Opportunities for, and barriers to, uterus-preserving surgical techniques for placenta accreta spectrum.

INTRODUCTION: Placenta accreta spectrum (PAS) can lead to major peripartum morbidity. Appropriate management approaches depend on the clinical severity, each individual's preference, and the treating team's expertise. Peripartum hysterectomy is the most frequently used treatment option. However, it can impact psychological well-being and fertility. We investigated whether conservative treatment with focal resection or leaving the placenta in situ is associated with comparable or lower maternal morbidity than hysterectomy in centers of excellence within the International Society for placenta accreta spectrum (IS-PAS). Furthermore, a survey was conducted to explore potential barriers to conservative management in antenatal counseling and intraoperative decision-making. MATERIAL AND METHODS: Confirmed PAS cases in the prospective IS-PAS database from 22 registered centers between January 2020 and June 2022 were included in the analysis. A separate online survey with 21 questions was answered by the IS-PAS center experts about indications, diagnostic criteria, patient counseling, surgical practice, changes from the preoperative treatment plan, and why conservative management may not be offered. RESULTS: A total of 234 cases were included in the analysis: 186 women received hysterectomy and 38 women were treated by focal resection, and 10 by leaving the placenta in situ. Blood loss was lower in the focal resection group and in the placenta in situ group compared to the hysterectomy group (p = 0.04). 46.4% of the women initially planned for focal resection, and 35.7% of those initially planned for leaving the placenta in situ were ultimately treated by hysterectomy. Our survey showed that the IS-PAS centers preferred hysterectomy according to a woman's wishes (64%) and when they expected less blood loss and morbidity (41%). Eighteen percent of centers did not offer focal resection at all due to a lack of experience with this technique. Reasons for not offering to leave the placenta in situ were avoidance of unexpected reoperation (36%), puerperal infection (32%), or skepticism about the method (23%). CONCLUSIONS: Uterus-preserving treatment strategies such as focal resection appear to be safe alternatives to peripartum hysterectomy. However, less than half of the IS-PAS centers perform them. Acceptance of conservative treatments could be increased by standardized criteria for their implementation and by systematic training for PAS experts.

The association between gynecological complaints and the uterine sonographic features in women with a history of cesarean section.

PURPOSE: The aim of this study is to investigate the association between post-cesarean sonographic uterine measures, dysmenorrhea, and bleeding disorders. METHODS: This is a cross-sectional study where 500 women with a history of only one cesarean section (CS) were recruited. A transvaginal transducer, GE RIC6-12-D was used for the acquisition of volumetric datasets 18 ± 7 months postpartum. Uterine length (UL), cervical length (CL), niche length (L), niche depth (D), niche width (W), fibrosis length (FL), fibrosis depth (FD), residual myometrial thickness (RMT), endometrial thickness (EM), scar to internal os distance (SO), anterior myometrial thickness superior (sAMT) and inferior (iAMT) to the scar, and the posterior myometrial thickness opposite the scar (PMT), superior (sPMT), and inferior to it (iPMT) were measured. Logistic regression with odds ratios (OR), 95% confidence intervals (CI) and ROC curves were utilized. RESULTS: The proportion of patients with incident post-cesarean bleeding disorders and dysmenorrhoea was 36% (CI 32%, 40%) and 17% (CI 14%, 21%) respectively. Univariate logistic regression showed that only UL was associated with bleeding disorders [OR 1.04 (CI 1.01,10.7) p value 0.005], whereas dysmenorrhea was associated with RMT [OR 0.82 (CI 0.71,0.95) p value 0.008], SO [OR 0.91 (CI 0.86,0.98) p value 0.01], and RMT ratio [OR 0.98 (CI 0.97,0.99) p value 0.03]. Multivariate logistic regression for dysmenorrhoea including SO and RMT remains statistically significant with p values <0.05 and area under the curve of 0.66. CONCLUSION: There is an association between sonographic appearance of CS scars and dysmenorrhoea. Nevertheless, the association is weak and other biological post-cesarean characteristics should be explored as potential causes.

The influence of epidural analgesic techniques on obstetrical outcomes.

