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Introduction: Our objective was to compare the performance of the first vaginal examination at 8 vs 4 h after amniotomy following Foley ripening in nulliparous labor induction. Material and Methods: A randomized controlled trial was conducted from June 2021 to January 2022. 210 nulliparas at term for labor induction were randomized: 105 each to first vaginal examination at 8 or 4 h after Foley balloon ripening and amniotomy. Titrated oxytocin infusion was routinely commenced after amniotomy to expedite labor. Primary outcomes were the amniotomy‐to‐delivery interval (non‐inferiority hypothesis) and maternal satisfaction with their allocated labor care (superiority hypothesis) within 24 h after delivery. Analyses performed using t‐test, Mann–Whitney U test, and Chi‐squared test as appropriate. Results: The amniotomy‐to‐delivery interval was mean ± standard deviation 8.7 ± 3.4 vs 8.4 ± 3.7, mean difference 0.4 (97.5% CI: −0.7 to 1.5) hours, p = 0.442 within the pre‐specified 2‐hour non‐inferiority margin, and maternal satisfaction score with allocated labor care was median [interquartile range] 8[7.5–10] vs 8[7.0–10], p = 0.248 for 8 vs 4 h arms, respectively. The amniotomy to first vaginal examination intervals was 5.9 ± 2.3 vs 3.6 ± 1.0 h, p < 0.001, and the number of vaginal examinations was 2[1–2.5] vs 3 [2, 3], p < 0.001 for 8 vs 4 h, respectively. The first vaginal examination was less likely to have been performed as scheduled, more likely to be indicated by the urge to bear down, and non‐reassuring cardiotocography for the 8 h arm (p < 0.001). Spontaneous vaginal delivery was significantly more likely and instrumental vaginal delivery less likely, but cesarean rate was not significantly different for the 8 h arm (p = 0.017). Conclusions: A routine first vaginal examination at 8 h compared to 4 h is non‐inferior for the time to birth but does not increase maternal satisfaction although the number of vaginal examinations is fewer. The increase in spontaneous vaginal delivery and reduction in instrumental vaginal delivery rates warrant further powered primary evaluation. [ABSTRACT FROM AUTHOR]

Background/Objectives: The utility of shear wave elastography (SWE) as an adjunct to ultrasound biometry and Doppler velocimetry for the examination of placental dysfunction and suboptimal fetal growth is unclear. To date, limited data exist correlating the mechanical properties of placentae with fetal growth. This study aimed to investigate the relationship between placental shear wave velocity (SWV) and ultrasound estimated fetal weight (EFW), and to ascertain if placental SWV is a suitable proxy measure of placental function in the surveillance of small-for-gestational-age (SGA) pregnancies. Methods: This prospective, observational cohort study compared the difference in placental SWV between SGA and appropriate-for-gestational-age (AGA) pregnancies. There were 221 women with singleton pregnancies in the study cohort—136 (61.5%) AGA and 85 (38.5%) SGA. Fetal biometry, Doppler velocimetry, the deepest vertical pocket of amniotic fluid, and mean SWV were measured at 2–4-weekly intervals from recruitment to birth. Results: There was no difference in mean placental SWV in SGA pregnancies compared to AGA pregnancies, nor was there any relationship to EFW. Conclusions: Although other studies have shown some correlation between increased placental stiffness and SGA pregnancies, our investigation did not support this. The mechanical properties of placental tissue in SGA pregnancies do not result in placental SWVs that are apparently different from those of AGA controls. As this study did not differentiate between constitutionally or pathologically small fetuses, further studies in growth-restricted cohorts would be of benefit. [ABSTRACT FROM AUTHOR]

A full bladder before Pipelle endometrial sampling reduces the insertion failure rate, duration of sampling, and patient discomfort and increases patient satisfaction. OBJECTIVE: To compare insertion failure rates for Pipelle endometrial sampling with a full bladder compared with the standard process (not taking into account bladder status) without cervical manipulation. METHODS: A single-masked randomized trial was conducted in a single tertiary care center from July 2021 to January 2022. Two hundred fourteen participants aged 18 years or older who were scheduled for outpatient Pipelle endometrial sampling were randomized: 107 each to having a full bladder (by oral water intake) or standard process (without delayed sampling and bladder status not taken into account). Women with known cervical stenosis, gynecologic malignancy, uterine anomalies, leiomyoma distorting the uterine cavity, acute cervicitis, urge bladder dysfunction, intense anxiety, need for anesthesia or analgesic before the procedure, positive pregnancy test, or previous failed office endometrial sampling were excluded. The primary outcome was the insertion failure rate of endometrial sampling at first attempt. Secondary outcomes were pain during procedure, satisfaction score, analgesia use, procedure duration, and need for cervical manipulation. Factoring in a baseline insertion failure rate of 30.0%, relative risk of 0.45, α of 0.05, 80.0% power, and a dropout rate of 10.0%, we needed 107 participants in each arm. RESULTS: The insertion failure rate was significantly lower in the full bladder group compared with standard process: 25 of 107 (23.4%) compared with 45 of 107 (42.1%) (relative risk 0.56, 95% CI, 0.37–0.84; number needed to treat to benefit 6.0, 95% CI, 3.20–15.70). Pain score (median) during the procedure (interquartile range) was 4 (3–6) compared with 5 (3–8) (P =.004); patient satisfaction score was 8 (7–9) compared with 7 (4–8) (P <.001); and mean±SD procedure duration was 3.0±2.4 compared with 4.7±2.9 minutes (P <.001) for the full bladder and standard process arm, respectively. Other secondary outcomes of cervical laceration, analgesia use, and adequacy of endometrial tissue for histopathologic assessment were not significantly different between groups. CONCLUSION: Pipelle endometrial sampling with a full bladder reduces the initial insertion failure rate, procedure-related pain, and duration of sampling and increases patient satisfaction compared with the standard process. CLINICAL TRIAL REGISTRATION: ISRCTN, ISRCTN33938192. [ABSTRACT FROM AUTHOR]

