References
[1] Abou Zahr, C. (1998) Prolonged and Obstructed Labour. In: Murray, C.J.L. and Lopez, A.D., Eds., Health Dimensions of Sex and Reproduction: The Global Burden of Sexually Transmitted Diseases, Maternal Conditions, Perinatal Disorders, and Congenital Anomalies, WHO, Geneva.
[2] Athaus, J.E., Peterson, S., Driggers, R., Cootauco, A., Bienstock, J.L. and Blakemore, K.J. (2006) Cephalopelvic Disproportion Is Associated with Altered Uterine Contraction Shape in the Active Phase of Labor. American Journal of Obstetrics & Gynecology, 295, 729-742.
[3] Neilson, J.P., Lavender, T., Quenby, S. and Wray, S. (2003) Obstructed Labour. British Medical Bulletin, 67, 191-204.
http://dx.doi.org/10.1093/bmb/ldg018
[4] Thurnau, G.R., Scates, D.H. and Morgan, M.A. (1991) The Fetal-Pelvic Index: A Method of Identifying Fetal-Pelvic Disproportion in Women Attempting Vaginal Birth after Previous Cesarean Delivery. American Journal of Obstetrics & Gynecology, 165, 353-358.
http://dx.doi.org/10.1016/0002-9378(91)90091-5
[5] Neilson, X.J.P., Lavender, T., Quenby, S. and Wray, S. (2003) Obstructed Labour. British Medical Bulletin, 67, 191-204.
http://dx.doi.org/10.1093/bmb/ldg018
[6] Mahler, H. (1987) The Safe Motherhood Initiative: A Call to Action. Lancet, 1, 668-670.
http://dx.doi.org/10.1016/S0140-6736(87)90423-5
[7] World Health Organization (1991) Maternal Mortality Ratios and Rates—A Tabulation of Available Information. 3rd Edition, WHO, Geneva.
[8] Zhu, B.P., Grigorescu, V., Le, T., Lin, M., Copeland, G., Barone, M. and Turabelidze, G. (2006) Labor Dystocia and Its Association with Interpregnancy Interval. American Journal of Obstetrics & Gynecology, 195, 121-128.
http://dx.doi.org/10.1016/j.ajog.2005.12.016
[9] Main, E.L., Bloomfield, L. and Hunt, G. (2004) Development of a Large-Scale Obstetric Quality Improvement Program That Focused on the Nulliparous Patient at Term. American Journal of Obstetrics & Gynecology, 190, 1747-1756; Discussion 1756-1758.
[10] Coonrod, D.V., Drachman, D., Hobson, P., et al. (2008) Nulliparous Term Singleton Vertex Cesarean Delivery Rates: Institutional and Individual Level Predictors. American Journal of Obstetrics & Gynecology, 198, 694.e1-694.e11.
[11] Chen, G., Uryasev, S. and Young, T.K. (2004) On Prediction of Cesarean Delivery Risk in a Large Private Practice. American Journal of Obstetrics Gynecology, 191, 617-625.
http://dx.doi.org/10.1016/j.ajog.2004.07.004
[12] Yeo, L. and Romero, R. (2009) Sonographic Evaluation in the Second Stage of Labor to Improve the Assessment of Labor Progress and Its Outcome. Ultrasound in Obstetrics Gynecology, 33, 253-258.
http://dx.doi.org/10.1002/uog.6336
[13] Speert, H. (1996) Gustav Adolf Michaelis and Michaelis’ Rhomboid. In: Obstetric and Gynecologic Milestones Illustrated, Parthenon Publishing Group, New York, 162-165.
