Foetal Age Determination
Methods for determining foetal age using ultrasound measurements
Ultrasound measurements such as CRL, BPD, FL, and AC are vital for determining foetal age and ensuring proper prenatal care.
Foetal Age Determination
Introduction
Determining the foetal age is a crucial aspect of prenatal care, aiding in the assessment of developmental milestones and ensuring a healthy pregnancy. Ultrasound remains the gold standard for foetal age determination.
Methods for Foetal Age Determination
Crown-Rump Length (CRL)
CRL measurement is widely used during the first trimester to estimate gestational age accurately.
- Measured between 6–14 weeks of gestation.
- Highly reliable in early pregnancy stages.
- Accuracy diminishes after 14 weeks as foetal movement increases.
Biparietal Diameter (BPD)
Measured from one side of the foetal head to the other, BPD is a standard method for estimating foetal age in the second and third trimesters.
Femur Length (FL)
Femur length correlates strongly with gestational age and is particularly useful when assessing growth abnormalities.
Abdominal Circumference (AC)
AC helps estimate foetal weight and growth trajectory, supporting age estimation in conjunction with other measurements.
Importance of Foetal Age Determination
Accurate foetal age determination assists in:
- Tracking foetal development.
- Identifying potential growth anomalies.
- Guiding medical interventions.
Conclusion
Ultrasound measurements provide valuable insights into foetal age and development, ensuring optimal prenatal care.
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