الفهرس 
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Abstract
Placenta accreta is a condition in which the decidua basalis is absent or partially absent and there is aberrant adhesion of a portion or the entire placenta to the uterine wall. Massive bleeding after placental separation, which can result in shock, renal failure, adult respiratory distress syndrome, and even death, is one of the devastating consequences of placenta accrete. Severe cases may necessitate a hysterectomy; other grave consequences include ureteral or bladder damage and pulmonary embolism.
Aim and Objectives: to validate the uterine artery Doppler velocimetry’s value in Suspecting PAS in cases with placenta previa.
Methods: Between January 2023 and December 2023, a cross-sectional observational study was done at Minia Maternity University Hospital’s Department of Obstetrics and Gynecology. 50 pregnant women with placenta previa were involved. Cases underwent a thorough history taking, general examination and ultrasound with color Doppler evaluation.
Results: The mean age of cases was 31.6 ± 4.3, ranging from 22:41 years and 78% had average BMI.
The mean PI of uterine artery Doppler in PAS cases was 0.73±0.16, and the mean RI was 0.52±0.14. The mean PI of the non-morbidly adherent placenta was 0.87 ±0.40, and the mean RI was 0.62±0.30.
It was estimated that sensitivity of Pulsatility index in PAS diagnosis when cut off value less than 0.87 was 78.5 % while specificity was 50%, also sensitivity and specificity for Resistance index when cut off value less than 0.66 was 73% and 50% respectively
Conclusion: color Doppler and grayscale ultrasonography are useful tools for diagnosing PA. The uterine artery Doppler may be able to forecast PAS in cases with placenta previa.