Pregnancies diagnosed during Depo-Provera use. Journal   Contraception. Citation   Contraception. 66(3):169-72 Publication date   2002 Sep Authors   Borgatta L Murthy A Chuang C Beardsley L Burnhill MS Investigators   Cynthia H Chuang MeSH headings   Contraceptive Agents, Female Medroxyprogesterone 17-Acetate Abstract   We conducted a review of contraceptive failures among women using Depo-Provera (depot medroxyprogesterone acetate), using reports to the Insurance Division of Planned Parenthood Federation of America, Inc. Cases were included if the Depo-Provera had been given at a Planned Parenthood center and pregnancy had either been diagnosed by, or reported to, a Planned Parenthood center. There were 402 reports of pregnancy from 1994 through 1998. The crude rate of reported pregnancies was 0.42 pregnancies per 1000 women using Depo-Provera each year.Pregnancy was diagnosed after the first trimester in 46% of women. Seventy-seven women (19.1%) received additional Depo-Provera injections while pregnant. Of the women whose date of conception could be estimated, 113 of 258 (45%) became pregnant after the injection. There was no observed increase in ectopic pregnancy rate, and no fetal anomalies were reported. Although pregnancy during Depo-Provera use is rare, it does occur. These pregnancies are frequently unrecognized until beyond first trimester. Medline ID   22271363