The Impact on Birth Outcomes of Sonographic Fetal Weight Estimation in Neonatal Macrosomia.

OBJECTIVE: Our objective was to examine the association between sonographic estimated fetal weight (EFW) and obstetrical and neonatal outcomes in women with neonatal macrosomia. STUDY DESIGN: This study, conducted at a tertiary university-affiliated hospital from 2017 to 2021, compared obstetrical and neonatal outcomes between two groups of women who delivered macrosomic newborns (actual birthweight ≥ 4,000 g): (1) those with EFW ≥ 3,800 g (suspected impending macrosomia) and (2) those with EFW < 3,800 g (unsuspected impending macrosomia). RESULTS: During the study period, 854 women with neonatal macrosomia attempted vaginal delivery. Only 9.2% had a sonographic EFW ≥ 4,000 g. Among women with EFW ≥ 3,800 g (n = 317) compared with EFW < 3,800 g (n = 537), the cesarean delivery (CD) rate was higher (17.0 vs. 10.5%, p = 0.004) and the operative delivery rate was lower (3.2 vs. 0.6%, p = 0.015). Among primiparous women, the CD rate was higher among those with EFW ≥ 3,800 versus <3,800 g (37.3 vs. 23.2%, p = 0.033). EFW ≥3,800 g was associated with CD, regardless of predelivery body mass index, parity, diabetes mellitus, maximal fetal weight at previous deliveries, actual birthweight, and labor induction (p = 0.014). EFW ≥ 3,800 g and diabetes mellitus were independent predictors of CD. Among women with EFW ≥3,800 g and diabetes mellitus, the risk of CD was double that of those without diabetes and with EFW ≥ 3,800 g (31.4% vs. 15.2%, p = 0.02), although their actual birthweights were similar. Obstetrical and neonatal outcomes were similar between those with sonographic EFW ≥ 3,800 and < 3,800 g. CONCLUSION: Larger EFW increased CD risk among pregnancies with actual neonatal macrosomia. Antenatally suspected macrosomia might alter labor management due to concerns for potential complications, especially when associated with primiparity, diabetes mellitus, or maternal obesity. The increase in the CD rate did not show an association with improved maternal and neonatal outcomes. KEY POINTS: · Antenatally suspected macrosomia might alter labor management due to concerns about complications.. · Larger EFW increased cesarean delivery risk among pregnancies with actual neonatal macrosomia.. · The increase in the cesarean delivery rate was not associated with improved outcomes..

Obstetrical outcomes of women with new-onset isolated proteinuria diagnosed after 24 weeks' gestation.

PURPOSE: To assess a possible association between marked proteinuria and the risk of preeclampsia with severe features, as defined by the American College of Obstetricians and Gynecologists. METHODS: This retrospective study included data recorded at a tertiary university-affiliated hospital between 2017 and 2022. Women at or beyond 24 weeks of gestation with proteinuria (protein levels > 300 mg in a 24 h urine collection) and normal blood pressure during the initial 48 h of admission were included. Obstetrical and neonatal outcomes were compared between women with mild proteinuria (300-1000 mg/24 h) and marked proteinuria (≥ 1000 mg/24 h). RESULTS: Among the women with marked proteinuria (n = 48) compared to those with mild proteinuria (n = 108), the incidences were higher of preeclampsia (50.0% vs. 22.2%, p = 0.001) and of preeclampsia with severe features (18.8% vs. 2.8%, p < 0.001). In multivariate analysis that adjusted for maternal age, primiparity, multiple pregnancy, uric acid level > 6 mg/dL and aspirin treatment, marked proteinuria was a risk factor for preeclampsia with severe features (adjusted odds ratio [aOR] = 10.2, confidence interval [CI] 95% 1.9-54.0, p = 0.007) and for small-for-gestational-age infants (aOR = 2.4, 95% CI 1.02-5.6, p = 0.001). Among women with marked compared to mild proteinuria, rates were also higher of labor induction (58.3% vs. 25.9%, p < 0.001), indicated preterm delivery (41.7% vs. 25.0%, p = 0.04) and admission to the neonatal intensive care unit (44.1% vs. 25.8%, p = 0.017). CONCLUSIONS: Women with marked compared to mild isolated proteinuria showed higher risk of developing preeclampsia with severe features and of delivering small-for-gestational-age neonates.

The accuracy of sonographic fetal weight in very preterm infants (≤32 weeks).

