When Is Tocolysis Indicated?

Criteria that indicate consideration of tocolytic therapy include more than 6 contractions per hour resulting in a demonstrated cervical change or presumed prior cervical change (transvaginal cervical length < 2.5 cm, >50% cervical effacement, or cervical dilation

cervical dilation
Cervical dilation (or cervical dilatation) is the opening of the cervix, the entrance to the uterus, during childbirth, miscarriage, induced abortion, or gynecological surgery. Cervical dilation may occur naturally, or may be induced surgically or medically.
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≥2 cm).

When do you use Tocolysis?

Tocolytic medications for preterm labor aren't used before 24 weeks of pregnancy. In certain situations, your doctor may use it when you are at 23 weeks of pregnancy. Many doctors stop giving tocolytics after a woman has reached her 34th week of pregnancy, but some doctors begin tocolytics as late as 36 weeks.

Are there any contraindications to Tocolysis?

Contraindications to tocolytics

Pregnant person has severe pregnancy-induced hypertension, severe eclampsia/preeclampsia, active vaginal bleeding, placental abruption, a cardiac disease, or another condition which indicates that the pregnancy should not continue.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.