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JOURNAL ARTICLE

Effects of Previous Laparoscopic Surgical Diagnosis of Endometriosis on Pregnancy Outcomes

Hui Li, Hong-Lan Zhu, Xiao-Hong Chang, Yi Li, Yue Wang, Jing Guan, Heng Cui
Chinese Medical Journal 2017 February 20, 130 (4): 428-433
28218216

BACKGROUND: The association between the previous history of endometriosis and obstetric outcomes is still ambiguous. This study aimed to evaluate the effects of previous history of operatively diagnosed endometriosis on pregnancy outcomes.

METHODS: A total of 98 primiparous women who had been diagnosed with endometriosis by previous laparoscopic surgery were included in this retrospective cohort study. Pregnancy outcomes were compared between these women (study group) who had a live birth and 300 women without endometriosis (control group) who had a live birth. In the study group, the pregnancy outcomes of 74 women who conceived naturally (no assisted reproductive technology [ART] subgroup) were simultaneously compared with 24 women who conceived by ART (ART subgroup).

RESULTS: Miscarriage was observed in 23 of 98 women with endometriosis (23.5%). There were 75 women who had a live birth after laparoscopic diagnosis of endometriosis in the study group eventually. On multivariate analysis, the postpartum hemorrhage rate increased significantly in the study group when compared with the control group (adjusted odds ratio: 2.265, 95% confidence interval: 1.062, 4.872; P = 0.034). There was an upward tendency of developing other pregnancy-related complications, such as preterm birth, placental abruption, placenta previa, cesarean section, fetal distress/anemia, and others in the study group than in the control group. However, the differences showed no statistical significance. Within the study group, the occurrence rate of postpartum hemorrhage and preterm birth was both higher in the ART subgroup than in the no ART subgroup. The differences both had statistical significance (44.4% vs. 17.5%, P = 0.024 and 27.8% vs. 1.8%, P = 0.010, respectively). At the same time, median (interquartile range) for gestational age at delivery in the ART subgroup was significantly shorter than that in the no ART subgroup (38 weeks [36-39 weeks] vs. 39 weeks [38-40 weeks]; P = 0.005).

CONCLUSIONS: Endometriosis may affect obstetric outcomes. Women with endometriosis have a higher risk of postpartum hemorrhage. Women with endometriosis who conceived by ART may have a higher risk of postpartum hemorrhage and preterm birth than those conceived naturally.

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