PREDICTION OF MODE OF DELIVERY BY ANGLE OF PROGRESSION BEFORE THE ONSET OF LABOUR IN FULL TERM GRAVID WOMEN

Abstract

Background- Fetal head descent can be assessed by the ultrasound parameter, the angle of progression (AOP). Our aim was to assess Angle of progression by transperineal ultrasound, anterpartum before onset of labor and whether a narrow angle has association with a higher rate of Caesarean section.

Method- In our study, after proper selection by inclusion and exclusion criteria, a single observer will be performing the transperineal ultrasound examination and single obstetrician will be assessing the pelvis by clinical pelvimetry. Uncomplicated full term pregnant women, with cephalic presentation will be recruited for the study. Gestational age will be determined by LMP or first trimester ultrasound scan. Labor and delivery will be conducted by any person who will be blinded to AOP. Outcome will be assessed in terms of mode of delivery in relation to Angle of progression, validity of measuring Angle of progression (AOP) in full term gravid women before they go into labor, clinical pelvimetry in full term gravid women and comparison of clinical pelvimetry and AOP in relation to the mode of delivery.

Results: Will be obtained after statistical analysis by the student t test and chi square test using SPSS software Chicago, USA.