mikuni
    • Department of Obstetrics & Gynecology, School of Medicine Hokkaido University, N14 W7 Kita-ku, Sapporo 060, Japan
  • Seiichiro Fujimoto
    • Department of Obstetrics & Gynecology, School of Medicine Hokkaido University, N14 W7 Kita-ku, Sapporo 060, Japan
Original Article

DOI: 10.1007/s004040050253

Cite this article as:
Negishi, H., Kishida, T., Yamada, H. et al. Arch Gynecol Obstet (1999) 263: 13. doi:10.1007/s004040050253

Abstract 

There have been few reports on postpartum changes in the uterus during the three months after delivery. The aim of this study was to evaluate uterine morphological changes in women after vaginal delivery (n=262–351) and in women after cesarean section (n=64–82) and to evaluate the relation between breast-feeding and parity, and uterine involution at 1 and 3 months postpartum measured by vaginal ultrasonography. There were no significant differences in parity between the vaginal delivery group and the cesarean section group. The length of the uterus at one month (7.93±1.16 cm, mean±SD) and, three months (7.03± 1.19 cm) and the width of the uterus at three months (3.83±0.94 cm) after delivery in the cesarean section group were greater than in the transvaginal group (7.64±1.03 cm, 6.65±0.99 cm, 3.57±0.62 cm, respectively). Increasing maternal parity was associated slightly with larger uterine size at one month post partum. The length of the uterus of women with a breast-feeding rate of 80% or more per day was 6.35±0.85 cm, and shorter than in women with a rate of 20% or less 7.03±1.04 cm, at three months after delivery. The width of the uterine body of women with a breast-feeding rate of 80% or more per day was 3.32±0.45 cm, and shorter than in women with a rate of 20% or less 3.87±0.66 cm, at 3 months after delivery. Stepwise regression and multiple regression analysis among parity, the history of cesarean section, the breast-feeding rate at one and three months after the delivery, and the restoration of the menses at three months after the delivery showed that the uterine size at one month after the delivery was related to the cesarean section and that the uterine size at three months after delivery was mostly related to the rate of breast-feeding. These results indicated that uterine involution was related to delivery mode at one and three months postpartum, feeding mode at three months postpartum, the menses restoration, and parity. The rate of breast-feeding was mostly related to the uterine size at three months postpartum.

Key words PuerperiumInvolutionUterusDelivery modeBreast-feedingUltrasound

Copyright information

© Springer-Verlag Berlin Heidelberg 1999