Clinical bottom line
Uterine artery embolization (UAE) is an increasingly utilized minimally invasive intervention for controlling postpartum hemorrhage (PPH), particularly in cases refractory to medical management or when surgical options carry high morbidity. Recent evidence supports UAE as an effective, uterus-preserving alternative that can rapidly achieve hemostasis in both primary and secondary PPH, including hemorrhage related to uterine pseudoaneurysms and placenta previa. However, patient selection, timing, and potential impacts on future fertility require careful consideration. While UAE reduces the need for hysterectomy and associated complications, its role as a first-line or adjunctive therapy continues to evolve with accumulating clinical experience and interventional radiology advances.
What the evidence shows
Postpartum hemorrhage remains a leading cause of maternal morbidity and mortality worldwide (Jouppila et al., 1995). Uterine artery embolization has emerged as a valuable tool in the management of PPH by occluding the uterine arteries to arrest bleeding while preserving the uterus. Das et al. (2017) provide a comprehensive overview of endovascular uterine artery interventions, highlighting UAE’s efficacy in controlling hemorrhage from various etiologies including uterine atony, placenta previa, and vascular lesions.
Clinical case reports and series demonstrate successful UAE use in both primary and secondary PPH. Mandviya et al. (2024) describe UAE as an effective intervention for primary PPH, emphasizing rapid hemostasis and avoidance of hysterectomy. Similarly, Subramaniam et al. (2018) report on UAE’s role in managing uterine artery pseudoaneurysms, a rare but serious cause of secondary PPH, showing favorable outcomes with minimal complications.
In placenta previa complicated by massive hemorrhage, Park et al. (2020) document UAE as a critical adjunct to surgical management, reducing intraoperative blood loss and transfusion requirements. However, Nomoto et al. (2017) caution that pregnancies following UAE may be complicated by abnormal placentation and recurrent hemorrhage, underscoring the need for close monitoring in subsequent pregnancies.
Vera Chido et al. (2012) review the broader role of interventional radiology in PPH, reinforcing that UAE offers a uterus-sparing alternative to hysterectomy with high technical success rates and acceptable safety profiles. Yi et al. (2017) further illustrate the diagnostic and therapeutic importance of identifying uterine pseudoaneurysms as a source of delayed PPH amenable to embolization.
Caveats and uncertainty
Despite promising outcomes, UAE is not without limitations. Its success depends on timely access to interventional radiology expertise and facilities, which may not be universally available, especially in low-resource settings. The procedure carries risks including non-target embolization, infection, and potential impacts on ovarian reserve and fertility, though data remain limited and sometimes conflicting.
Long-term reproductive outcomes after UAE are not fully elucidated. Nomoto et al. (2017) report abnormal placentation and recurrent hemorrhage in pregnancies post-UAE, suggesting that embolization may alter uterine vascularization and endometrial receptivity. These findings warrant cautious counseling regarding future fertility and pregnancy risks.
Moreover, the optimal timing of UAE—whether as a first-line intervention or after failure of medical and surgical measures—remains debated. Most evidence derives from case series and retrospective analyses rather than randomized controlled trials, limiting definitive conclusions about comparative effectiveness.
How this may change practice
UAE should be considered a key component of multidisciplinary PPH management algorithms, particularly for patients with refractory bleeding or contraindications to surgery. Increasing awareness and training in endovascular techniques among obstetric and interventional radiology teams can facilitate timely referral and intervention.
Clinicians should incorporate UAE into counseling discussions for women at high risk of PPH, especially those desiring uterine preservation. Pre-procedural imaging to identify vascular abnormalities such as pseudoaneurysms can guide targeted embolization and improve outcomes.
Given potential reproductive implications, patients undergoing UAE require individualized follow-up and monitoring in subsequent pregnancies for abnormal placentation or hemorrhagic complications. Further research is needed to clarify long-term fertility outcomes and optimize patient selection criteria.