Elevated Risk of Postpartum Hemorrhage Among Women Diagnosed with Endometriosis and Adenomyosis: Findings from a Prospective Cohort Analysis
-
By
-
Teresa Mira Gruber
-
Greta Ebeling
-
Wolfgang Henrich
-
Sylvia Mechsner
-
June 30, 2026
Objective:
To evaluate and quantify the risk of postpartum hemorrhage in women with endometriosis and adenomyosis.
Approach:
- Study Design: A prospective cohort study comparing women with endometriosis and adenomyosis to a control group without these conditions.
- Participants: 82 women with endometriosis and adenomyosis matched with 82 women without these conditions.
- Definition of PPH: Postpartum hemorrhage was defined as blood loss of ≥1000 mL during childbirth.
- Data Collection: Cumulative blood loss was documented using standardized clinical methods.
Key Findings:
- 11 women in the study group experienced postpartum hemorrhage (13%) compared to 1% in the control group.
- The unadjusted odds ratio for postpartum hemorrhage in the EM group was 8.74 (CI:2.01-82.00, p=0.002).
- In the adjusted analysis, the odds ratio was 7.56 (95% CI:1.39-83.70, p=0.018).
Interpretation:
Women with endometriosis and adenomyosis are more likely to experience postpartum hemorrhage compared to those without these conditions.
Limitations:
- Small sample size.
- Wide confidence intervals.
- Potential misclassification due to self-reported data.
Conclusion:
The study indicates that women with endometriosis and adenomyosis are at an increased risk of postpartum hemorrhage.