Analgesia during at-home use of misoprostol as part of a medical abortion regimen

The objective of this study was to identify predictors of narcotic analgesi c use during medical abortion. Two-thousand-seven-hundred-forty-seven women with pregnancies of 63 days gestational age or less received 200 mg mifepr istone followed by at-home use of 800 mug vaginal misoprostol in two consec utive clinical trials in the United States, and also reported their use of analgesics. Overall, 79% of these subjects used narcotic analgesics. Women in the 2nd of the two studies were randomized to use misoprostol 24, 48, or 72 h after mifepristone. Those who were randomized to 24 h were more Likel y to use narcotic analgesics than those who were randomized to 48 or 72 h. In both studies, the use of narcotic analgesia during medical abortion was less prevalent among parous women and Asian women, and among those with a g estational age of 56 days or less. The clinic providing care for the patien t was the most important determinant of narcotic analgesia use, even though the analgesia was used at home. Use of narcotic analgesics in these women undergoing medical abortion at home was more prevalent than use reported in previous studies where women underwent medical abortion in a clinical sett ing. (C) 2001 Elsevier Science Inc. All rights reserved.