XML Persian Abstract Print

SKIMS, Srinagar , andrabi123@gmail.com
Abstract:   (1450 Views)
Background & Aims: To use ultrasonography to assess obstetric conjugate in pregnant women at term, and to study its relationship with mode of delivery and birth weight.
Materials & Methods: Hundred women at term, in early labor or admitted for induction of labor, entered the study. Longitudinal ultrasonic scanning by transabdominal 3.5 MHz curvilinear probe was performed for measurement of obstetric conjugate from a site most adjacent to pubic symphysis to the sacral promontory. Based on this obstetric conjugate measurement, women were divided into three groups namely those with obstetric conjugate < 10 cm, 10.1-12 cm, and > 12 cm. Mode of delivery and birth weight was noted. Mode of delivery and birth weight were correlated with ultrasonic obstetric conjugate. Ordinary least square method and logistic regression analysis were used for statistical analysis.
Results: The mean age of the women was 26.68 years. The mean obstetric conjugate of the women under study was 11.32 cm and the mean birth weight of newborns was 3.145 kg. The relation between birth weight of newborns of patients and ultrasound obstetric conjugate was a linear co-relation with p value < 0.001. The cesarean delivery rate was 58.3%, 5%, and 14% when ultrasonic obstetric conjugate was < 10 cm, 10.1-12 cm, and >12 cm respectively. The rate of cesarean delivery was higher in patients with ultrasonic obstetric conjugate < 10 cm as compared to others and the difference was statistically significant (p<0.001).
Conclusion: Ultrasonic obstetric conjugate measurement is a simple, noninvasive and safe method of assessing the anteroposterior diameter of the pelvic inlet. An ultrasonic obstetric conjugate of less than 10 cm should alert the obstetrician for a possibility of cesarean delivery.
Full-Text [PDF 277 kb]   (866 Downloads)    
Type of Study: orginal article | Subject: General

1. Wah YM, Chan YM, Sahota DS, Hui SY, Lau TK, Leung TY. Intra- and Inter- Observer Reproducibility of Ultrasound Measurements of Pelvic Inlet Diameter in Pregnant Women. Open J Obstet Gynaecol 2014; 4: 653-8. [DOI:10.4236/ojog.2014.411091]
2. Guerrero M, Ocampo J, Zapata M, Yepez E. Determination of anterior pelvic index (API) to predict a narrow pelvis in adolescent girls. Int J Morphol 2016; 34(3): 1158-63. [DOI:10.4067/S0717-95022016000300056]
3. Kordi M, Alijahan R. The diagnostic accuracy of external pelvimetry to predict dystocia in nulliparous women. Zahedan J Res Med Sci 2012; 14(6): 36-8. [scholar]
4. Sule ST, Matawal BI. Antenatal clinical pelvimetry in primigravidae and outcome of labour. Ann Afr Med 2005; 4(4): 164-7. [scholar]
5. Copel J, El-Sayed Y, Heine RP, Wharton KR. Guidelines for diagnostic imaging during pregnancy and lactation. Committee Opinion No. 723. American College of Obstetricians and Gynaecologists. Obstet Gynaecol 2017; 130: 210-6. [DOI:10.1097/AOG.0000000000002355]
6. Pattinson RC. Pelvimetry of Fetal Cephalic Presentations at or Near Term.Cochrane Database Syst Rev 2000; (2): CD000161. [pubmed]
7. Daghighi MH, Poureisa M, Ranjkesh M. Association between Obstetric Conjugate Diameter Measured by Transabdominal Ultrasonography during Pregnancy and the Type of Delivery. Iran J Radiol 2013; 10(3): 185-7. [DOI:10.5812/iranjradiol.13191]
8. Sonal B, Shalini R, Chandra SK, Neerja G. Ultrasonic obstetric conjugate measurement: a practical pelvimetric tool. J Obstet Gynaecol India 2006; 56(3): 212-5. [https://www.semanticscholar.org/paper/Ultrasonic-obstetric-conjugate-measurement-%3A-a-tool-Sonal-Sh]
9. Katanozaka M, Yoshinaga M, Fuchiwaki K. Measurement of obstetric conjugate by ultrasonic tomography and its significance. Am J Obstet Gynaecol 1999; 180(1): 159-62. [DOI:10.1016/S0002-9378(99)70168-7]
10. Fine EA, Bracken M, Berkowitz RL. An evaluation of the usefulness of x-ray pelvimetry: comparison of the Thoms and modified Ball methods with manual pelvimetry. Am J Obstet Gynaecol 1980; 137(1): 15-20. [DOI:10.1016/0002-9378(80)90378-6]

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.