Ultrasound

Biology

Prenatal diagnosis

Fetus

Maternal morbidity

Radiology

Genetics

Placenta

Physics

Placenta accreta

Optics

Laparotomy

Obstetrics

Epidemiology

Medicine

Incidence (geometry)

Magnetic resonance imaging

Pregnancy

Pathology

Best Practice & Research Clinical Obstetrics & Gynaecology

The increasing incidence of caesarean delivery (CD) has resulted in an increase in placenta accreta spectrum (PAS), adversely impacting maternal outcomes globally. Currently, more than 90% of women diagnosed with PAS present with a placenta praevia (praevia PAS). Praevia PAS can be reliably diagnosed antenatally with ultrasound, and it is unclear whether magnetic resonance imaging improves diagnosis beyond what can be achieved by skilled ultrasound operators. Therefore, any screening programme for PAS will require improved training in the diagnosis of placental disorders and development of targeted scanning protocols. Management strategies for praevia PAS vary depending on the accuracy of prenatal diagnosis, findings at laparotomy and local surgical expertise. Current epidemiological data for PAS are highly heterogeneous, mainly due to wide variation in the clinical criteria used to diagnose the condition at birth. This significantly impacts research into all aspects of the condition, especially comparison of the efficacy of different management strategies.

New evidence-based diagnostic and management strategies for placenta accreta spectrum disorders