A study of pregnancy after endometrial ablation using linked population data

Area of Science:

• Reproductive Medicine
• Gynecology
• Obstetrics

Background:

• Endometrial ablation treats heavy menstrual bleeding in women desiring no future pregnancies.
• Post-ablation pregnancy is rare but associated with increased complications.

Purpose of the Study:

• To identify factors linked to pregnancy after endometrial ablation.
• To describe pregnancy and birth outcomes in these cases.

Main Methods:

• Population-based data linkage study in New South Wales, Australia (2001-2015).
• Included women aged 15-50 who had undergone endometrial ablation.
• Cox proportional hazard regression and descriptive statistics were used.

Main Results:

• 3.1% of women (575/18,559) experienced post-ablation pregnancy (≥20 weeks gestation).
• Nulliparity (aHR 12.2), older age, marital status, and heavy menstrual bleeding diagnosis were associated with pregnancy.
• High rates of cesarean delivery (43%), preterm birth (13%), and stillbirth (13.3/1000) were observed.

Conclusions:

• Nulliparity is a significant risk factor for post-ablation pregnancy.
• Emphasizes the importance of comprehensive counseling regarding treatment choices for heavy menstrual bleeding.