PURPOSE: The aim of this study is to compare and evaluate the obstetrical differences between three techniques, including the programmed intermittent epidural bolus (PIEB), the patient-controlled epidural analgesia (PCEA), and the continuous epidural analgesia (CEA). METHODS: This is a retrospective cohort study that investigates the obstetrical outcomes of 2240 patients who received EA during labor in a tertiary maternal unit over the course of 9 years (2011-2018). The only inclusion criterion was the use of epidural analgesia during childbirth and the only exclusion criteria were multiplets' gestation. Multivariate logistic regression, Kruskal-Wallis test, and the log-rank test were utilized to compare the differences between the three EA techniques in terms of cesarean section rate, the incidence of perineal tears, the use of Oxytocin, the duration of labor, and the incidence of paresthesia. RESULTS: Out of the 2240 included deliveries; 1084 utilized PIEB, 1086 PCEA, and 70 CEA techniques. The incidence of Cesarean section was the highest in the CEA group (45.7%) compared to PIEB (24.8%) and PCEA (24.4%) P < 0.001. A significantly shorter duration of labor (vaginal delivery) was observed in the PCEA group (n: 821, 336.7 min) compared to the PIEB group (n: 814, 368.8 min) P < 0.001. There were no statistically significant differences in the incidence of perineal tears, the need of uterotonics, and the incidence of paresthesia. CONCLUSION: The results of this study indicate that the PIEB and PCEA techniques are superior to the CEA technique when it comes to analgesia during childbirth. In this study, the PCEA technique seems to be the best-suited technique for childbirth, since it had a significantly shorter duration of labor than the PIEB technique.

The impact of selective episiotomy on maternal short-term morbidity: a retrospective study.

BACKGROUND: The aim is to investigate the risk of short-term maternal morbidity caused by the selective clinical use of episiotomy (rate < 0.02), and to compare the risk of severe perineal tears with the statewide risk. METHODS: In this retrospective cohort study, we investigated the effect of selective episiotomy on the risk of severe perineal tears and blood loss in singleton term deliveries, using propensity scores with inverse probability weighting. RESULTS: This study included 10992 women who delivered vaginally between 2008-2018. Episiotomy was performed in 171 patients (1.55%), three of whom (1.75%) experienced severe perineal tears compared to 156 (1.44%) in the control cohort. The adjusted odds ratio of severe perineal tears was 2.06 (95% confidence interval [CI]: 0.51, 8.19 with 0.3 p value). Multivariate linear regression showed that episiotomy increased blood loss by 96.3 ml (95% CI: 6.4, 186.2 with 0.03 p value). Episiotomy was performed in 23% (95% CI: 0.228, 0.23) of vaginal deliveries in the state of Hessen, with a risk of severe perineal tears of 0.0143 (95% CI: 0.0139, 0.0147) compared to 0.0145 (95% CI: 0.0123, 0.0168) in our entire cohort. CONCLUSIONS: Selective use of episiotomy does not increase the risk of higher-grade perineal tears. However, it may be associated with maternal morbidity in terms of increased blood loss.

An episiotomy is a cut between the vagina and the anus that may be performed by an obstetrician during childbirth and can result in increased blood loss or severe birth tears. In this study, we investigated the risks of both bleeding and severe tears caused by a highly selective local practice of episiotomies below 2% and compared the results with statewide data. The study included 10992 women who delivered between 2008­2018, 171 of whom underwent episiotomies according to the hospital's protocols. Having an episiotomy did not increase the likelihood of severe birthing tears but was associated with an increase in estimated blood loss. Therefore, although highly selective use of episiotomy is unlikely to cause more severe tears, it has the potential to worsen the mother's health by increasing blood loss.

Ectopic pregnancy: a single-center experience over ten years.

