Preferred Label : GAIA Level 1 Morbidly Adherent Placentation;
NCIt synonyms : Global Alignment of Immunization safety Assessment in pregnancy Level 1 Morbidly Adherent
Placentation;
NCIt related terms : Level 1 Morbidly Adherent Placentation;
NCIt definition : GAIA Level 1 Morbidly Adherent Placentation is defined by three criteria: first, evidence
of placenta previa by either a second- or third-trimester ultrasound or an MRI; second,
one of the following ultrasound features must be present: for Greyscale: a) Loss of
the retroplacental sonolucent zone; OR b) Irregular retroplacental sonolucent zone;
OR c) Thinning or disruption of the hyperechoic serosa-bladder interface; OR d) Presence
of focal exophytic masses invading the urinary bladder; OR e) Abnormal placental lacunae;
for Color Doppler: a) Diffuse or focal lacunar flow; OR b) Vascular lakes with turbulent
flow (peak systolic velocity over 15 cm/s); OR c) Hypervascularity of serosa-bladder
interface; OR d) Markedly dilated vessels over peripheral subplacental zone; for 3D
Power Doppler: a) Numerous coherent vessels involving the entire uterine serosa-bladder
junction (basal view); OR b) Hypervascularity (lateral view); OR c) Inseparable cotyledonal
and intervillous circulations, chaotic branching, and detour vessels (lateral view);
third, one of the following risk factors must be present: a) Prior cesarean delivery;
OR b) Prior uterine surgery (including endometrial ablation); OR c) Cesarean scar
pregnancy. Alternatively, Level 1 may be defined as morbidly adherent placentation
found on histology in a hysterectomy or partial wedge resection specimen.;
Alternative definition : GAIA: Level 1 Morbidly Adherent Placentation is defined by three criteria: first,
evidence of placenta previa by either a second- or third-trimester ultrasound or an
MRI; second, one of the following ultrasound features must be present: for Greyscale:
a) Loss of the retroplacental sonolucent zone; OR b) Irregular retroplacental sonolucent
zone; OR c) Thinning or disruption of the hyperechoic serosa-bladder interface; OR
d) Presence of focal exophytic masses invading the urinary bladder; OR e) Abnormal
placental lacunae; for Color Doppler: a) Diffuse or focal lacunar flow; OR b) Vascular
lakes with turbulent flow (peak systolic velocity over 15 cm/s); OR c) Hypervascularity
of serosa-bladder interface; OR d) Markedly dilated vessels over peripheral subplacental
zone; for 3D Power Doppler: a) Numerous coherent vessels involving the entire uterine
serosa-bladder junction (basal view); OR b) Hypervascularity (lateral view); OR c)
Inseparable cotyledonal and intervillous circulations, chaotic branching, and detour
vessels (lateral view); third, one of the following risk factors must be present:
a) Prior cesarean delivery; OR b) Prior uterine surgery (including endometrial ablation);
OR c) Cesarean scar pregnancy. Alternatively, Level 1 may be defined as morbidly adherent
placentation found on histology in a hysterectomy or partial wedge resection specimen.;
NCI Metathesaurus CUI : CL509622;
Origin ID : C128744;
UMLS CUI : C4289206;
Semantic type(s)
- concept_is_in_subset
