Ultrasound Measurement of Foetal Kidney Length during Healthy Pregnancy: Relationship with Gestational Age.

Background: Foetal kidney length (FKL) measurements and comparisons to normal charts can be used to assess the development of the foetal kidneys throughout the entire course of pregnancy. This study was designed to assess FKL between 20 - 40 weeks' gestation, establish reference ranges for FKL and determine the relationship between FKL and gestational age (GA) in normal pregnancy.

Methods: This descriptive, cross-sectional study was conducted between March-August 2022, at the Obstetric Units and Radiology Departments of the two tertiary health facilities, one secondary facility and one radio-diagnostic facility in Bayelsa State, Southern Nigeria.