Most of the time fundal height gives you extra peace of mind that your babys doing well. Three possible biases should however be discussed. Slow fetal growth intrauterine growth restriction. Red for s f 28cm yellow for s f 2831 cm and green for s f 31 cm. So the better a doctor can predict birth weight the easier the delivery may be. The sensitivity and specificity of symphysis fundal height in identifying small and large for gestational age babies were determined.

Birth weight g gestational age days x 938 0264 x fetal sex 0000233 x maternal height cm x. For the prediction of lbw the critical limit of the fundal height was 31 cm meaning that a s f distance of more than 31 cm is reasonably safe while lesser values predict a higher chance of a lbw infant from these observations the use of a colour coded tape by peripheral health workers and traditional birth attendants is suggested. One study found prenatal ultrasound diagnosis of prediction of birth weight to be no more accurate than maternal or clinical predictions of infant birth weight 39. While fundal height measurements correlated well with birth weight the sensitivity is too low and the number of false positives too high for fundal height measurement alone to be clinically useful. While symphysis fundal height measurements correlated well with birth weight the sensitivity was too low and the number of false positives too high for symphysis fundal height measurement alone to be clinically useful. Fundal height is the measurement in centimeters from your pubic bone to the top of your uterus.

A fundal height measurement that doesnt match up with gestational age might be a warning sign according to babycenter but its oftentimes within the range of normal and is not cause for alarm. While symphysis fundal height measurements correlated well with birth weight the sensitivity was too low and the number of false positives too high for symphysis fundal height measurement alone to be clinically useful. Acog advises an accurate diagnosis of macrosomia can be made only by weighing the newborn after delivery 55 reviewed 3312019. Mothers who have a fundal height in the red zone are at risk of delivering lbw infants. Your doctor will compare your fundal height to the average fundal height of moms at your same week of pregnancy. Its used to help estimate your babys length and weight.

A fundal height that measures smaller or larger than expected or increases more or less quickly than expected could indicate. A fundal height measurement might be less accurate however if you have a body mass index of 30 or higher obesity or have a history of fibroids. Conversely we found the accuracy of fundal height was similar to that of abdominal circumference in predicting birth weight but that ultrasound imaging had a better diagnostic value than fundal height for the prediction of high and low birth weights. Does fundal height predict birth weight.

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