Dr. Margaret Gray and Dr. Donna Harrison have published a review of FDA's Adverse Event Reports from RU-486 abortions in the February 2006 issue of the Annals of Pharmacotherapy.
They note that the "third most common class of severe adverse events was undiagnosed ectopic pregnancy." The drugs (mifepristone and misoprostol) involved in RU-486 abortions shouldn't be given to women with ectopic pregnancies. In the discussion section of the paper, the doctors note,
"Ectopic pregnancy is an absolute contraindication to the use of mifepristone, and failure to rule out ectopic pregnancy resulted in one death, as well as unnecessary morbidity. Requiring ultrasound documentation of intrauterine location of the pregnancy by a qualified ultrasonographer prior to the administration of mifepristone would reduce this life-threatening complication to a minimum."
It's clear that some abortion providers are failing to give women an ultrasound to determine if they have an ectopic pregnancy before prescribing mifepristone, even though failing to rule out an ectopic pregnancy can lead to severe injury or death.
The doctors also mention that,
"With mifepristone abortions, the rate of failure to cause complete termination of pregnancy increases dramatically, along with hemorrhagic events, as the gestational age and the size of the placenta increases. The US clinical trial demonstrated a failure rate of 8% at 49 days or less from the last menstrual period (LMP), increasing to 17% at 50–56 days from the LMP, and further increasing to a 23% failure at 57–63 days from the LMP, as established by sonographic criteria."
Numerous abortion clinics, including Planned Parenthood, disregard the FDA's medication guidelines and prescribe mifepristone up to 63 days from LMP and all the while tell women that it's "96-97 percent effective."
Representative Roscoe Bartlett is currently getting some media coverage for his legislation to withdraw the FDA's approval of RU-486 and review the way in which it was approved.
RU-486 - I'm Hatin' It
Safe and Effective or Unsafe and Ineffective?