[14] Maharaj, D. (2010) Assessing Cephalopelvic Disproportion: Back to the Basics. Obstetrical & Gynecological Survey, 65, 337-395.
http://dx.doi.org/10.1097/OGX.0b013e3181ecdf0c
[15] Thomas, S.M., Bees, N.R. and Adam, E.J. (1998) Trends in the Use of Pelvimetry Techniques. Clinical Radiology, 53, 293-295.
http://dx.doi.org/10.1016/S0009-9260(98)80130-X
[16] Laube, D.W., Varner, M.W. and Cruikshank, D.P.A. (1981) Prospective Evaluation of X-Ray Pelvimetry. JAMA, 13, 2187-2188.
http://dx.doi.org/10.1001/jama.1981.03320190045026
[17] Fox, L.K., Hierta-Enochian, G.S., Hamlin, J.A. and Katz, V.L. (2004) The Magnetic Resonance Imaging-Based FetalPelvic Index: A Pilot Study in the Community Hospital. American Journal of Obstetrics & Gynecology, 190, 1679-1688.
http://dx.doi.org/10.1016/j.ajog.2004.02.044
[18] Zaretsky, M.V., Alexander, J.M., McIntire, D.D., Hatab, M.R., Twickler, D.M. and Leveno, K.J. (2005) Magnetic Resonance Imaging Pelvimetry and the Prediction of Labor Dystocia. Obstetrics & Gynecology, 106, 919-926.
http://dx.doi.org/10.1097/01.AOG.0000182575.81843.e7
[19] Nizard, J., Haberman, S., Paltieli, Y., et al. (2009) Determination of Fetal Head Station and Position during Labor: A New Technique That Combines Ultrasound and a Position-Tracking System. American Journal of Obstetrics Gynecology, 200, 404.e1-5.
[20] Haberman, S., Paltieli, Y., Gonen, R., Ohel, G., Ville, Y. and Nizard, J. (2011) Association between Ultrasound-Based Assessment of Fetal Head Station and Clinically Assessed Cervical Dilatation. Ultrasound in Obstetrics Gynecology, 37, 709-711.
http://dx.doi.org/10.1002/uog.8875
[21] Barron, L.R., Hill, R.O. and Linklettert, A.M. (1964) X-Ray Pelvimetry. Canadian Medical Association Journal, 91, 1209-1212.
[22] Huerta-Enochian, G.S., Katz, V.L., Fox, L.K., Hamlin, J.A. and Kollath, J.P. (2006) Magnetic Resonance-Based Serial Pelvimetry: Do Maternal Pelvic Dimensions Change during Pregnancy? American Journal of Obstetrics Gynecology, 194, 1689-1695.
http://dx.doi.org/10.1016/j.ajog.2006.03.008
[23] Kennelly, M.M., Anjum, R., Lyons, S. and Burke, G.J. (2003) Postpartum Fetal Head Circumference and Its Influence on Labour Duration in Nullipara. Journal of Obstetrics & Gynaecology, 23, 496-499.
http://dx.doi.org/10.1080/0144361031000153701
[24] Ferguson 2nd, J.E., Newberry, Y.G., De Angelis, G.A., Finnerty, J.J., Agarwal, S. and Turkheimer, E. (1998) The Fetal-Pelvic Index Has Minimal Utility in Predicting Fetal-Pelvic Disproportion. American Journal of Obstetrics Gynecology, 179, 1186-1192.
http://dx.doi.org/10.1016/S0002-9378(98)70129-2
[25] Peaceman, A.M., Gersnoviez, R., Landon, M.B., Spong, C.Y., Leveno, K.J., Varner, M.W., Rouse, D.J., Moawad, A.H., Caritis, S.N., Harper, M., Wapner, R.J., Sorokin, Y., Miodovnik, M., Carpenter, M., O’Sullivan, M.J., Sibai, B.M., Langer, O., Thorp, J.M., Ramin, S.M. and Mercer, B.M. (2006) The MFMU Cesarean Registry: Impact of Fetal Size on Trial of Labor Success for Patients with Previous Cesarean for Dystocia. American Journal of Obstetrics Gynecology, 195, 1127-1131.
http://dx.doi.org/10.1016/j.ajog.2006.06.003
[26] Chen, G., Uryasev, S. and Young, T.K. (2004) On Prediction of the Cesarean Delivery Risk in a Large Private Practice. American Journal of Obstetrics & Gynecology, 191, 617-625.