PURPOSE: The aim of this study was to investigate characteristics associated with ectopic pregnancy (EP) that could be utilized for predicting morbidity or mortality. METHODS: This was a retrospective analysis of pregnancy-related records from a tertiary center over a period of ten years. Data on age, gravidity, parity, EP risk, amenorrhea duration, abdominal pain presence and location, ß-human chorionic gonadotropin (ß-HCG) level, ultrasound findings, therapeutic intervention, exact EP implantation site and length of hospital stay (LOS) were obtained from the database. The LOS was used as a proxy for morbidity and was tested for an association with all variables. All statistical analyses were conducted with Stata® (ver. 16.1, Texas, USA). RESULTS: The incidence of EP in a cohort of 30,247 pregnancies over a ten-year period was 1.05%. Patients presented with lower abdominal pain in 87.9% of cases, and the likelihood of experiencing pain was tenfold higher if fluid was detectable in the pouch of Douglas. Only 5.1% of patients had a detectable embryonic heartbeat, and 18.15% had one or more risk factors for EP. While most EPs were tubal, 2% were ovarian. The LOS was 1.9 days, and laparoscopic intervention was the main management procedure. The cohort included one genetically proven dizygotic heterotopic pregnancy (incidence, 3.3 × 10- 5) that was diagnosed in the 7th gestational week. The only association found was between the ß-HCG level and LOS, with a linear regression ß coefficient of 0.01 and a P-value of 0.04. CONCLUSION: EP is a relatively common condition affecting approximately 1% of all pregnancies. ß-HCG correlates with EP-related morbidity, but the overall morbidity rate of EP is low regardless of the implantation site. Laparoscopic surgery is an effective therapeutic procedure that is safe for managing EP, even in cases of heterotopic pregnancy.

Performance of antenatal imaging to predict placenta accreta spectrum degree of severity.

INTRODUCTION: In cases of placenta accreta spectrum, a precise antenatal diagnosis of the suspected degree of invasion is essential for the planning of individual management strategies at delivery. The aim of this work was to evaluate the respective performances of ultrasonography and magnetic resonance imaging for the antenatal assessment of the severity of placenta accreta spectrum disorders included in the database. The secondary objective was to identify descriptors related to the severity of placenta accreta spectrum disorders. MATERIAL AND METHODS: All the cases included in the database for which antenatal imaging data were available were analyzed. The rates of occurrence of each ultrasound and magnetic resonance imaging descriptor were reported and compared between the Group "Accreta-Increta" (FIGO grades 1 & 2) and the Group "Percreta" (FIGO grade 3). RESULTS: Antenatal imaging data were available for 347 women (347/442, 78.5%), of which 105 were included in the Group "Accreta - Increta" (105/347, 30.2%) and 213 (213/347, 61.4%) in the Group "Percreta". Magnetic resonance imaging was performed in addition to ultrasound in 135 women (135/347, 38.9%). After adjustment for all ultrasound descriptors in multivariate analysis, only the presence of a bladder wall interruption was associated with a significant higher risk of percreta (Odds ratio 3.23, Confidence interval 1.33-7.79). No magnetic resonance imaging sign was significantly correlated with the degree of severity. CONCLUSIONS: The performance of ultrasound and magnetic resonance imaging to discriminate mild from severe placenta accreta spectrum disorders is very poor. To date, the benefit of additional magnetic resonance imaging has not been demonstrated.

Does the appearance of the cutaneous scar after cesarean section reflect the residual myometrial thickness?

PURPOSE: The aim of this study is to utilize the Manchester scar scale (MSS) and ultrasound in investigating the association between uterine wall defects and cutaneous scar characteristics after cesarean section (CS). METHODS: This is a prospective cohort study. The degree of myometrial loss was quantified by calculating a residual myometrial thickness (RMT) ratio as a percentage of RMT to the pre-cesarean anterior uterine wall thickness. Cutaneous scar assessment was performed according to the MSS. Spearman's correlation and the Kruskal-Wallis test with a cut-off value of p < 0.05 were used for statistical analysis. RESULTS: Two hundred forty seven women, of which 2.4% had an Asian, 3.6% an Afro-American, 82% a Caucasian and 12% a Mediterranean background, were recruited. The RMT ratio ranged between 11.9 and 100% with a median of 55.8% and an average of 56%. MSS scores ranged from 4 to 13 with a median of 5 and an average of 6. Spearman's correlation between MSS and RMT ratio show a rho of - 0.01 with a p value of 0.8. The correlation between MSS and RMT ratio within the four ethnical groups showed a p value between 0.3 and 0.8 and a rho between 0.8 and - 0.8. The Kruskal-Wallis test showed an eta2 of 0.13 and a p value of 0.0002 for the effect of ethnicity on MSS and an eta2 of 0.009 and a p value of 0.68 for the effect of ethnicity on the RMT ratio. CONCLUSION: CS laparotomy scars heal differently between ethnical groups, but generally with satisfying results. Ethnicity does not affect myometrial healing and scar appearance does not reflect myometrial healing after CS. Thus, separate uterine sonographic assessment is recommended.

