Cic edizioni internazionali
Journal of Prenatal Medicine

The cervical length correlates with the amount of bleeding during cesarean section of the pernicious placenta previa

Original Article, 8 - 13
doi: 10.11138/jpm/2017.11.1.008
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Introduction: to investigate the association between the amount of bleeding during a cesarean section and the effacement of the uterine cervix in patients with pernicious placenta previa.
Methods: this study reviewed 50 singleton pregnancies with pernicious placenta previa. In cases of pernicious placenta previa, the cervical length were retrospectively measured and compared with the amount of bleeding during the cesarean section.
Results: there was a significantly negative correlation between the amount of bleeding and cervical length (r = -0.390, P =0.005). The threshold cervical length associated with massive bleeding (>2500 mL) was 34.5mm, based on an ROC curve.
Then, all cases were stratified by cervical length, ≤34.5mm was defined as Group S, and 34.5 mm as Group L. The amount of bleeding in Group S was significantly larger than in Group L, and the length of hospital stay was longer in Group S. It was also found that hysterectomy after CS was significantly higher in Group S than in Group L. However, there were no significant differences in any of the other maternal demographics between the two groups.
Conclusion: this study demonstrated that a short cervical length, in cases with pernicious placenta previa, was associated with massive bleeding during the operation. In addition, short cervical length seems to be one of the warning signs for massive bleeding and cesarean hysterectomy during the operation for pernicious placenta previa.