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The placenta accreta spectrum (PAS) which includes accreta, increta, and percreta represents a significant obstetric challenge. PAS complicates as many as 1 per 500 pregnancies and this risk is increased with prior cesarean deliveries. Antenatal diagnosis of PAS allows for multidisciplinary planning and delivery before the onset of labor and/or vaginal bleeding. This approach has reduced maternal morbidity rates, including less blood loss, fewer transfusion requirements and, intraoperative urologic injuries as well as improve fetal outcome.
Ultrasound evaluation, with grayscale and color Doppler imaging, is the recommended first-line modality for diagnosing PAS. Grayscale ultrasound features suggestive of placenta accreta include an inability to visualize the normal retroplacental clear zone, irregularity and attenuation of the uterine-bladder interface, retroplacental myometrial thickness, presence of intraplacental lacunar spaces, and bridging vessels between the placenta and bladder wall when using color Doppler. Magnetic resonance imaging (MRI) has been used to predict the depth of placental invasion, but it is expensive and often not immediately available.
Recently, a new imaging technique utilizing three-dimensional (3D)/four-dimensional (4D) volume rendering ultrasound (VRU) was proposed as a promising tool for the preoperative diagnosis of placenta previa accerta spectrum. By using "crystal vue" and "realistic vue" volume rendering mode, it could detect 11 out of 12 cases (91.6%) of PAS which was subsequently confirmed during surgery. Accordingly, The aim of this study is to examine the diagnostic performance of 3D/four-dimensional (4D) volume rendering ultrasound (VRU) for placenta previa accerta spectrum in correlation with the clinical (operative) and pathological findings.
Placenta Accreta Spectrum
US scan with 3D/4D VRU software
Not yet recruiting
Published on BioPortfolio: 2020-01-22T12:12:56-0500
Placenta accreta is a substantially life threatening condition and one of the causes of maternal morbidity and mortality in the world. According to study done in United Kingdom, The estima...
Cases of previous cesarean with placenta previa anterior underwent cesarean section. Placenta accreta is diagnosed during cesarean section &confirmed by pathology. All complications are mo...
Evaluation of maternal morbidity and mortality of our novel surgical procedure for conservative management of placenta accreta in our tertiary referral institute.
Monocentric prospective observational study comparing the use of tourniquet in low uterus segement versus standard procedure in hysterectomy owing to placenta accreta
The aim of this study is to evaluate a novel protocol to conserve the uterus during Cesarean delivery indicated for placenta accreta.
Placenta accreta spectrum (PAS) affects approximately 3:1000 pregnancies. There is a paucity of data evaluating the effect of placental location on diagnosis, risk factors, and resultant outcomes in c...
The incidence of placenta accreta spectrum is rising. Management is most commonly with cesarean hysterectomy. These deliveries are often complicated by massive hemorrhage, urinary tract injury, and ad...
The development of new management strategies for women presenting with placenta accreta spectrum requires quality epidemiology data which have so far been limited by the high variability in clinical a...
To evaluate the impact of a training program using a systematic protocol on ultrasound signs of placenta accreta spectrum (PAS).
Abnormal placentation in which all or parts of the PLACENTA are attached directly to the MYOMETRIUM due to a complete or partial absence of DECIDUA. It is associated with POSTPARTUM HEMORRHAGE because of the failure of placental separation.
The use of combination of imaging techniques or platforms (e.g., MRI SCAN and PET SCAN) encompassing aspects of anatomical, functional, or molecular imaging methods.
Specifications and instructions applied to the software.
The act of testing the software for compliance with a standard.
Software capable of recognizing dictation and transcribing the spoken words into written text.
Obstetrics and gynaecology
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