http://dx.doi.org/10.1016/j.ajog.2004.07.004
[27] Roshanfekr, D., Blakemore, K.J., Lee, J., Hueppchen, N.A. and Witter, F.R. (1999) Station at Onset of Active Labor in Nulliparous Patients and Risk of Cesarean Delivery. Obstetrics Gynecology, 93, 329-331.
http://dx.doi.org/10.1016/S0029-7844(98)00451-7
[28] Falzone, S., Chauhan, S.P., Mobley, J.A., Berg, T.G., Sherline, D.M. and Devoe, L.D. (1998) Unengaged Vertex in Nulliparous Women in Active Labor. A Risk Factor for Cesarean Delivery. The Journal of Reproductive Medicine, 43, 676-680.
[29] Debby, A., Rotmensch, S., Girtler, O., Sadan, O., Golan, A. and Glezerman, M. (2003) Clinical Significance of the Floating Fetal Head in Nulliparous Women in Labor. The Journal of Reproductive Medicine, 48, 37-40.
[30] Dupuis, O., Silveira, R., Zentner, A., et al. (2005) Birth Simulator: Reliability of Transvaginal Assessment of Fetal Head Station as Defined by the American College of Obstetricians and Gynecologists Classification. American Journal of Obstetrics Gynecology, 192, 868-874.
http://dx.doi.org/10.1016/j.ajog.2004.09.028
[31] Carollo, T.C., Reuter, J.M., Galan, H.L. and Jones, R.O. (2004) Defining Fetal Station. American Journal of Obstetrics Gynecology, 191, 1793-1796.
http://dx.doi.org/10.1016/j.ajog.2004.07.069
[32] Dietz, H.P. and Lanzarone, V. (2005) Measuring Engagement of the Fetal Head: Validity and Reproducibility of a New Ultrasound Technique. Ultrasound in Obstetrics Gynecology, 25, 165-168.
http://dx.doi.org/10.1002/uog.1765
[33] Henrich, W., Dudenhausen, J., Fuchs, I., Kamena, A. and Tutschek, B. (2006) Intrapartum Translabial Ultrasound (ITU): Sonographic Landmarks and Correlation with Successful Vacuum Extraction. Ultrasound in Obstetrics Gynecology, 28, 753-760.
http://dx.doi.org/10.1002/uog.3848
[34] Eggebo, T.M., Heien, C., Okland, I., Gjessing, L.K., Romundstad, P. and Salvesen, K.A. (2008) Ultrasound Assessment of Fetal Head-Perineum Distance before Induction of Labor. Ultrasound in Obstetrics Gynecology, 32, 199-204.
http://dx.doi.org/10.1002/uog.5360
[35] Kalache, K.D., Duckelmann, A.M., Michaelis, S.A., Lange, J., Cichon, G. and Dudenhausen, J.W. (2009) Transperineal Ultrasound Imaging in Prolonged Second Stage of Labor with Occipitoanterior Presenting Fetuses: How Well Does the “Angle of Progression” Predict the Mode of Delivery? Ultrasound in Obstetrics Gynecology, 33, 326-330.
http://dx.doi.org/10.1002/uog.6294
[36] Levy, R., Zaks, S., Ben-Arie, A., Perlman, S., Hagay, Z. and Vaisbuch, E. (2012) Can Angle of Progression in Pregnant Women before Onset of Labor Predict Mode of Delivery? Ultrasound in Obstetrics Gynecology, 40, 332-337.
http://dx.doi.org/10.1002/uog.11195
[37] Keller, T.M., Rake, A., Michel, S.C., et al. (2003) Obstetric MR Pelvimetry: Reference Values and Evaluation of Interand Intraobserver Error and Intraindividual Variability. Radiology, 227, 37-43.
http://dx.doi.org/10.1148/radiol.2271011658
[38] Sporri, S., Theony, H.C., Raio, L., Lachat, R., Vock, P. and Shneider, H. (2002) MR Imaging Pelvimetry: A Useful Adjunct in the Treatment of Women at Risk for Dystocia? AJR, 179, 137-143.
http://dx.doi.org/10.2214/ajr.179.1.1790137