Mirena IUD lawsuits allege the device can cause a number of complications including infections, ectopic pregnancies, scarring and adhesions. But one of the most commonly cited Mirena side effects are uterine perforations. This Mirena complication is extremely dangerous and can lead to a host of other problems if the Mirena IUD is not removed as soon as possible.

According to the Mirena prescribing information, perforation or penetration of the uterine wall or cervix may occur during insertion. However, it’s not unusual for a Mirena uterine perforation to be detected until sometime later. The risk of Mirena uterine perforation is highest for breastfeeding women, those who recently had a child, or women with an inverted uterus. At a minimum, women who have recently given birth should not receive Mirena until 6 weeks post-partum, according to the prescribing information.

Symptoms of uterine perforation may include:

  • Lower abdominal pain
  • Heavy bleeding
  • Nausea
  • Vomiting
  • Fever

According to the Mirena prescribing information, if a Mirena uterine perforation occurs, the device may no longer prevent pregnancy. Following a Mirena uterine perforation, the device may move outside the uterus and can cause internal scarring, infection, or damage to other organs.

In 2010, Health Canada, that country’s counterpart to the U.S. Food & Drug Administration (FDA) communicated to health care providers that the risk of Mirena perforations is quite serious, occurring at a rate of 1 in 1,000 women and during 1/10,000 Mirena insertions. The regulator warned that increased use of the Mirena IUD had increased the number of uterine perforations.

It’s important that women using Mirena perform regular checks to ensure the device’s threads are still in place. If threads are not visible, have moved or are broken, the IUD might have broken, perforated the uterus or been expelled. If this occurs, see your doctor so he or she can determine if the Mirena IUD has migrated or punctured the uterine wall.

If Mirena perforates the uterus, the device must be located and removed. In some cases this may involve surgical intervention. Delayed treatment of a Mirena uterine perforation may result in migration outside the uterine cavity, adhesions, peritonitis, intestinal perforations, intestinal obstruction, abscesses and erosion of adjacent tissue.

At least 16 Mirena lawsuits currently pending in Superior Court in New Jersey allege Bayer hid the real risks of uterine perforations and other Mirena complications from patients and their doctors, and that the devices are defective. Recently, Bayer asked that all of the Mirena IUD lawsuits pending in New Jersey be consolidated in Middlesex County.

Published October 26, 2012 by