Abstract: Background: Monitoring lung development is important for both birth preparation and counselling parents. Clinical procedures such as menstrual history, LMP, pelvic abdomen inspection, and date of quickening can be used to estimate when a foetus' lungs are fully developed. Extra diagnostic procedures include amniocentesis, x-rays, and ultrasounds.
Objective: to assess the non-invasive parameters to determine the fetal lung maturity by ultrasound.
Patients and Methods: it was is a cross-sectional study was conducted on Department of Obstetrics and Gynecology, Faculty of Medicine, Tanta University Hospitals on 75 pregnant cases. Study duration was from August 2020 till 30th May 2022.
Results: Correlation foetal biometry and Shake scores significantly differed among groups. Test, Relation between Placental grading and postnatal lung maturity, Relation between Shake test and postnatal lung maturity and the Diagnostic profile.
Conclusion: Based on the previous findings, ultrasound might be a useful method of evaluation of fetal lung maturity. Either of placental grading, free floating particles and shake test are good predictive tools for detecting lung maturity, with the superior hand for the floating particles.