Uterine artery embolization (UAE) is a minimally invasive procedure that shrinks uterine fibroids by cutting off their blood supply. Instead of surgically removing fibroids or the uterus itself, a specialist threads a thin catheter into the arteries feeding the fibroids and injects tiny particles that block blood flow. Starved of oxygen and nutrients, the fibroids gradually die and shrink over weeks to months.
How the Procedure Works
UAE is performed by an interventional radiologist, a doctor who specializes in image-guided procedures. You’ll receive sedation and local anesthesia, but you stay awake. The radiologist makes a small puncture, traditionally in the groin at the femoral artery, though wrist access through the radial artery is increasingly common. Using real-time X-ray imaging, they guide a catheter through your blood vessels until it reaches each uterine artery.
Once the catheter is in position, the radiologist injects tiny particles (typically made of polyvinyl alcohol or calibrated microspheres) into the artery. These particles are small enough to travel deep into the capillary network feeding the fibroids, where they lodge and block flow. The goal is to starve fibroid tissue while preserving enough blood supply to the healthy uterus. The entire procedure typically takes 30 to 40 minutes.
If you have a choice of access site, wrist access offers real advantages. A randomized trial found that patients who had the catheter placed through the wrist reported dramatically less discomfort: 43% experienced no procedure-related discomfort at all, compared to 0% in the groin-access group. Wrist access also meant shorter procedure times, less radiation exposure, and far less pain from compression at the puncture site afterward. The complication rates were similar between the two approaches.
Who It’s For
UAE is primarily used for women with symptomatic uterine fibroids, the noncancerous growths that develop in the muscular wall of the uterus. If fibroids are causing heavy menstrual bleeding, pelvic pain or pressure, frequent urination, or a visibly enlarged abdomen, UAE is a viable alternative to hysterectomy or surgical fibroid removal (myomectomy). It’s also used in some cases for postpartum hemorrhage and other uterine vascular problems.
The procedure tends to work best for women who want to keep their uterus, are done having children or are willing to accept some fertility uncertainty, and prefer to avoid major surgery. Women with very large or numerous fibroids, those with fibroids that grow on a stalk outside the uterus (pedunculated fibroids), or those with active pelvic infections are generally not ideal candidates.
How Effective It Is
UAE has a strong track record for symptom relief. Across multiple large studies, 83% to 92% of women experienced significant improvement in heavy menstrual bleeding within the first year. Bulk-related symptoms like pelvic pressure and urinary frequency improved in 86% to 93% of patients. Menstrual pain improved in roughly 77% to 79% of cases. These results hold up over time: at five-year follow-up, only about 10% of patients needed a second procedure (either a repeat embolization, myomectomy, or hysterectomy).
Results tend to build gradually. You may notice lighter periods within the first one to two menstrual cycles, but the fibroids themselves continue shrinking for several months after the procedure.
Recovery and What to Expect
The first few days after UAE are the hardest. Most women experience what’s called post-embolization syndrome: pelvic cramping and pain, low-grade fever, nausea, fatigue, and loss of appetite. These symptoms peak around two to three days after the procedure and then steadily improve. The cramping can be intense initially, similar to severe menstrual cramps, and typically requires prescription pain management for the first few days.
Most women return to normal daily activities within one to two weeks, significantly faster than the six-week recovery typical of a hysterectomy. There’s no surgical incision to heal, just a small puncture site at the wrist or groin. You’ll generally have a follow-up imaging appointment a few months later to confirm the fibroids are shrinking.
Risks and Complications
UAE is considered safe, but it carries some risks. Infection occurs in roughly 1.2% of cases, sometimes requiring intravenous antibiotics or, rarely, surgery. Access-site complications like bruising or a small pseudoaneurysm at the groin puncture are possible but uncommon, and they’re even rarer with wrist access.
The most discussed risk is the possibility of early menopause. About 7.3% of women in a large registry developed absent periods (amenorrhea) after UAE, but 86% of those women were 45 or older, meaning they were already approaching menopause naturally. For younger women, the risk of permanent menopause from UAE is considerably lower. Temporary changes in menstrual cycles are common and usually resolve within a few months.
Fertility After UAE
This is where the picture gets more nuanced. UAE was not originally designed as a fertility-preserving treatment, and the data on pregnancy outcomes is still limited compared to myomectomy. Pregnancies do happen after UAE, and many are successful, but the risks are higher than average.
In one series of 16 pregnancies following UAE, 87.5% resulted in live births and 12.5% ended in miscarriage, a rate similar to the general population. However, a larger review of post-UAE pregnancies found a miscarriage rate closer to 27% to 30%, with elevated rates of preterm delivery (around 18%), first-trimester bleeding (40%), and abnormal placental implantation. Placenta accreta, a serious condition where the placenta grows too deeply into the uterine wall, has been reported in multiple post-UAE pregnancies.
If future pregnancy is your primary goal, myomectomy is generally preferred over UAE. But for women whose main concern is symptom relief and who may want to preserve the option of pregnancy rather than actively planning one, UAE remains a reasonable choice worth discussing with both a gynecologist and an interventional radiologist.
UAE Compared to Surgery
The main alternatives to UAE are myomectomy (removing the fibroids while keeping the uterus) and hysterectomy (removing the uterus entirely). Each has trade-offs. Hysterectomy is the only treatment that guarantees fibroids won’t return, but it’s major surgery with a longer recovery and permanently ends fertility. Myomectomy preserves fertility better than UAE but involves a surgical incision, a longer recovery than embolization, and fibroids can still grow back.
UAE sits in the middle: less invasive than either surgery, faster recovery, high symptom relief rates, and a low but real chance of needing additional treatment down the road. The roughly 10% reintervention rate at five years means that 9 out of 10 women who choose UAE won’t need another procedure within that window.