Masood Humaira, Abid Rubaba, Ahmed Mohammad, Mehmood Munir
Humaira Masood Senior Registrar, Department of Obstetrics and Gynaecology, Benazir Bhutto Hospital Rawalpindi Medical University, Rawalpindi, Pakistan.
Rubaba Abid Associate Professor, Department of Obstetrics and Gynaecology, Benazir Bhutto Hospital Rawalpindi Medical University, Rawalpindi, Pakistan.
Pak J Med Sci. 2025 Jan;41(1):147-150. doi: 10.12669/pjms.41.1.9930.
The objective of the study was to assess whether the measurement of the angle of progression in nulliparous women in labour can predict the mode of delivery.
This prospective observational study was conducted at Benazir Bhutto Hospital, Rawalpindi Medical University from 16 February to 25 March 2024. Nulliparous pregnant women in the active first stage of labour with singleton pregnancy and cephalic presentation were included in the study after taking informed consent. The angle of progression (AOP) was measured by trans-perineal ultrasound using the curvilinear probe. The primary outcome was the mode of delivery in relation to angle of progression.
Seventy-eight patients were included in the study. Angle of progression was wider in patients who underwent vaginal delivery and narrower in patients who underwent cesarean section. AOP of 121 or more is associated with 86.6% of vaginal delivery and an angle of progression of 70 or less is associated with 83.3% of cesarean section.
The angle of progression is a reliable tool for predicting the mode of delivery. Wider angle is associated with vaginal delivery and a narrower angle is associated with cesarean section.
本研究的目的是评估未产妇分娩时进展角度的测量是否能预测分娩方式。
这项前瞻性观察性研究于2024年2月16日至3月25日在拉瓦尔品第医科大学贝娜齐尔·布托医院进行。在获得知情同意后，纳入处于活跃第一产程、单胎妊娠且头先露的未产妇。使用曲线探头经会阴超声测量进展角度（AOP）。主要结局是与进展角度相关的分娩方式。
78名患者纳入研究。经阴道分娩患者的进展角度较宽，剖宫产患者的进展角度较窄。进展角度为121或更大与86.6%的阴道分娩相关，进展角度为70或更小与83.3%的剖宫产相关。
进展角度是预测分娩方式的可靠工具。角度较宽与阴道分娩相关，角度较窄与剖宫产相关。