Anatomy of the sonographic post-cesarean uterus.

PURPOSE: We aim to describe the sonographic uterine anatomy after a cesarean section (CS), test the reproducibility of predefined measurements from the BSUM study, and report the distribution of these measurements. METHODS: This is a descriptive observational study where 200 women with a history of only one CS were recruited 12-24 months postoperatively. A 5-13 MHz micro-convex transvaginal transducer was used for the acquisition of volumetric datasets for evaluating the CS scars. We defined 15 distinct measurements including the residual myometrial thickness (RMT). RMT ratio was calculated as a percentage of RMT to the assumed pre-cesarean anterior uterine wall thickness. A P value below 0.05 is utilized for significant statistical analysis. RESULTS: Patients were included on average 18.5 months post-cesarean. The uterus was anteflexed in 82.5% and retroflexed in 17.5%. Myometrial defects at the site of CS manifest in two forms, either as a niche or as fibrosis. Patients are classified into four groups: those with isolated niches (45%), combined niches and fibrosis (38.5%), isolated fibrosis (11%), and lacking both (5%). The median RMT ratio for these groups was 63.09, 40.93, 59.84, and 100% with a standard deviation of 16.73, 12.95, 16.59, and 0, respectively. The interclass correlation coefficient (ICC) remained above 0.9 for all distinct measurements among these groups except for those of RMT, where ICC varied between 0.47 and 0.96. The RMT ratio shows a constant ICC at 0.94 regardless of the group. CONCLUSION: The post-cesarean uterus is often anteflexed, and a myometrial loss of about 50% is normally expected. The pattern of this loss is in the form of a predominantly sharp-edged and echogenic niche, fibrosis, or a combination of both. The proposed RMT ratio takes these changes into consideration and results in a reproducible quantification. We hypothesize that different adverse outcomes could be attributed to the different scar patterns.

[A Newborn Suffering from Arhinia: Neonatologic Challenges During Primary Care of the Newborn With Bosma Arhinia Microphthalmia Syndrome (BAMS)]. / Neugeborenes mit Nasenagenesie: Neonatologische Herausforderungen bei der Versorgung eines Neugeborenen mit Bosma-Arhinie-Mikrophthalmie-Syndrom (BAMS).

The rare clinical picture of nasal agenesis is to be presented on the basis of a female newborn. Intrauterine growth restriction with polyhydramnios and midface hypoplasia were noted during pregnancy. Primary cesarean section at 38 + 4 weeks' gestation was done. Airway management was achieved by splinting through a Mayo tube which was subsequently replaced by a pharyngeal endotracheal tube without signs of respiratory failure. In addition to a complete nasal agenesis, hypertelorism, a Gothic palate, bilateral microphthalmus, and iris coloboma were found. Ultrasound scans of cerebral structures were normal. An orogastric tube was placed, and drinking training and a special pacifier improved coordination and drinking performance. We suspected a case of Bosma arhinia microphthalmia syndrome (BAMS). The structural maintenance of chromosomes flexible hinge domain (SMCHD) containing 1 gene plays a key role in the embryogenesis of the human nose and is known for mutations in BAMS. A heterozygous de novo mutation in the SMCHD1 gene (c.1043A > G; pHis348Arg) was confirmed by molecular genetic analysis. Initial stabilization after birth is often a challenge in patients with nasal agenesis. They are often intubated immediately postpartum and electively tracheotomized. In the absence of respiratory problems and appropriate growth, however, there is no urgent indication for early plastic surgical treatment, given the inherent risks of sepsis and growth disorders in the midface.

The B-mode sonographic evaluation of the post-caesarean uterine wall and its methodology: A study protocol.

