Progesterone levels in preterm labor are not affected by ritodrin treatment.


Several in vitro studies reported on increased levels of progesterone secretion from placental tissue. This was not tested in vivo. To study the issue we examined progesterone levels in women presenting with premature labor before treatment, and 24 h and 48 h after beginning ritodrin treatment. A control group consisted of women treated with indomethacin… (More)


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