Management of abnormal invasive placenta in a low- and medium-resource setting

Successful multidisciplinary team management of placenta accreta spectrum disorder: A referral center model in a middle-income country

OBJECTIVE

The aim of the study was to evaluate the outcomes of placenta accreta spectrum (PAS) disorder managed by a multidisciplinary care team (MCT) compared with a conventional care team (CCT) in a PAS referral center in Thailand.

METHODS

This retrospective single-center cohort study analyzed PAS management outcomes in the PSU PAS Center between January 2010 and December 2022. The incidence of hemorrhage ≥3500 mL and the composite maternal and neonatal outcomes of PAS were compared before and after the introduction of an MCT in 2016.

RESULTS

Of 227 PAS cases, 219 (96.5%) had pathological confirmation. There were 52 (22.9%) cases of placenta accreta, 119 (52.4%) cases of placenta increta, and 56 (24.7%) cases of placenta percreta. The incidence of estimated blood loss (EBL) ≥3500 mL decreased from 61.8% to 34.3% (P < 0.001) after the establishment of the MCT. The median EBL decreased from 4000 (IQR: 2600,7250) mL to 2250 (1300, 4750) mL (P < 0.001). EBL reduction was statistically significant in the accreta and increta groups (P < 0.001). Red blood cell transfusions decreased from five (3, 9) to two (1, 6) units (P < 0.001) per patient. The length of maternal hospital stays and ICU admissions were statistically shorter when PAS was managed by an MCT (P < 0.001). The length of newborn hospital and ICU stays decreased significantly (P < 0.001).

CONCLUSION

The incidence of massive postpartum hemorrhage and a composite of maternal and neonatal morbidities in pregnant women with PAS disorder improved significantly after the establishment of an MCT to manage PAS in a middle-income country setting.

Separation sign: novel ultrasound sign for ruling out diagnosis of placenta accreta spectrum

OBJECTIVE

To assess the performance of the 'separation sign' as a predictor of normal placental separation in a large cohort of women at risk for placenta accreta spectrum (PAS) and in a high-risk subgroup with placenta previa or anterior low-lying placenta and at least one previous Cesarean delivery.

METHODS

This was a prospective study of women at risk for PAS referred to a specialist clinic at between 22 and 38 weeks' gestation. All women underwent ultrasound assessment for the presence of the separation sign, which detects the difference in elasticity between the myometrium and the placenta, characterized by different rates of rebound after an ultrasound probe is used to apply pressure over the uteroplacental interface. When the sign is positive, the placenta appears to move relative to the myometrium, leading to the appearance or enhancement of the clear zone. The predictive performance of the separation sign for normal spontaneous placental separation at delivery was assessed.

RESULTS

Of the 194 included women, 163 had a positive separation sign, all of whom went on to have normal placental separation at delivery. Of the 24 women with a negative separation sign, three (12.5%) had normal placental separation and 21 (87.5%) were diagnosed with PAS. This yielded a sensitivity of 98.2% (95% CI, 94.8-99.6%) and specificity of 100% (95% CI, 83.9-100%). In the high-risk cohort (n = 35), a positive separation sign remained a reliable predictor of normal placental separation, with a positive predictive value of 100%, sensitivity of 88.9% (95% CI, 65.3-98.6%) and specificity of 100% (95% CI, 80.5-100%).

CONCLUSIONS

The separation sign could be a useful tool in women considered to be at risk for PAS, as it can facilitate the prediction of normal placental separation at delivery. This may prevent overtreatment, the associated iatrogenic morbidity and unnecessary allocation of clinical resources. © 2022 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.

Importance of the gynecologic oncologist in management of cesarean hysterectomy for Placenta Accreta Spectrum (PAS)

OBJECTIVE

Placenta Accreta Spectrum (PAS) is an invasive placental disorder characterized by significant maternal and fetal morbidity. Utilization of multidisciplinary teams has been shown to optimize patient outcomes. Our objective was to assess the impact of cesarean hysterectomy performed by gynecologic oncologists versus Ob/Gyn specialists in maternal morbidity.

METHODS

A retrospective cohort study was performed of singleton, non-anomalous pregnancies complicated by PAS University of Texas Health San Antonio Placenta Accreta program from 2010 to 2021. Our primary outcome was a maternal morbidity composite of any of the following: estimated blood loss >2 L, ICU admission, intraoperative acidosis and post-operative length of stay >4 days. In addition, demographic and pregnancy data were obtained. Univariate and multivariate analyses were performed to identify the individual impact of variables such as general anesthesia, episodes of vaginal bleeding, uterine artery embolization, emergent delivery and placenta percreta pathology.