AIM: The aim of this study is to utilize the niche measurement guidelines outlined by Jordans et al. in order to establish normal values and accurate description of caesarean section scars in a normal population. After defining the normal distribution, abnormal pregestational scar characteristics will be identified for predicting adverse pregnancy outcomes. METHODS: This is a prospective observational multicenter clinical study where women with a history of only one caesarean section and yet open family planning are enrolled. The uterine length, cervical length, niche length, niche depth, niche width, residual myometrial thickness, endometrial thickness, scar to internal os distance, anterior myometrial thickness superior and inferior to the scar and the posterior myometrial thickness opposite the scar, superior and inferior to it are measured in a pregestational uterus. The lower uterine segment is measured over a length of 3 cm during subsequent pregnancy and followed up until delivery. RESULTS: Data from 500 patients will yield normal distribution curves for all predefined measurements. Establishing a correlation between deviations from the normal measures and adverse events would be instrumental for counseling women regarding subsequent pregnancy and mode of delivery. CONCLUSION: This study will demonstrate the changes of the post-caesarean scar from a non-pregnant uterus until delivery and can confirm the importance of the scar characteristics in predicting pregnancy outcome.

Hematological changes in severe early onset growth-restricted fetuses with absent and reversed end-diastolic flow in the umbilical artery.

BACKGROUND: Erythropoietin seems to play an important role in the regulation of fetal hypoxemia. The present prospective study was designed to determine if changes in erythropoietin levels can be found in fetuses with severe early-onset growth restriction and hemodynamic compromise. METHODS AND RESULTS: Erythropoietin, hemoglobin, hematocrit, platelet counts, normoblasts, lacate, arterial and venous blood gasses in the umbilical cord were determined in 42 fetuses with fetal growth restriction (IUGR) with absent (zero-flow) and 26 IUGR fetuses with retrograde end-diastolic flow (reverse-flow) in the umbilical artery. Color Doppler measurements were performed on the middle cerebral artery (PI) and ductus venosus [(S-a)/D and (S-a)/Vmean]. Erythropoietin concentrations were significantly lower in the zero-flow group (median: 128.0 mU/mL; range: 60.3-213 mU/mL) compared with the reverse-flow group (median: 202.5 mU/mL; range: 166-1182 mU/mL). Significant differences in median lactate concentrations were observed between the zero-flow group: 3.28 mmol/L (range; 2.3-4.7 mmol/L), and reverse-flow group: 5.6 mmol/L (range: 3.8-7.5 mmol/L). Fetuses with reverse-flow had significantly lower median platelet counts than fetuses with zero-flow (74 vs. 155/µL) and significantly lower normoblast counts (63 vs. 342/100 WBC). CONCLUSIONS: Fetuses with severe IUGR due to chronic placental insufficiency and absent or reversed flow in the umbilical artery show increased erythropoietin levels.

Fetal pulmonary venous blood flow velocities in a normal population and new calculated reference values.

OBJECTIVE: The aim of this study is to establish new Doppler reference values in a population with normal pulmonary veins during different phases of the fetal cardiac cycle for maximum blood flow velocities during ventricular systole (S), early ventricular diastole (D), atrial contraction (a), intensity-weighted mean velocity (Vmean) and the indices derived from these parameters [(S - a)/D] and [(S - a)/Vmean]. METHODS: The pulsed-wave color advanced dynamic flow Doppler technique was used in a prospective cross-sectional study of 365 low-risk pregnancies between 18 and 41 completed gestational weeks. Reference ranges were calculated for the individual measuring parameters based on a growth function from a four-parameter class of monotonic continuous functions according to the smallest square principle. RESULTS: During the observation period of 18 to 41 gestational weeks, a continuous increase was evident in maximum flow velocities for ventricular systole (S), early ventricular diastole (D), atrial contraction (a) and intensity-weighted mean velocity (Vmean) of 14.7 to 431.1, 12.5 to 426.2, 5.4 to 411.9 and 8.7 to 421.6 cm/s, respectively. Venous indices, however, showed a decrease with increasing gestational age: (S - a)/D from 0.9 to 0.7 and (S - a)/Vmean from 1 to 0.9. CONCLUSION: The newly established normal values for the fetal pulmonary vein can be used in standardized Doppler sonography measurement to assess the left atrial pressure in the fetal heart. © 2016 John Wiley & Sons, Ltd.

