Detection rate by ultrasound in fetuses with intrauterine growth restriction and small for gestational age

Objective: To analyze the detection rate of small for gestational age (SGA) fetuses and intrauterine growth restriction (IUGR) fetuses by ultrasound exploration. Methods: Cases and controls retrospective study. Material: Newborn (NB) of singleton pregnancies at term (between 37 and 42 weeks) at the Hospital Universitario San Cecilio between 2009 and 2010 both inclusive. Cases group: 98 at term NB with a birth weight < 2500 g; and an estimated fetal weight (EFW) by ultrasound in the 3rd trimester. Controls Group: 100 NB during the same period of time with birth weight between 3000-4000g, with EFW by ultrasound in the 3rd trimester randomly extracted. Results: The detection rate of small for gestational age infants born was 56.5 percent with 2 percent of incidence and the detection rate of intrauterine growth restriction type I was 11.1 percent with 0.1 percent of incidence within the total number of newborns in the period from 2009 to 2010. Conclusion: In our experience, EPF ultrasound in fetuses with weight below the 10th percentile has an error of 6 percent compared to birth weight, this allows proper identification of fetuses with SGA and IUGR.