GAIA Level 1 Assessment of Preterm Labor

**Semantic type:** Classification

**Definition:** GAIA Level 1 Assessment of Preterm Labor is defined by three criteria: first, confirmed delivery of a fetus between 24 0/7 and 36 6/7 weeks gestation; second, greater than four uterine contractions per hour as determined by a tocodynometer OR transvaginal ultrasound during a two hour period; third, documented change in length or dilation of the cervix by physical examination, with clinical criteria obtained by digital examination, including: a) Cervical dilation of two centimeters or more at the internal os; b) Cervical length of one centimeter or less; c) greater than or equal to 50% effacement of the cervix.

**Synonyms:** - Global Alignment of Immunization safety Assessment in pregnancy Level 1 Assessment of Preterm Labor - Level 1 Assessment of Preterm Labor