References
- Cocks DP. Significance of initial condition of cervix uteri to subsequent course of labor. Br Med J 1955;1:327�8
- Thiery M. Preinduction cervical ripening. Obstet Gynecol Annu 1983;12:103�46
- Danforth DN, Veis A, Breen M, et al. The effect of pregnancy and labor on the human cervix: changes in collagen, glycoproteins and glycosaminoglycans. Am J Obstet Gynecol 1974;120:641�51
- Rouben D, Arias F. A randomized trial of extra-amniotic saline infusion plus intracervical Foley catheter balloon versus prostaglandin E2 vaginal gel for ripening the cervix and inducing labor in patients with unfavorable cervices. Obstet Gynecol 1993;83:290�4
- Greer IA, McLaren M, Calder A. Vaginal administration of PGE2 for induction of labor stimulates endogenous PGF2 production. Acta Obstet Gynecol Scand 1990;69: 621�5
- American College of Obstetricians and Gynecologists. Induction of Labor. ACOG Technical Bulletin No. 217. Washington, DC: ACOG, 1995
- Lyrenas S, Clason I, Ulmsten U. In vivo controlled release of PGE2 from a vaginal insert (0.8 mm, 10 mg) during induction of labour. Br J Obstet Gynaecol 2001;108: 169�78
- UpKeirse M. Prostaglandins in preinduction cervical ripening. Metanalysis of worldwide clinical experience. J Reprod Med 1993;38:89�100
- Westgate J, Williams JA. Evaluation of a controlled release vaginal prostaglandinE2 pessary with a retrieval systemfor the induction of labor. J Obstet Gynecol 1994;14:146�50
- Chyu JK, Strassner HT. Prostaglandin E2 for cervical ripening: a randomized comparisonof Cervidil versus Prepidil. Am J Obstet Gynecol 1997;177:606�15
- Calder AA, Johnston TA. Cervical ripening in nulliparae: release of prostaglandin E2 from �Propess� and efficacy and safety in the induction of labour. In Calder AA, Keirse MJNC, Mackenzie IZ, eds. Propess-RS � A Clinical Review. Haslemere: EuroMed, 1996:1�4
- Trofatter KF Jr. Endocervical prostaglandin E2 gel for preinduction cervical ripening: clinical trial results. J Reprod Med 1993;38:78�82
- Trofatter KF, Bowers D, Gall SA. Preinduction cervical ripening with prostaglandin E2 (Prepidil gel). Am J Obstet Gynecol 1985;153: 268�71
- Yonekura ML, Songester G, Smith-Wallace T. Preinduction cervical ripening with PGE2 intracervical gel. Am J Perinatol 1987;7: 189�93
- Nager CW, Key TC, Moore TR. Cervical ripening and labor outcome with preinduction intracervical prostaglandin E2 (Prepidil) gel. J Perinatol 1987;7: 189�93
- Witter F, Rocco L, Johnson T. A randomized trial of prostaglandin E2 in a controlled-released pessary for cervical ripening at term. Am J Obstet Gynecol 1992;66: 830�4
- Rayburn WF, Wapner FJ, Barss VA, et al. An intravaginal controlled-release prostaglandin E2 pessary for cervical ripening and initiation of labor at term. Obstet Gynecol 1992;79:374�9
- Wing DA, Jones MM, Rahall A, et al. A comparison of misoprostol and prostaglandinE2 gel for preinductioncervical ripening and labor induction. Am J Obstet Gynecol 1995; 172:1804�10
- Hughes EG, Kelly AJ, Kavanagh J. Dinoprostone vaginal insert for cervical ripening and labor induction: a metaanalysis. Obstet Gynecol 2001;97:847�55
- NuutilaM, Kajanoja P. Local administrationof prostaglandin E2 for cervical ripening and labour induction: the appropriate route and dose. Acta Obstet Gynecol Scand 1996;75:135�8
- Ottinger WS, Menard MK, Brost BC. A randomized clinical trial of prostaglandin E2 intracervical gel and a slow release vaginal pessary for preinduction cervical ripening. Am J Obstet Gynecol 1998;179: 349�53
- Blair FC, Tassone SA, PearmanCR, et al. Inducing labor with a sustained-release PGE2 vaginal insert. Experience at a community hospital. J Reprod Med 1998;43:408�12
- Rayburn WF. Clinical experience with a controlled-release, prostaglandin E2 intravaginal insert in the USA. Br J Obstet Gynaecol 1997;104:8�12
- Embrey M, Graham N, McNeill M. Induction of labour with a sustained release prostaglandin E2 vaginal pessary. Br J Obstet Gynaecol 1980;281: 901�6