Document Detail

Predicting incomplete uterine rupture with vaginal sonography during the late second trimester in women with prior cesarean.
MedLine Citation:
PMID:  10725496     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To evaluate the usefulness of serial transvaginal ultrasonographic measurement of the thickness of the lower uterine segment in the late second trimester for predicting the risk of intrapartum incomplete uterine rupture in women with previous cesarean delivery. METHODS: Serial transvaginal ultrasonography with full bladder was performed in 374 women without previous cesarean delivery (control group) and 348 women with previous cesarean delivery (cesarean group) from 19 to 39 weeks' gestation. The thickness of the lower uterine segment was measured in the longitudinal plane of the cervical canal. RESULTS: The thickness of the lower uterine segment decreased from 6.7 +/- 2.4 mm (mean +/- standard deviation [SD]) at 19 weeks' gestation to 3.0 +/- 0.7 mm at 39 weeks' gestation in the control group, but the thickness was more than 2.0 mm throughout this period in each control subject. In the cesarean group, the thickness decreased from 6.8 +/- 2.3 mm at 19 weeks' to 2.1 +/- 0.7 mm at 39 weeks' gestation and was significantly thinner than that of the control group after 27 weeks' gestation (P <.05). Eleven of 12 women (91%) with lower uterine segment less than the mean control - 1 SD in the late second trimester had a very thin lower uterine segment at cesarean delivery with fetal hair being visible through the amniotic membrane, ie, incomplete uterine rupture. In 17 of 23 women (74%) with lower uterine segment less than 2.0 mm in thickness within 1 week (4 +/- 3 days) before repeat cesarean delivery, intrapartum incomplete uterine rupture developed. CONCLUSION: Transvaginal ultrasonography is useful for measurement of the uterine wall after previous cesarean delivery.
H Gotoh; H Masuzaki; A Yoshida; S Yoshimura; T Miyamura; T Ishimaru
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  95     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  2000 Apr 
Date Detail:
Created Date:  2000-04-27     Completed Date:  2000-04-27     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  596-600     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology, Nagasaki University School of Medicine, Nagasaki, Japan.
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MeSH Terms
Cesarean Section
Predictive Value of Tests
Pregnancy Trimester, Second
Ultrasonography, Prenatal* / methods
Uterine Rupture / ultrasonography*
Uterus / ultrasonography*

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