IUD Issues: Zero in with ultrasound
Use of long-acting reversible contraceptives (LARCs) among premenopausal women has increased 5-fold during the past decade.1 The intrauterine device (IUD) is the most popular LARC, used by 6.4% of women aged 15–44 to prevent pregnancy.1 IUDs have also been proposed as a treatment for menorrhagia.
The 2 most commonly available types of IUDs in the United States are nonhormonal copper-containing devices (copper T-380A; ParaGard, Duramed Pharmaceuticals), and hormone-releasing systems Mirena and Skyla (Bayer HealthCare Pharmaceuticals Inc.). Both have a T-shaped polyethylene frame compounded with barium sulfate to make them radiopaque, enhancing their appearance by radiography but not by ultrasound...