ABOG Oral Boards Obstetrics Practice Test

The recommended dosage of Betamethasone for fetal lung maturity is 12 mg administered intramuscularly, with two doses given 24 hours apart. This regimen is standard practice for enhancing fetal lung development, particularly in preterm infants at risk for respiratory distress syndrome (RDS).

Betamethasone belongs to the class of corticosteroids, which work by accelerating the maturation of the fetal lungs and reducing the risk of complications associated with preterm birth. The two-dose schedule provides sufficient time for the medication to exert its effects on lung maturation, promoting the production of surfactant, which is critical for reducing alveolar collapse and improving respiratory function at birth.

This specific dosing is well-supported by clinical guidelines and research, establishing it as an effective intervention in obstetrical care for at-risk pregnancies. Other dosing regimens are generally not recommended as they may not achieve the optimal therapeutic effect or could lead to unnecessary exposure to corticosteroids.