Using the angiogenic factors sFlt-1 and PlGF with Doppler ultrasound of the uterine artery for confirming preeclampsia.

PURPOSE: The aim of this study is to assess the value of the angiogenic factors for diagnosing preeclampsia and predicting the severity of manifestation. A secondary aim is assessing the combination of the uterine artery Doppler with the angiogenic factors for improving the diagnostic power. METHODS: This is a prospective single center study in a tertiary referral hospital. This study includes 728 individual patients. Inclusion criteria were singleton pregnancies, a referral to the hospital with suspicion of preeclampsia and any one or combination of the following symptoms: headache, upper abdominal pain, edema, and hypertension. Patients with complications that would affect the course of the pregnancy, such as placenta praevia, premature preterm rupture of membranes, breech presentation, and fetal chromosomal or structural anomalies, were excluded from the study. Blood samples collection and uterine artery Doppler ultrasound were performed at time of recruitment. The differences in sFlt-1, PlGF, and their quotient among normal collective and patients with preeclampsia were analyzed. Doppler ultrasound was performed by one of four highly qualified sonographers. Wilcoxon-Mann-Whitney U test, Spearman's rank correlation, receiver operating characteristic curves, Chi-square test, and logistic regression were used in the analysis. RESULTS: A total of 1003 individual samples for the angiogenic factors were included in the analysis. 584 out of the recruited 728 patients had follow-up data with delivery information at the study hospital. Patients with preeclampsia show a significant increase in sFlt-1, which directly correlate with the increased severity of manifestation (Spearman's ρ 0.49). The sFlt-1 cut-off value of 5424 pg/ml confirms preeclampsia with 83.7 % sensitivity, 68.1 % specificity, and 24 % misclassification rate. Preeclampsia patients also show a significant decrease in PlGF, which negatively correlates with the increased severity of manifestation (Spearman's ρ -0.39). A PlGF cut-off value of 118 pg/ml confirms preeclampsia with 47.6 % sensitivity, 71.4 % specificity, and 27 % misclassification rate. Logistic regression shows that a combination of the quotient from sFlt-1/PlGF with notching and uterine artery PI provides a valid model for diagnosing preeclampsia with a diagnostic power of 74.4 %. CONCLUSIONS: The study confirms the use of the sFlt-1 and PlGF for diagnosing preeclampsia. It also shows their significance in differentiating between different categories of preeclampsia according to severity. This study shows that the use of angiogenic factors in combination with ultrasound findings provides valid models for confirming preeclampsia.

Prenatal diagnosis of multicystic dysplastic kidney disease in the second trimester screening.

OBJECTIVE: Multicystic dysplastic kidney (MCDK) is the most common antenatally diagnosed cystic renal pathology. It refers to the presence of multiple kidney cysts surrounded by dysplastic parenchymal tissue. The typical MCDK ultrasound finding shows multiple nonconnecting thin-walled cysts within an irregularly outlined kidney. We want to present our own cases as an addition to the relatively scarce literature about MCDK. METHOD: We retrospectively review 54 cases (21 bilateral and 33 unilateral) with antenatally diagnosed MCDK between the years 1998 and 2012. We compare our data with the published literature and discuss different parameters. RESULTS: Our findings show a male predominance of 1.8 : 1 and a left side/right side ratio of 0.73 : 1. Most of the cases were isolated findings, but 20.3% were associated with anomalies. One case was a Goldenhar syndrome. Of the bilateral MCDK cases, 14.3% had chromosomal defects. The mean gestational age at time of diagnosis was 20-21 weeks. Renal length was above the 90th normal percentile in 96.2% of the cases. CONCLUSION: Isolated unilateral MCDK has good prognosis. Bad prognosis is linked to association with other anomalies as well as to bilateral MCDK.

The effect of the onset of labor on the characteristics of the cesarean scar.

