Estimated fetal weight has a very important for planning whether the vaginal delivery is possible or not. There are various methods to determine the estimated fetal weight, ranging from conventional such using symphysis-fundal height and abdominal circumference measurements to more modern method such as using ultrasound examination. The estimated fetal weight can be calculated using several formulas such as the Johnson-Toshack, Niswander and Risanto formulas. The aim of this study was to compare the estimated fetal weight using the Johnson-Toshack, Niswander and Risanto formulas using simple symphysis-fundal height measurements. In this retrospective cross-sectional study, we assessed the medical records of 44 patients at Arifin Achmad Hospital of Indonesia from November 2020 to August 2021. The performance of the formulas was assessed using independent t-test. Our data suggested there was no significant difference between estimated fetal weight using Johnson formula (p=1.000), Risanto formula (p=1.000) and Niswander formulas compared to actual fetal birth weight (p=0.156). In conclusion, Johnson-Toshack, Niswander and Risanto formula could be used by medical personnel to calculate the estimated fetal weight in order to plan the delivery methods. This is crucial in particular in areas with limited resources such as ultrasound to calculate fetal weight in Indonesia.

Estimated fetal weight

Johnson-Toshack

Niswander

Risanto