Preterm Labor Risk Assessment

Prior preterm birth <37 wks Prior preterm birth <34 wks Prior LEEP / cone biopsy ≥2 prior spontaneous abortions Prior cervical cerclage Mid-trimester fetal loss Müllerian anomaly (uterine) IVF / ART conception

Multiple gestation (twins+) PPROM (membrane rupture) Current cervical/vaginal infection Bacterial vaginosis this pregnancy Polyhydramnios / oligohydramnios Placenta previa / abruption Large uterine fibroid Current cerclage in place

Pre-existing / gestational diabetes Chronic hypertension / preeclampsia Thyroid disorder (uncontrolled) Thrombophilia / clotting disorder Autoimmune disease (SLE, APS, etc.) Chronic renal disease Significant anemia (Hgb <9 g/dL)

Smoking (active) Substance / drug use High psychosocial stress Inadequate antenatal care Socioeconomic disadvantage Heavy physical labor / prolonged standing Adolescent mother (<18 yrs) Advanced maternal age (≥35 yrs)