GAIA Level 1 Second Trimester Spontaneous Abortion

**Semantic type:** Classification

**Definition:** GAIA Level 1 Second Trimester Spontaneous Abortion is defined by two criteria: first, gestational age is within the pre-defined range for the selected abortion definition as assessed by maternal and/or fetal parameters (Level 1-2) (Brighton Preterm Birth Gestational Age algorithm); second, at least one of the following requirements must be met: a) No visible heartbeat on ultrasound; OR b) Visible expulsion of pregnancy tissues/products of conception on examination of the cervix; OR c) Products of conception found on histopathological evaluation of uterine contents.

**Synonyms:** - Global Alignment of Immunization safety Assessment in pregnancy Level 1 Second Trimester Spontaneous Abortion - Level 1 Second Trimester Spontaneous Abortion