Full formMedical & Health
EFWstands forEstimated Fetal Weight
Full Form of EFW
What is EFW?
Estimated Fetal Weight (EFW) refers to the calculated weight of a fetus during pregnancy, typically derived from ultrasound measurements of biometric parameters such as biparietal diameter, head circumference, abdominal circumference, and femur length. In India, EFW is a critical component of antenatal care and is used extensively in obstetric clinics, hospitals, and diagnostic centres to monitor fetal growth, detect intrauterine growth restriction, and assess macrosomia. This measurement helps doctors make informed decisions regarding delivery timing, mode of delivery, and management of high-risk pregnancies. EFW is computed using standardised formulas like Hadlock’s method and is reported alongside gestational age in ultrasound reports. For medical students and nursing professionals preparing for exams in India, understanding EFW calculation and its clinical interpretation is essential for subjects like obstetrics and gynaecology. The accuracy of EFW can be influenced by maternal factors, fetal position, and operator skill, making it a practical skill for ultrasonologists. Overall, EFW is a cornerstone of modern fetal surveillance in India, aiding thousands of pregnancies each year.
EFW का फुल फॉर्म
अनुमानित भ्रूण भार
Example
The ultrasound report showed an EFW of 2.5 kg at 36 weeks, which is within the normal range for the gestational age.
EFW — frequently asked questions
What is the full form of EFW?
The full form of EFW is Estimated Fetal Weight, a measurement used in ultrasound scans to estimate the weight of a fetus during pregnancy.
How is EFW calculated in Indian hospitals?
EFW is calculated using ultrasound measurements of fetal biometric parameters such as BPD, HC, AC, and FL, and then applying formulas like Hadlock's method. Indian hospitals commonly use automated software for this during routine antenatal scans.
Is EFW accurate for determining delivery date?
EFW is primarily used for weight estimation, not for determining delivery date. For dating, EDD (Estimated Date of Delivery) from earlier scans is more reliable. However, EFW helps assess growth and plan delivery in cases of suspected macrosomia or growth restriction.