Placenta Praevia / Accreta Risk Assessment
Assesses risk of placenta praevia and placenta accreta spectrum (PAS) disorder. Guides third trimester USS and surgical planning.
Score interpretation
→ Routine antenatal care; repeat USS at 32 weeks if low-lying at 20 weeks; reassurance if fundal/posterior; standard delivery planning
→ Transvaginal USS at 32-34 weeks; if anterior low praevia with prior CS: MRI pelvis to exclude accreta; consultant-led care; cross-match blood; delivery at 36-37 weeks with senior team
→ Tertiary obstetric centre; MRI pelvis; multidisciplinary team (obs, urology, interventional radiology, blood bank); planned CS at 34-36 weeks; 6-10 units blood on standby; cell salvage; interventional radiology balloon occlusion; consent for hysterectomy
Interpretation bands for the Placenta Praevia Risk. Apply clinical judgement and local guidance.
References
Related
Curated clinical cross-links plus same-class fallbacks.
- Tranexamic Acid (Obstetric — PPH) · Antifibrinolytic
- Magnesium Sulphate (Obstetric — Eclampsia/Neuroprotection) · Anticonvulsant / Neuroprotectant
- Cefalexin (UTI / GBS Prophylaxis in Pregnancy) · First-Generation Cephalosporin — Obstetric Antibiotic
- Nitrofurantoin (UTI in Pregnancy) · Urinary Antibiotic — Obstetric
- Dexamethasone (Antenatal / OHSS / CAH) · Corticosteroid — Obstetric and Gynaecological
- Erythromycin (PPROM / GBS in Pregnancy) · Macrolide Antibiotic — Obstetric
- Major Trauma — Primary Survey (ATLS) · ATLS 10th Edition; JRCALC; NICE NG39
- Major Haemorrhage / Massive Transfusion · BCSH; RCOA; RCEM; RCS — BCSH Guidelines
- Burns — TBSA Estimation & Fluid Resuscitation · British Burn Association; EMSB; RCEM 2024
- Lower Gastrointestinal Bleed · NICE; BSG; ACPGBI — Commissioning Guide
- Acute Pancreatitis · NICE; IAP/APA; ACPGBI — CG104
- Hypertrophic Pyloric Stenosis · BAPS / RCPCH
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.