THREE DEVICES, THREE DIFFERENT REGULATORY CLAIMS Ava Bracelet FDA-cleared, 2021 Prediction AID only Not diagnostic, not contraceptive Natural Cycles FDA-cleared,
TRADITIONAL: CLINICAL FACTORS ONLY Maternal age, BMI, prior PE, chronic hypertension, diabetes Misses 46–60% of pregnancies that develop preeclampsia EMERGING:
WEARABLES CAN Track maternal sleep & HRV trends Monitor glucose (with CGM, for GDM) Support clinician-prescribed remote NST WEARABLES CANNOT
Day 1 Day 7 Day 14 Day 21 Day 28 Estrogen Progesterone LH surge Menstruation Follicular Ovulation Luteal Estrogen, progesterone,
