Ott developed a score for evaluating the neonatal outcome for a growth-restricted fetus. The author is from Mercy Medical Center in Saint Louis, Missouri.
Patient selection: fetus with intra-uterine growth retardation (IUGR), defined as an estimated weight by ultrasound below the 10th percentile using the Hadlock equation
Exclusion: known congenital anomalies, known chromosomal abnormalities, delivery at less than 25 weeks gestation
(1) response to non-stress test (NST)
(2) size for gestational age
(3) amniotic fluid index (AFI)
(4) arterial findings on Doppler ultrasonography
(5) venous flow on Doppler ultrasonography
response to NST
size for gestational age
small for gestational age
not small for gestational age
amniotic fluid index
< 50 mm
>= 50 mm
shunting (diastolic flow in the middle cerebral artery)
absent diastolic flow
reverse diastolic flow
abnormal ductus venosus flow
reverse ductus venosus flow during A wave
umbilical vein pulsations
• The fetuses were selected based on the presence of IUGR. This would mean that most if not all should be small for gestational age.
total score =
= SUM(points for the 5 parameters)
• minimum score: 0
• maximum score: 11
• The higher the score the worse the fetal outcome.
• The score can be used in conjunction with the Biophysical Profile.
• The area under the ROC curve was 0.8.
To read more or access our algorithms and calculators, please log in or register.