RESULTS

122 pregnancies complicated by PAS who underwent cesarean hysterectomy were identified from 2010 to 2021. Gynecologic oncologists were the primary surgeons for 62 (50.8%) of these cases. The involvement of gynecologic oncologists increased over the time period from 16% to 80%. Gynecologic oncologists were more like to be involved in cases with an antenatal diagnosis of placenta percreta (11.7 vs 37.1%, p = 0.001) and these cases were characterized by increased composite maternal morbidity (65 vs 83.9%, p = 0.02). These cases were also significantly longer (151 vs 271 min, p < 0.0001), involved greater usage of urinary stents (36.7 vs 66.1%, p = 0.002) and had longer post-operative lengths of stay (3 vs 4 days, p < 0.0001). PAS cesarean hysterectomies by gynecologic oncologists were less likely to be supracervical (25 vs 3.2%, p = 0.0005). Multivariate analysis controlling for placenta percreta, uterine artery embolization, vaginal bleeding and emergent delivery showed no difference in composite maternal morbidity (aOR = 0.95, 95%CI [0.35-2.52]) and lower rates of intraoperative acidosis (aOR = 0.36, 95%CI [0.14-0.93]) or post-operative length of stay >4 days (aOR = 0.37, 95%CI [0.15-0.91]).

CONCLUSIONS

Gynecologic oncologists play a critical role in the surgical management of PAS cesarean hysterectomies. When compared to Ob/Gyn specialists, gynecologic oncologists are more likely to act as primary surgeons in complex cases similar morbidity and greater post-operative outcomes.

Caesarean section or vaginal delivery for low-risk pregnancy? Helping women make an informed choice in low- and middle-income countries

Women's fear and uncertainty about vaginal delivery and lack of empowerment in decision-making generate decision conflict and is one of the main determinants of high caesarean section rates in low- and middle-income countries (LMICs). This study aims to develop a decision analysis tool (DAT) to help pregnant women make an informed choice about the planned mode of delivery and to evaluate its acceptability in Vietnam, Thailand, Argentina, and Burkina Faso. The DAT targets low-risk pregnant women with a healthy, singleton foetus, without any medical or obstetric disorder, no previous caesarean scarring, and eligibility for labour trials. We conducted a systematic review to determine the short- and long-term maternal and offspring risks and benefits of planned caesarean section compared to planned vaginal delivery. We carried out individual interviews and focus group discussions with key informants to capture informational needs for decision-making, and to assess the acceptability of the DAT in participating hospitals. The DAT meets 20 of the 22 Patient Decision Aid Standards for decision support. It includes low- to moderate-certainty evidence-based information on the risks and benefits of both modes of birth, and helps pregnant women clarify their personal values. It has been well accepted by women and health care providers. Adaptations have been made in each country to fit the context and to facilitate its implementation in current practice, including the development of an App. DAT is a simple method to improve communication and facilitate shared decision-making for planned modes of birth. It is expected to build trust and foster more effective, satisfactory dialogue between pregnant women and providers. It can be easily adapted and updated as new evidence emerges. We encourage further studies in LMICs to assess the impact of DAT on quality decision-making for the appropriate use of caesarean section in these settings.

Massive obstetric haemorrhage on post caesarean subtotal hysterectomy due to late detection of occult placenta percreta: A case report

Introduction

Placenta accreta syndrome is a significant cause of maternal mortality and morbidity. Therefore, a multidiscipline approach is essential to overcome this life-threatening disorder for the mother and fetus.

Presentation of case

A 32-year-old women gravida 3 parity 2, 34 weeks gestation come due to recurrent antepartum haemorrhage. She had twice prior caesarean section. Ultrasound assessment suggests total placenta previa and elevating suspicion to placenta accreta. However, intraoperatively its sign is unavailable. Although we have done subtotal hysterectomy, massive bleeding still occurring. Therefore, we present management of unexpected placenta percreta.

Discussion

Management of unexpected placenta percreta involves prenatal diagnosis, haemoglobin optimization, surgical management anticipating haemorrhage, dedicated maternal ICU, blood bank providing massive transfusion and blood component.

Conclusion

Close monitoring is important in catastrophe management of Placenta Accreta Syndrome.

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Placenta accreta spectrum should be considered from risk factor, prenatal diagnosis and intraoperative findings.

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Not only to bladder and colon, but placenta percreta can invade vagina.

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The standard treatment for placenta percreta is total hysterectomy.

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The multi-discipline approach is important in managing placenta accrete syndrome.