OBJECTIVE: To assess the effect of cesarean section (CS) timing, elective versus unplanned, on the residual myometrial thickness (RMT) and CS scars. METHODS: This is a prospective single-blinded observational cohort study with 186 observations. Patients indicated to undergo first singleton CS were preoperatively recruited. Exclusion criteria were history of repeated CS, vertical hysterotomy, diabetes, and additional uterine surgeries. Sonographic examination was performed for assessing the RMT ratio, the presence of a niche, fibrosis, and the distance from the scar to the internal os (SO) 1 year after CS. Power analysis was performed with 0.05 α, 0.1 ß, and all statistical analyses were conducted with Stata® . RESULTS: Wilcoxon rank-sum test for the association between CS timing, RMT ratio and SO showed Z values of -0.59 and -4.94 (P = 0.553 and P < 0.001), respectively. There was no association between CS timing and niches and fibrosis (P > 0.99 and P = 0.268, respectively). Linear regression between SO and the extent of cervical dilatation showed a -0.45 ß (95% confidence interval -0.68 to -0.21) and a 10.22-mm intercept (P < 0.001). CONCLUSION: RMT is independent of the timing of CS, but the SO distance shows a negative linear relationship with the cervical dilatation.

Combined Assessment of the Obstetrical Conjugate and Fetal Birth Weight Predicts Birth Mode Outcome in Vaginally Intended Breech Deliveries of Primiparous Women-A Frabat Study.

(1) Background: Guidelines on vaginal breech delivery require birth weight restrictions and neglect the impact of pelvic measurements despite contradicting evidence. There is a great need for more evidence on delivery outcome predicting factors for patients counselling. (2) Methods: We performed a prospective cohort study on 748 primiparous women intending vaginal breech birth and analyzed combined influence of fetal birth weight (BW) and the obstetric conjugate (conjugate vera obstetrica, CVO) on delivery outcome. (3) Results: We generated a BW/CVO ratio and devided our study cohort at median (257.8 g/cm) into a low ratio group (LR, with low birth weight and wide obstetric conjugate) and a high ratio group (HR, high birth weight and narrow obstetric conjugate). Cesarean section (CS) rate was significantly higher in HR (50.3%) as compared to LR (28.3%, p < 0.0001). Fetal morbidity was not different. In vaginally completed deliveries duration of birth was significantly longer in vHR (557 min) as in vLR (414 min, p < 0.001). Manual assistance to deliver the arms ('Louwen maneuver') positively correlated with birth weight (r2 = 0.215; p = 0.005) and the BW/CVO ratio (r2 = 0.0147; p = 0.02). (4) Conclusions: A high fetal birth weight combined with a tiny CVO predicts higher cesarean section probability, longer birth duration and the necessity to perform arm delivery assistance. Birth weight and pelvic measurements should be topics of great importance in patients counselling.

The impact of funneling shape on the secondary prevention of spontaneous preterm birth in patients treated with either an Arabin pessary, McDonald cerclage or early total cervical occlusion (ETCO).

OBJECTIVE: Cervical funneling is associated with spontaneous preterm birth (sPTB). The aim of this analysis was to assess the relationship between funneling shape and the response to the McDonald cerclage, the Arabin pessary and the early total cervical occlusion (ETCO). METHODS: We retrospectively analyzed data of 312 randomly selected singleton pregnancies with cervical shortening <25 mm or normal cervical length and evaluated them according to the progression of funneling: control group (n = 46), cervical shortening without funneling (n = 107), V-shaped funneling (n = 68), U-shaped funneling (n = 47), and prolapse of the amniotic sac (n = 44). We evaluated sPTB rates <34, <28, <32, and <37 weeks as well as prolongation of gestation and birthweight. RESULTS: Regarding the rate of sPTB <34 weeks there was no statistical significance in either of the comparisons between control group and each of the four risk groups. Regarding prolongation of gestation we demonstrated a statistical significance for all risk groups compared to the control group (all p < .05) with the lowest prolongation rate noted in the group with amnion prolapse and the highest in the group with isolated cervical shortening without funneling. Similarly, progression of funnel shape resulted in an absolute decrease of birthweight for all risk groups compared to the control group, albeit not significant for the group with U-shaped funneling (p = .1058). CONCLUSION: Independent of the treatment, there was a significant impact of funneling shape on pregnancy duration and birthweight.

