The fetus that is small for gestational age

Area of Science:

• Perinatal Medicine
• Fetal Development
• Obstetrics

Background:

• Symmetric small for gestational age (SGA) fetuses pose significant management challenges.
• Fetal growth restriction impacts morbidity and mortality throughout life.
• Differential diagnosis includes constitutional smallness, pathology, or incorrect dating.

Purpose of the Study:

• To outline the diagnostic and management strategies for symmetric SGA fetuses.
• To highlight the role of ultrasonography and other imaging modalities.
• To discuss the implications for perinatal outcome and delivery decisions.

Main Methods:

• Ultrasonographic examination for anomaly detection, infection signs, and serial growth assessment.
• Utilizing individualized fetal growth curves to improve biometric accuracy.
• Employing uterine artery Doppler for perinatal outcome prediction.
• Magnetic resonance imaging (MRI) for anomaly evaluation.

Main Results:

• Ultrasonography is key for detecting anomalies and assessing fetal growth.
• Individualized growth curves enhance biometric accuracy.
• Uterine artery Doppler aids in predicting poor perinatal outcomes.
• MRI is valuable for evaluating fetal anomalies.

Conclusions:

• Symmetric SGA diagnosis requires differentiating between constitutional size, pathology, and dating errors.
• Accurate fetal biometry and serial growth assessment are crucial.
• Uterine artery Doppler and MRI are important surveillance tools.
• Cesarean section is not universally indicated for all symmetric SGA fetuses due to guarded prognoses.