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Lower cesarean section rate: dose, interval key to efficacy of misoprostol for ripening.(Obstetrics)

OB GYN News

| May 01, 2004 | Sullivan, Michele G. | COPYRIGHT 2004 International Medical News Group. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

NEW ORLEANS -- Women who received at least three doses of vaginal misoprostol for cervical ripening in a 24-hour period had a lower rate of cesarean section than did women who received two doses in 8 hours, Dr. Allahyar Jazayeri said at the annual meeting of the Society for Maternal-Fetal Medicine.

The drug has long been used off label to effect cervical ripening in labor induction, but there has been no agreement on the optimal dose or interval between doses, said Dr. Jazayeri of Bellin Health Center, Green Bay, Wis.

A total of 284 women were randomized to either 25 [micro]g of vaginal misoprostol every 4 hours for a maximum of two doses; or 25 [micro]g of vaginal misoprostol every 4 hours for a maximum of six doses. (Four patients were not included in the study data because of age restrictions or breaks in protocol.)

All women received an amniotomy and oxytocin when they reached 4-cm dilation. At the study outset, the women had a mean dilation of 1 cm, a mean effacement of 20%, and intact membranes.

There were no statistically significant differences in the time the patients took to reach 4-cm dilation, time from rupture of membranes ...

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