• | Unsure of LMP and unwilling to have USS at ≤ 20 weeks |
---|---|
• | ≥ 3 miscarriages |
• | ≥3 terminations |
• | Known or suspected major fetal anomaly/abnormal karyotype |
• | Essential hypertension treated pre-pregnancy |
• | Moderate-severe hypertension at booking (BP >160/100 mmHg) |
• | Diabetes |
• | Renal disease |
• | Systemic Lupus Erythematosus |
• | Anti-phospholipid syndrome |
• | Sickle cell disease |
• | HIV positive |
• | Major uterine anomaly |
• | Cervical suture in situ |
• | Knife cone biopsy |
• | Long term steroids |
• | Treatment with low-dose aspirin |
• | Treatment with heparin/low molecular weight heparin |