An ablation of the uterus, formally called endometrial ablation, is a minimally invasive procedure that destroys the inner lining of the uterus (the endometrium) to reduce or stop heavy menstrual bleeding. It’s not a removal of the uterus itself. Instead, it targets only the tissue responsible for monthly bleeding. About 64% of women who have the procedure stop getting periods entirely, and most others see a significant reduction in flow.
Why It’s Done
Endometrial ablation is specifically designed for women with heavy menstrual bleeding that hasn’t responded well to other treatments like hormonal medications. A period is considered heavy when you lose more than about one-third of a cup (80 ml) of blood per cycle, though most women gauge this by practical signs rather than measuring. You’re likely in that category if you regularly soak through a pad or tampon every hour or two, need to double up on protection, bleed for more than a week, or feel exhausted and short of breath from the ongoing blood loss. Many women with heavy periods develop anemia over time, which is a low red blood cell count that leaves you chronically tired.
The procedure is only appropriate for premenopausal women who are certain they don’t want future pregnancies. The FDA has approved endometrial ablation devices specifically for patients whose childbearing is complete, and there are good reasons for that restriction.
What Happens Before the Procedure
Before scheduling an ablation, your doctor will need to rule out more serious causes of heavy bleeding. This typically involves an endometrial biopsy, which takes a small tissue sample from the uterine lining to check for precancerous or cancerous cells. You’ll also have imaging, usually a transvaginal ultrasound or a saline infusion sonogram, to evaluate the shape and size of your uterine cavity and check for fibroids or other structural issues.
The procedure works best when the uterine cavity is relatively smooth and measures less than about 10 cm in length. Small fibroids under 3 cm are generally fine, but larger ones or significant uterine abnormalities may rule out ablation as an option.
Who Isn’t a Candidate
Several conditions make endometrial ablation unsafe or ineffective:
- Desire for future pregnancy. The procedure is permanent and makes safe pregnancy extremely unlikely.
- Precancerous changes or uterine cancer. Destroying the lining would mask cancer symptoms and prevent proper monitoring.
- Active pelvic infection. Any existing infection needs to be treated first.
- Structural uterine abnormalities. A uterus with an unusual shape (divided by a wall, or with two horns) doesn’t allow the ablation device to work evenly.
- Prior uterine surgery. A history of cesarean section or other surgery that cut through the uterine wall increases the risk of complications because the wall may be thinner in those areas.
- An IUD in place. Any intrauterine device must be removed before the procedure.
Women who are already postmenopausal are also generally not candidates, since there’s no clinical reason to ablate a lining that’s no longer shedding monthly.
How the Procedure Works
Endometrial ablation uses energy to destroy the uterine lining. Several different technologies exist: some devices use radiofrequency energy (electrical current that generates heat), others use a heated balloon filled with fluid, extreme cold, or heated saline circulated inside the uterus. All accomplish the same goal through different mechanisms. The procedure is done through the vagina and cervix, so there are no incisions on your abdomen.
Most ablations take less than 10 minutes of active treatment time. They can be performed in a doctor’s office under local anesthesia or in an outpatient surgical center with sedation. Some women choose general anesthesia, but it’s not always necessary. The choice depends on the specific technique used, your comfort level, and your doctor’s recommendation.
Recovery Timeline
Recovery is faster than many people expect. In a study tracking women after the procedure, the median time to feel fully recovered was five days. Most women returned to work within two days and resumed exercise within about five and a half days. Pain medication is typically only needed for the first day or two.
Nearly every woman experiences vaginal discharge (a mix of blood and watery fluid) in the first week. About 79% still had some discharge at the end of that first week, so this is completely normal and not a sign of a problem. That said, roughly 23% of women didn’t feel fully recovered within seven days, so your experience may be a bit slower, and that’s also within the normal range.
How Well It Works
For most women, endometrial ablation delivers meaningful relief. About 64% of women achieve complete amenorrhea, meaning their periods stop entirely. Most of the remaining women experience significantly lighter and shorter periods. Satisfaction rates are generally high in the first few years.
The less encouraging long-term picture is that about 25% of women who undergo the procedure eventually need a hysterectomy within five years. This happens because the uterine lining can partially regenerate over time, leading to a return of heavy bleeding or new symptoms like pelvic pain caused by blood becoming trapped behind scar tissue. This trapped-blood scenario, sometimes called post-ablation syndrome, can develop months or years after the original procedure and often requires further surgery to resolve.
Risks and Complications
Endometrial ablation is considered low-risk overall, but serious complications can happen. An FDA device-reporting database has documented cases of thermal injury to the bowel (the most commonly reported serious event), serious infections including sepsis, abscesses in the abdominal cavity, and, rarely, uterine rupture or burns to the lower genital tract. These events are uncommon but underscore why proper patient selection and correct device use matter. Most complications are linked to the procedure being performed outside the manufacturer’s guidelines, such as in women with thin uterine walls or undetected structural problems.
More common, milder side effects include cramping during and after the procedure, nausea from anesthesia, and the vaginal discharge already mentioned.
Why Contraception Still Matters
One of the most important things to understand about endometrial ablation is that it is not sterilization. Pregnancy can still occur after the procedure, and the outcomes are overwhelmingly poor. A Johns Hopkins systematic review found that 85% of pregnancies following ablation ended in termination, miscarriage, or ectopic pregnancy. The pregnancies that did continue had high rates of life-threatening complications: the placenta growing abnormally into the uterine wall, premature rupture of membranes, restricted fetal growth, uterine rupture, and stillbirth. Preterm and cesarean deliveries were also common among those that reached viability.
Because of these risks, reliable contraception after ablation is essential. Many doctors recommend a long-acting method or permanent sterilization (tubal ligation or a partner’s vasectomy) to eliminate the possibility entirely.