NovaSure is not an alternative to endometrial ablation. It is one specific type of endometrial ablation. “Endometrial ablation” is the umbrella term for any procedure that destroys the uterine lining to reduce or stop heavy menstrual bleeding, and NovaSure is one of several devices approved to do that job. The confusion is understandable because NovaSure is so widely used that its name often comes up separately, as if it were a distinct procedure.
Understanding the difference matters if you’re weighing your options for treating heavy periods. Each ablation method uses a different energy source, takes a different amount of time, and has slightly different success rates.
Endometrial Ablation: The Umbrella Category
Endometrial ablation is a minimally invasive procedure designed to treat abnormally heavy menstrual bleeding (menorrhagia) that hasn’t responded to other treatments. The goal is to destroy the endometrium, the tissue lining the inside of the uterus, so it can no longer build up and shed heavily each month. It’s not surgery in the traditional sense: there are no incisions, and most women go home the same day.
The FDA has approved five devices that fall under the category of “global endometrial ablation,” meaning they treat the entire uterine lining at once rather than targeting small sections. These devices use different energy sources:
- Radiofrequency energy (NovaSure)
- Thermal balloon: a balloon filled with heated fluid that presses against and destroys the lining
- Circulated hot fluid: heated saline flows freely inside the uterus without a balloon
- Cryotherapy: uses extreme cold to freeze and destroy tissue
- Microwave energy: delivers microwave radiation through a probe to heat and destroy the lining
All five approaches aim for the same outcome. Subjective satisfaction rates are high across the board, but amenorrhea rates (the chance of your period stopping completely) vary widely, ranging from about 14% to 55% depending on the method and how long after the procedure you measure.
How NovaSure Works
NovaSure uses radiofrequency energy delivered through a mesh electrode that unfolds inside the uterus into a triangular shape, conforming to the uterine cavity. The mesh is made of a porous fabric plated with silver and gold. Once positioned, the device delivers bipolar radiofrequency energy that rapidly dries out and destroys the endometrial lining along with the thin layer of muscle just beneath it.
What makes NovaSure distinct from the other methods is its speed and built-in safety shutoff. The active treatment lasts no more than two minutes. As the tissue is destroyed, its electrical resistance increases. The device monitors that resistance in real time and automatically stops when it hits a specific threshold or when two minutes have elapsed, whichever comes first. During treatment, suction pulls the mesh snugly against the uterine wall and removes steam and fluid generated by the process.
NovaSure Success Rates
A ten-year review of NovaSure clinical data found that 98% of patients experienced a successful reduction in bleeding by 12 months. Amenorrhea rates, meaning periods stopped entirely, climbed over time. At six months, about 46% of women had no periods. By 12 months, that figure rose to roughly 59%. The trend continued: 65% reported amenorrhea at three years, and 75% at five years. So even if your period doesn’t disappear immediately, there’s a reasonable chance it will continue to lighten or stop over the following years.
These numbers are at the higher end of what global ablation methods achieve overall. That said, the procedure doesn’t work for everyone. About 2% of patients still reported heavy bleeding at the five-year mark.
Reintervention and Long-Term Outlook
One reality of endometrial ablation (regardless of the device used) is that some women eventually need a second procedure or a hysterectomy. Across all ablation methods, the estimated five-year reintervention rate is around 33%. That means roughly one in three women undergoes an additional procedure within five years, whether that’s a repeat ablation, a hysterectomy, or another intervention.
This doesn’t mean the procedure failed outright. In many cases, bleeding improved significantly but not enough, or symptoms returned gradually as the lining partially regrew. Your doctor may discuss hysterectomy as a more definitive option if you want a guaranteed end to heavy bleeding, particularly if you’re closer to the age range where that conversation makes sense.
What Recovery Looks Like
Recovery from NovaSure is relatively quick. The median time to full recovery is about five days. Most women return to work within two days and resume exercise within about five and a half days.
Expect vaginal discharge in the first week. Nearly 80% of women still have some discharge at the end of week one, though only a small number find it bothersome enough to mention. Cramping is common in the first day or two. About 64% of women use over-the-counter pain medication the day after the procedure, typically acetaminophen or ibuprofen. By day seven, only about 12% still need any pain relief.
Who Can and Cannot Have Ablation
Endometrial ablation, including NovaSure, is designed for premenopausal women with heavy periods who are done having children. That last part is critical. Ablation is not a sterilization procedure, but pregnancy after ablation carries significantly increased risks of miscarriage and other serious complications. You’ll still need to use birth control until menopause.
You’re not a candidate for ablation if you are currently pregnant, have a uterine infection, have been diagnosed with endometrial hyperplasia or uterine cancer, or are postmenopausal. Certain structural abnormalities of the uterus may also rule out specific devices. NovaSure, for example, requires the uterine cavity to accommodate its triangular mesh frame, so unusual uterine shapes or sizes can be a limiting factor.
Choosing Between Ablation Methods
If your doctor recommends endometrial ablation, the choice of device often depends on your uterine anatomy, your doctor’s experience and training, and what equipment is available at your facility. NovaSure’s short treatment time (under two minutes of active energy delivery) and its impedance-based auto-shutoff are practical advantages, and its amenorrhea rates trend toward the higher end of published data. But all five FDA-approved methods have strong satisfaction rates when performed by experienced physicians following established protocols.
The most important distinction isn’t between one device and another. It’s between ablation as a category and other treatment paths like hormonal therapy or hysterectomy. Ablation sits in the middle: more definitive than medication, less invasive than removing the uterus, but not guaranteed to be permanent for every woman.