Assessing lateral uterine wall defects and residual myometrial thickness after cesarean section.

OBJECTIVE: Lateral wall ruptures in women with a history of cesarean section are less common but more complicated than anterior wall ruptures. Residual myometrial thickness (RMT) is believed to be valuable for assessing the probability of ruptures. This study aimed to assess the utility of OmniView (a sonographic reslicing technique) in evaluating the lateral uterine wall after cesarean section and evaluate the relationship between lateral and anterior wall RMT using OmniView and sagittal two-dimensional ultrasound. STUDY DESIGN: This cross-sectional study examined changes in both the anterior and lateral uterine wall in women with a history of cesarean section in the past 12-18 months. OmniView with volume contrast imaging with a 2-mm slice thickness was used to generate coronal planes, and the OmniView RMT (OV-RMT) was calculated as a percentage. Blinded to the OV-RMT results, sonographic multiplanar views were used to acquire the optimum sagittal plane for evaluating the RMT, and the sagittal RMT (S-RMT) was calculated as a percentage. The reproducibility of OV-RMT and S-RMT between two observers was tested using interclass correlation (ICC). The relationship between two variables was tested using Spearman's rank correlation. RESULTS: In 208 recruited patients, the prevalence of lateral uterine wall defects was 79 %. The interobserver and intraobserver reproducibility of S-RMT and OV-RMT had ICC coefficients over 0.9 with a p-value <0.001. S-RMT and OV-RMT did not follow a normal distribution, and the medians were significantly different (55.5 and 85.7, respectively). Spearman's rank correlation between OV-RMT and S-RMT had a rho (ρ) value of 0.24 (p < 0.05). Passing-Bablok regression had an intercept of 47.95 and a slope of 0.65. CONCLUSION: OmniView can be used to assess lateral uterine wall defects, and OV-RMT is a reproducible and reliable method for quantifying this assessment. The RMT on the coronal plane was independently more intact than that on the sagittal plane, which might account for the lower incidence of lateral ruptures. Further studies could reveal a critical OV-RMT value that is safe for a trial of labor.

The impact of a short cervix and funneling on the outcome in singleton pregnancies treated with an Arabin-pessary or a McDonald cerclage.

OBJECTIVE: The presence of sonographic funneling is a co-predictor of spontaneous preterm birth (sPTB). The aim of this study was to assess the outcome in patients with a short cervix and funneling after a McDonald cerclage or an Arabin pessary. METHODS: We retrospectively analyzed data of 238 singleton pregnancies with cervical shortening <25 mm subclassified by either isolated cervical shortening (n = 105) or cervical shortening and additional funneling (n = 133). In the group of isolated cervical shortening, a total of 93 patients had received a cervical pessary and 12 had McDonald cerclage. In the group of patients with additional funneling, 98 had received a cervical pessary and 35 had a cerclage. We evaluated PTB rates <28, <32, <34, and <37 weeks as well as prolongation of gestation, birth weight, and admission to NICU. RESULTS: In the pessary groups (n = 191), funneling resulted in a significantly higher rate of PTB before 34 weeks as compared to patients with isolated cervical shortening (26.5 versus 8.6%, p=.0066). Similarly, in the cerclage groups (n = 47), funneling resulted in an absolute increase of PTB, albeit not significant (37.1 versus 0%, p=.1435) due to the smaller number. There were no significant differences in terms of prevention of PTB before 34 weeks in patients treated with pessary or cerclage, neither in the group of patients with isolated shortening nor in the group of patients with additional funneling (p=.9771 and p=.3916, respectively). However, in patients with funneling, we demonstrated a significantly lower neonatal admission rate in the pessary arm (n = 27, 27.6%) as compared to the cerclage arm (n = 31, 88.6%) (p = .0002). Similarly, the NICU admission time was shorter in both pessary groups -with and without funneling - as compared to patients treated with cerclage (p = .0000). CONCLUSION: Pessary placement and cerclage should optimally be considered before the presence of funneling. Furthermore, there were lower rates of neonatal admission during pregnancy and a shorter admission time of babies after birth when mothers received a cervical pessary as compared to the group with cervical cerclage.