View clinical trials related to Placenta Accreta.
Filter by: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. The placenta accreta index (PAI) score (a nine-point score) was proposed in 2015 to predict PAS based on US parameters in a high-risk population by retrospective data analysis. The probability of histological invasion was found to increase with increasing the PAI score. This study aimed to prospectively evaluate the diagnostic performance of the PAI in the prediction of PAS in relation to histopathological findings.
This study will be conducted on a group of patients undergoing repeat elective caesarean delivery attending at Mansoura university hospital. - This study will investigate patients' attending to the antenatal care clinic for elective termination of pregnancy with history of previous one caesarean delivery in the period between (January 2020 till January 2021).
Placental borders and mapping by ultrasonography and Doppler ultrasonography (placental mapping) preop. And verified intraoperatively . bladder peritoneal dissection till the level of internal Os Uterus is incised away from the placenta - Baby was delivered , the uterus is exteriorised and 4-5 towel clips are applied rapidly control uterine incision site bleeding . Twenty units of diluted oxytocin and 100 to 200 cc, 37°C of heated saline were infused from here, and then the cord was clamped . Then we proceed to systemically devascularize the uterus with the placenta in site After control of both superior vesical vessels Finding a fresh noninvaded plan between isthmocervical junction and posterior bladder wall aided by filling the bladder 150 cc saline Then cervical stump control sutures and severing the specimen above the clamps Now the placenta is only attached to the bladder , apply intestinal clamp or foley cath on the bladder below the level of invasion if feasible to reduce bleeding - cut through the placenta, heavy back flow bleeding of old blood stored in the placenta will be noticed , but there is no hemodynamic change since the cervical stump is already severed , dissect the bladder with a large safety margin cutting through the placenta.. Then in cases with hematuria saline irrigation of the bladder is usually enough to clear the hematuria 15 out of 20 In cases with larger blood clots in the bladder cystoscope is done avoiding the need for cystotomy - lastly removal of excessive placental tissues from the bladder wall by gentle swabbing or trimming, then individual control of bleeders and plication of the invaded area with seromuscular purse string sutures around said area , in cases of large areas , bladder mobilization is imperative to increase bladder capacity
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.
The placenta accreta is defined as a placenta that is abnormally adherent to the myometrium. It can thus invade the entire thickness of the myometrium (placenta increta) or even exceed the serosa and invade neighboring organs (placenta percreta). It is a rare obstetric pathology with significant morbidity, and its management most often requires hemostatic hysterectomy. Its frequency has increased significantly in recent decades due to the increased rate of caesareans. The maternity center of Tunis ( CMNT ) is a level 3 maternity center, supporting over 12 000 births yearly, where the caesarean section's rate is very high, close to 45% of deliveries. Recently we noted an increase in abnormal placental invasion incidence : in 2018, we report over 60 cases of placenta accreta,increta and percreta. Early detection of these patients can help reduce potential risks. Ultrasound and MRI are the main diagnostic tools, but each one has weaknesses. Biological approch of this diagnosis is not well studied. Recently, BNP has been shown to be associated with increased angiogenesis. Because placenta accreta is characterized by abnormal uteroplacental neovascularization, it has been hypothesized that serum BNP levels may be related to abnormal invasion of the placenta. In the literature, only one study investigated the relationship between cardiac biomarkers (Pro-BNP, CK, CK-MB and troponins) and abnormalities of placental adhesion. The main conclusion was that the Pro-BNP could predict placental accretisation. Thus, the BNP as a mean of screening, could enrich our diagnostic arsenal. The purpose of our study is to determine whether or not BNP can predict abnormal placental invasion during pregnany.
The rotational thromboelastogram (ROTEM) test can be performed on patients with placenta previa/accreta/increta/percreta who have a high likelihood of massive bleeding, and the predictors can be identified by comparing the patients who actually show massive bleeding with those who do not. Applying these predictive factors to pregnant women undergoing cesarean section after diagnosis of placenta previa/accreta/increta/percreta, it will be advantageous for the perioperative management because it is possible to select pregnant women with a factor of massive bleeding.
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 urinary tract injury as well as improve fetal outcome. Ultrasound evaluation is the recommended first-line modality for diagnosing PAS. Ultrasound features suggestive of PAS include loss of the normal retroplacental clear zone, attenuation of the uterine-bladder interface, reduced retroplacental myometrial thickness, presence of intraplacental lacunar spaces, and bridging vessels between the placenta and bladder. A systematic review reported that the antenatal diagnosis of PAS significantly lowered the rate of urinary tract injury (from 63% to 39%) during cesarean hysterectomies in these cases. Unlike other elective cesarean hysterectomies, cesarean hysterectomy with a placenta previa increta/percreta, is more difficult. There is a greater need to both keep a margin from the vascular cervical-placental mass and simultaneously protect the urinary bladder. Case series reported that bladder filling helps the surgeon to more clearly identify the planes of dissection and secure the engorged aberrant vessels, thereby reduces bladder injury. Accordingly, a prospective randomized study in pregnant patients with placenta previa increta/percreta undergoing elective cesarean hysterectomy will be conducted to address this important issue.
Placental borders and mapping by ultrasonography and Doppler ultrasonography (placental mapping) preop. And verified intraoperatively . bladder peritoneal dissection till the level of internal Os Uterus is incised away from the placenta *Baby was delivered , the uterus is exteriorised and 4-5 towel clips are applied rapidly control uterine incision site bleeding . Twenty units of diluted oxytocin and 100 to 200 cc, 37°C of heated saline were infused from here, and then the cord was clamped . Then we proceed to systemically devascularize the uterus with the placenta in site - internal iliac artery distal ligation: - broad ligament and ureteric dissection: - uterine vessels : - posterior uterine wall compression suture : - The utero-ovarian anastomosis branches are spared to keep blood flowing to the uterus. - if the bladder was not fully dissected from the anterior uterine wall , now we complete the dissection, - anterior uterine wall compression suture : - now , we excise the invaded , irreparable anterior wall segment, with the - then separation of the placenta manually - if there's still mild bleeding from the uterine placental bed another full myometrial thickness anterior or posterior uterine wall transverse sutures are applied below or above the placental bed site to control bleeding until it's deemed acceptable - in cases with separate fundal anterior incision, the high incision is repaired in layers first to give more time to compress and monitor the lower segment - refashioning of the Lower segment , repair transversely is usually done,
Evaluation of maternal morbidity and mortality of our novel surgical procedure for conservative management of placenta accreta in our tertiary referral institute.
Placenta Accreta Spectrum (PAS) is a disease associated with abnormal placental adhesion and invasion. In recent years, the incidence of PAS has increased significantly, which can cause massive postpartum hemorrhage, hysterectomy,and even maternal mortality. The research team of Peking university third hospital developed the ultrasound rating scale in china at first to conduct preliminary assessment of the PAS risk which can identify the severity of cases. In a basis of ultrasound, plan to explore the MRI for the the investigators diagnosis of PAS according to some specific PAS features, like the the uneven signal intensity , the myometrial discontinuity, and black band on T2 image, and finally established a MRI scoring system of PAS. MRI score system of PAS can reduce the subjective difference of the clinician's visual reading, and assist the clinician to assess the risk of sever PAS further, and conduct perioperative preparation to reduce the risk of maternal morbidity and mortality to achieve a better clinical outcome.