Objective: To assess the utility of placental growth factor (PlGF) levels and the soluble fms‐like tyrosine kinase‐1/placental growth factor (sFlt‐1/PlGF) ratio to predict preterm birth (PTB) for infants with fetal growth restriction (FGR) and those appropriate for gestational age (AGA). Design: Prospective, observational cohort study. Setting: Tertiary maternity hospital in Australia. Population: There were 320 singleton pregnancies: 141 (44.1%) AGA, 83 (25.9%) early FGR (<32+0 weeks) and 109 (30.0%) late FGR (≥32+0 weeks). Methods: Maternal serum PlGF and sFlt‐1/PlGF ratio were measured at 4‐weekly intervals from recruitment to delivery. Low maternal PlGF levels and elevated sFlt‐1/PlGF ratio were defined as <100 ng/L and >5.78 if <28 weeks and >38 if ≥28 weeks respectively. Cox proportional hazards models were used. The analysis period was defined as the time from the first measurement of PlGF and sFlt‐1/PlGF ratio to the time of birth or censoring. Main outcome measures: The primary study outcome was overall PTB. The relative risks (RR) of birth within 1, 2 and 3 weeks and for medically indicated and spontaneous PTB were also ascertained. Results: The early FGR cohort had lower median PlGF levels (54 versus 229 ng/L, p < 0.001) and higher median sFlt‐1 levels (2774 ng/L versus 2096 ng/L, p < 0.001) and sFlt‐1/PlGF ratio higher (35 versus 10, p < 0.001). Both PlGF <100 ng/L and elevated sFlt‐1/PlGF ratio were strongly predictive for PTB as well as PTB within 1, 2 and 3 weeks of diagnosis. For both FGR and AGA groups, PlGF <100 ng/L or raised sFlt‐1/PlGF ratio were strongly associated with increased risk for medically indicated PTB. The highest RR was seen in the FGR cohort when PlGF was <100 ng/L (RR 35.20, 95% CI 11.48–175.46). Conclusions: Low maternal PlGF levels and elevated sFlt‐1/PlGF ratio are potentially useful to predict PTB in both FGR and AGA pregnancies. [ABSTRACT FROM AUTHOR]

Objectives: To evaluate expectant compared to immediate return to hospital upon outpatient Foley catheter expulsion predicated on maternal satisfaction and amniotomy‐titrated oxytocin infusion to delivery interval. Methods: This randomized trial was conducted in a tertiary university hospital in Malaysia from September 2020 to February 2022. A total of 330 nulliparous women at term with unripe cervices (Bishop score ≤5), singleton viable fetus in cephalic presentation, reassuring preinduction fetal heart rate tracing and intact membranes who underwent planned outpatient Foley catheter induction of labor (IOL) were included. Women were randomized to expectant or immediate return to hospital if the Foley was spontaneously expelled at home before their scheduled hospital admission the following day. Primary outcomes were amniotomy‐titrated oxytocin infusion to delivery interval and maternal satisfaction on the induction process (assessed by 0–10 visual numerical rating scale [VNRS]). Results: Amniotomy‐titrated oxytocin infusion to delivery interval was 8.7 ± 4.1 versus 8.9 ± 3.9 h, P = 0.605 (mean difference − 0.228 95% CI: −1.1 to +0.6 h) and maternal satisfaction VNRS score was median (interquartile range) 8 (7–9) versus 8 (7–9), P = 0.782. Early return to hospital rates were 37/165 (22.4%) versus 72/165 (43.6%), RR 0.51 (95% CI: 0.37–0.72), P ≤ 0.001, Cesarean delivery rates were 80/165 (48.5%) versus 80/165 (48.5%), RR 1.00 (95% CI: 0.80–1.25), P = 1.00 and duration of hospital stay was 54.4 ± 22.9 versus 56.7 ± 22.8 h, P = 0.364 for the expectant versus immediate return groups respectively. Conclusion: In outpatient Foley catheter IOL, expectant compared to immediate return to hospital following Foley dislodgement results in similarly high maternal satisfaction. The amniotomy‐titrated oxytocin to delivery duration is non‐inferior with expectant management. Synopsis: Expectant or immediate return to hospital after Foley expulsion in nulliparas outpatient labor induction shows good acceptability and comparable outcomes. [ABSTRACT FROM AUTHOR]

Cesarean delivery rates were 22/32 (69%) versus19/31 (61%) (relative risk 1.12, 95% confidence interval 0.78-1.62; I P i = 0.603) and insertion-to-catheter removal intervals, median (interquartile range), were 15 (6.3-21.0) versus19 (11.0-24.0) hours ( I P i = 0.065) for membrane sweeping with Foley catheter versus Foley catheter arm, respectively. In conclusion, adjunctive membrane sweeping just before Foley catheter labor induction in term women with one previous cesarean and unfavorable cervixes did not shorten induction-to-delivery interval or increase maternal satisfaction compared with Foley catheter alone. Keywords: cesarean section; Foley catheter; induction of labor; induction-to-delivery interval; maternal satisfaction; membrane sweeping; trial of labor after cesarean; vaginal birth after cesarean EN cesarean section Foley catheter induction of labor induction-to-delivery interval maternal satisfaction membrane sweeping trial of labor after cesarean vaginal birth after cesarean 65 73 9 12/16/22 20230101 NES 230101 Abstract Objective To evaluate adjunctive membrane sweeping in Foley catheter labor induction for induction-to-delivery interval and maternal satisfaction in women with one previous cesarean delivery. [Extracted from the article]