| Domain | Common approach |
|---|---|
| Diabetes | Assess for early screening if additional risk factors; routine 24–28 week screening. |
| Preeclampsia prevention | Low-dose aspirin if criteria met (obesity is a moderate-risk factor; usually needs ≥2 moderate-risk factors). |
| Anatomic evaluation | Detailed anatomy often indicated; repeat scan if incomplete visualization. |
Apply individualized risk criteria; avoid “one-size-fits-all†prophylaxis.
Chorionic plate smaller than basal plate; folded/heaped edge creates a raised ring.
Similar concept but flatter transition; often less conspicuous on ultrasound.
| Prepregnancy BMI | When testing may be considered |
|---|---|
| 35.0–39.9 | Often considered starting ~37 weeks (if no other indications). |
| ≥40 | Often considered starting ~34 weeks (if no other indications). |
Use shared decision-making; start earlier for superimposed comorbidity or abnormal growth/fluid.
Any persistent or heavy bleeding warrants prompt evaluation; consider abruption differentials.
Leakage concern → triage for ROM assessment; confirm fluid method (MVP vs AFI).
If EFW <10% or falling percentiles → interval growth, UA Doppler, testing plan.
Plan for safe access, positioning, and communication; mitigate avoidable delays during urgent scenarios.
Avoid copying ICD codes that conflict with gestational age or clinical history.