Factors Associated with Complete Abortion in Elective Medically Induced Abortion of Pregnancy at A Tertiary Care Hospital in Southern Thailand
Abstract
Objective: To identify the factors associated with successful complete abortion in women undergoing elective medically induced abortion of pregnancy at gestational age ≤24 weeks at a tertiary care hospital in Southern Thailand.
Material and Methods: This retrospective cohort study reviewed medical records from January 2017 to June 2024 of women with unintended pregnancies at GA ≤24 weeks who underwent medical abortion using mifepristone and misoprostol. Multivariable logistic regression identified factors associated with abortion success and complications.
Results: Complete abortion was significantly higher among women with gestational age ≤12 weeks (59.5%, 251/378) compared to those >12 weeks (40.5%, 171/306) (p-value 0.006). Overall, among 684 cases, complete abortion was achieved in 422 (61.7%). Surgical intervention was required in 35.2%, sponge forceps uterine evacuation in 2.9%, and subtotal hysterectomy in 0.1%. Gestational age beyond 12 weeks was associated with an increased risk of incomplete abortion (adjusted odds ratio [OR] 1.61, 95% confidence interval [CI] 1.17–2.21).
Conclusion: Gestational ages ≤12 weeks had higher complete abortion rates. Early access to abortion services may reduce complications and improve success rates.
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