Preinduction cervical ripening: A randomized prospective comparison of the efficacy and safety of intravaginal and intracervical prostaglandin E2 gel

Turnball, 1968, Induction of labor, J Obstet Gynaecol Br Commonw, 75, 800 MacDonald, 1970, Surgical induction of labor, Am J Obstet Gynecol, 107, 908, 10.1016/S0002-9378(16)34045-5 Clinch, 1979, Induction of labor—a six year review, Br J Obstet Gynaecol, 86, 340, 10.1111/j.1471-0528.1979.tb10607.x MacKenzie, 1977, Cervical ripening with intravaginal prostaglandin E2 gel, BMJ, 2, 1381, 10.1136/bmj.2.6099.1381 MacKenzie, 1978, The influence of pre-induction vaginal prostaglandin E2 gel upon subsequent labour, Br J Obstet Gynaecol, 86, 657, 10.1111/j.1471-0528.1978.tb14943.x O'Herlihy, 1979, Influence of preinduction prostaglandin E2 vaginal gel on cervical ripening and labour, Obstet Gynecol, 54, 708 Prins, 1983, Cervical ripening with prostaglandin E2 gel, Obstet Gynecol, 61, 459 Neilson, 1983, A comparison of prostaglandin E2 gel and prostaglandin F2α gel for preinduction cervical ripening, Am J Obstet Gynecol, 146, 526, 10.1016/0002-9378(83)90795-0 Prins, 1986, Preinduction cervical ripening with sequential use of prostaglandin E2 gel, Am J Obstet Gynecol, 154, 1275, 10.1016/0002-9378(86)90712-X Ekman, 1983, Intravaginal versus intracervical application of prostaglandin E2 in viscous gel for cervical priming and induction of labor at term in patients with an unfavorable cervical state, Am J Obstet Gynecol, 147, 657, 10.1016/0002-9378(83)90445-3 Floberg, 1983, Experience with an industrially manufactured gel PGE2 for cervical priming, Arch Gyncol, 233, 225, 10.1007/BF02114604 Noah, 1987, Preinduction cervical softening with endocervical PGE2, a multicenter trial, Acta Obstet Gynecol Scand, 66, 3, 10.3109/00016348709092944 Bernstein, 1987, Cervical ripening and labor induction with prostaglandin E2 gel: a placebo-controlled study, Am J Obstet Gynecol, 156, 336, 10.1016/0002-9378(87)90279-1 Hales, 1994, Double-blind comparison of intracervical and intravaginal prostaglandin E2 for cervical ripening and the induction of labor, Am J Obstet Gynecol, 171, 1087, 10.1016/0002-9378(94)90041-8 Seeras, 1995, Induction of labor utilizing vaginal vs. intracervical prostaglandin E2, Int J Gynaecol Obstet, 48, 163, 10.1016/0020-7292(94)02260-6 Nuutila, 1996, Local administration of prostaglandin E2 for cervical ripening and labor induction: the appropriate route and dose, Acta Obstet Gynecol Scand, 75, 135, 10.3109/00016349609033305 Keirse, 1995, Randomized comparison of the effects of endocervical and vaginal prostaglandin E2 gel in women with various degrees of cervical reopenings, Am J Obstet Gynecol, 173, 1859, 10.1016/0002-9378(95)90441-7 Granstrom, 1992, Serum collagenase levels in relation to the state of the human cervix during pregnancy and labor, Am J Obstet Gynecol, 67, 1284, 10.1016/S0002-9378(11)91701-3 Ito, 1977, Pz-peptidase activity in the human uterine cervix in pregnancy at term, Clin Chim Acta, 78, 267, 10.1016/0009-8981(77)90315-1 Uldbjerg, 1983, Ripening of the human uterine cervix related to changes in collagen, glycosaminoglycans, and collagenolytic activity, Am J Obstet Gynecol, 147, 662, 10.1016/0002-9378(83)90446-5 von Maillot, 1979, Changes in the glycosaminoglycans distribution pattern in the human cervix during pregnancy and labor, Am J Obstet Gynecol, 135, 503, 10.1016/0002-9378(79)90440-X MacKenzie, 1977, Cervical ripening with intravaginal prostaglandin E2 gel, BMJ, 2, 1381, 10.1136/bmj.2.6099.1381 Bishop, 1964, Pelvic scoring for elective induction, Obstet Gynecol, 24, 266 Rayburn, 1989, Prostaglandin E2 gel for cervical ripening and induction of labor: a critical analysis, Am J Obstet Gynecol, 160, 529, 10.1016/S0002-9378(89)80020-1 Bernstein, 1991, Prostaglandin E2 gel for cervical ripening and labour induction: a multicentre placebo-controlled trial, Can Med Assoc J, 145, 1249 Keirse, 1993, Prostaglandins in preinduction cervical ripening. Meta-analyses of worldwide clinical experience, J Reprod Med, 38, 89 Wing, 1995, A comparison of misoprostol and prostaglandin Eaaaa2 gel for preinduction cervical ripening and the induction of labor, Am J Obstet Gynecol, 172, 1804, 10.1016/0002-9378(95)91415-3 Magann, 1995, Cervical ripening before medical induction of labor: a comparison of prostaglandin E2, estradiol, and oxytocin, Am J Obstet Gynecol, 172, 1702, 10.1016/0002-9378(95)91401-3 Berghella, 1996, Stripping of membranes as a safe method to reduce prolonged pregnancies, Obstet Gynecol, 87, 927, 10.1016/0029-7844(96)00046-4 Atad, 1991, Nonpharmaceutical ripening of an unfavorable cervix and induction of labor by a novel double balloon device, Obstet Gynecol, 77, 146 Schreyer, 1989, Ripening the highly unfavorable-cervix with extra amniotic saline instillation or vaginal prostaglandin E2 application, Obstet Gynecol, 73, 938 Lin, 1995, A randomized trial of extra amniotic saline infusion versus laminaria for cervical ripening, Obstet Gynecol, 86, 545, 10.1016/0029-7844(95)00234-I Chez, 1995, Cervical ripening and labor induction after previous cesarean delivery, Clin Obstet Gynecol, 38, 287, 10.1097/00003081-199506000-00011 Ngai, 1996, Cervical priming with oral misoprostol in pre-labor rupture of membranes at term, Obstet Gynecol, 87, 923, 10.1016/0029-7844(96)00072-5 Prins, 1983, Cervical ripening with prostaglandin E2 gel, Obstet Gynecol, 61, 459