Small for gestational age newborns--does pre-recognition make a difference in pregnancy outcome?

Area of Science:

• Obstetrics and Gynecology
• Neonatology
• Fetal Medicine

Background:

• Small for gestational age (SGA) is a significant concern in late preterm and term pregnancies.
• Accurate prenatal identification of SGA is crucial for optimizing pregnancy outcomes.
• Intrauterine growth restriction (IUGR) is a common cause of SGA, necessitating careful monitoring.

Purpose of the Study:

• To evaluate the impact of pre-recognition of small for gestational age (SGA) on pregnancy and neonatal outcomes.
• To determine if suspected IUGR based on sonographic estimated fetal weight (EFW) influences delivery timing and mode.
• To assess the association between suspected SGA and adverse neonatal outcomes.

Main Methods:

• Retrospective analysis of SGA newborns (EFW <10th percentile) and non-SGA controls.
• Stratification of SGA cases into suspected IUGR and unsuspected IUGR groups based on pre-delivery sonography.
• Comparison of delivery characteristics and neonatal outcomes between suspected and unsuspected SGA groups.

Main Results:

• SGA was prenatally diagnosed in only 26% of cases.
• Women with suspected SGA delivered earlier, at lower birth weights, and had higher rates of labor induction and cesarean delivery.
• Suspected SGA was associated with adverse neonatal outcomes, but multivariate analysis indicated that suspected SGA, birthweight, gestational age, and spontaneous vaginal delivery were independently linked to improved composite neonatal outcomes.

Conclusions:

• Prenatal identification of SGA can potentially improve neonatal outcomes.
• SGA diagnosis alone is not an indication for intervention.
• Interventions for SGA without clear indication may lead to adverse pregnancy outcomes.