Plasma progesterone, estradiol, and unconjugated estriol concentrations in twin pregnancies: Relation with cervical length and preterm delivery.

Vilma L JohnssonNina G PedersenKatharina WordaElisabeth Krampl-BettelheimLillian SkibstedStefan HinterbergerIsolde StroblMaria E BowmanRoger SmithAnn TaborLine Rode

Published in: Acta obstetricia et gynecologica Scandinavica (2018)

Plasma concentrations of progesterone, estradiol, and unconjugated estriol at 18-24 weeks are not associated with cervical length or preterm delivery in twin pregnancies. Vaginal progesterone treatment does not increase the circulating progesterone concentration in twin pregnancies. Cervical length, but not hormone concentration, is predictive of preterm delivery in twin gestations.

Keyphrases

gestational age
preterm birth
estrogen receptor
low birth weight
pregnancy outcomes
preterm infants
combination therapy