Prediction of fetal macrosomia using sonographically measured abdominal subcutaneous tissue thickness
✍ Scribed by Petrikovsky, Boris M.; Oleschuk, Catherine; Lesser, Martin; Gelertner, Natalie; Gross, Beth
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 93 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0091-2751
No coin nor oath required. For personal study only.
✦ Synopsis
Purpose:
We assessed the usefulness of sonographic measurement of abdominal subcutaneous tissue thickness in predicting fetal macrosomia (weight > 4,000 g).
Methods:
Abdominal subcutaneous tissue thickness was measured sonographically in 133 term fetuses. all studied fetuses were delivered within 72 hours after the measurements were taken.
Results:
One hundred thirteen fetuses were normal size, and 20 were macrosomic. the fetal abdominal subcutaneous tissue thickness ranged between 3 and 18 mm in all fetuses, with a mean measurement of 8.4 +/- 2.7 mm (standard deviation). the mean tissue thickness differed significantly between normal and macrosomic fetuses (7.0 mm versus 12.4 mm, respectively; p < 0.0001). there was a significant positive correlation between the abdominal subcutaneous tissue thickness and the birth weight (r = 0.67, p < 0.0001). the negative predictive value for a range of cut-off points between 8 and 13 mm varied between 84.3% and 100% (for prevalence rates of macrosomia of 5-25%). however, the positive predictive value was less than 50% for cut-off values below 11 mm.
Conclusions:
Sonographic measurement of the subcutaneous tissue thickness of the fetal abdomen is useful for ruling out macrosomia.