OBJECTIVE: To examine the accuracy of sonographic fetal weight to predict birthweight in very preterm infants (<32 weeks), and to compare the accuracy of estimated fetal weight (EFW) between those small for gestational age (SGA) and those appropriate for gestational age (AGA). STUDY DESIGN: A retrospective study was conducted of data recorded between January 2010 and March 2023. Included were women with singleton livebirths at 23+0-31+6 weeks who had an EFW within one week from delivery. Mean percentage error, mean absolute percentage error, and underestimation and overestimation rates were calculated. We compared the accuracy of EFW between SGA and AGA infants. RESULTS: In total, 360 women were included. The mean absolute percentage error was 7.8 % (range 0 %-68.9 %); for 207 (57.5 %) infants the percentage error was within ±10 %. Overestimation error >10 % was observed in 102 (28.3 %) infants and errors >20 % in 34 (9.4 %). Among infants born in the periviable period (23+0 - 25+6 weeks; N = 56), the mean absolute percentage error was 9.8 % (range: 0 %-40.3 %); the value was within ±10 % for only 28 periviable infants (50 %) and exceeded 20 % for 16.1 %. Among SGA compared to AGA infants, the mean absolute percentage error was higher (11.1% vs. 6.6 %, p = 0.035). Overestimation error >10 % was more frequent among SGA than AGA infants (55 (49.1 %) vs. 47 (19.0 %), p < 0.001). In a multivariate logistic regression analysis, SGA status was independently associated with a higher mean percentage error (beta = 0.260, p < 0.001) and an increased risk of an error >10 % (odds ratio = 2.1, 95 % confidence interval 1.2-3.5, p = 0.008). CONCLUSIONS: Sonographic EFW is limited in assessing very preterm infants, particularly those who are SGA or born during the periviable period. These limitations should be considered regarding impending very preterm births and concerns about abnormal fetal growth.

The impact on pregnancy outcomes of late-onset gestational diabetes mellitus diagnosed during the third trimester: A systematic review and meta-analysis.

BACKGROUND: Evidence is inconsistent regarding the impact of late gestational diabetes mellitus (GDM) on perinatal outcomes. OBJECTIVES: To evaluate associations of GDM diagnosed in the third trimester (late GDM) with adverse obstetric and neonatal outcomes. SEARCH STRATEGY: We searched Embase, Medline, and Web of Science from January 1, 1990 to June 16, 2022, for observational studies. SELECTION CRITERIA: Late GDM was defined as a de novo diagnosis, i.e. after a negative screening for diabetes in the second trimester, and at later than 28 weeks of pregnancy. DATA COLLECTION AND ANALYSIS: Each abstract and full-text article was independently reviewed by the same two authors. Quality was assessed with the use of the Newcastle-Ottawa Scale. Summary odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using a random effects model. MAIN RESULTS: Twelve studies were identified as meeting the inclusion criteria, including 3103 patients (571 with late GDM and 3103 controls). Incidences of shoulder dystocia (OR 1.57, 95% CI 1.02-2.42, P = 0.040), 5-minute Apgar score <7 (OR 1.80, 95% CI 1.14-2.86, P = 0.024), cesarean delivery (OR 1.98, 95% CI 1.51-2.60, P < 0.001), and emergent cesarean delivery (OR 1.57, 95% CI 1.02-2.40, P = 0.040) were significantly higher among women with late GDM than among the controls. The groups showed similarity in the rates of fetal macrosomia, large-for-gestational-age fetuses, neonatal hypoglycemia, and hypertensive disorders of pregnancy. CONCLUSIONS: This meta-analysis showed associations of late GDM with increased adverse perinatal outcomes. Prospective studies should evaluate the impact on perinatal outcomes of repeated third-trimester screening for late GDM.

Compared perinatal outcomes of two prophylactic antibiotic regimens for preterm premature rupture of membranes: a randomized controlled trial.

BACKGROUND: Prophylactic antibiotic use in preterm premature rupture of membranes is associated with significantly reduced intra-amniotic infection and improved neonatal outcome, although data are insufficient to determine the optimal antibiotic regimen. Ampicillin resistance has changed the epidemiology of neonatal sepsis. OBJECTIVE: This study aimed to determine the efficacy of two antibiotic regimens in prolonging the latency period in women with preterm premature rupture of membranes. STUDY DESIGN: This randomized-controlled trial was conducted in 3 tertiary university-affiliated hospitals. A total of 124 women with preterm premature rupture of membranes at <37 weeks of gestation were randomized into two antibiotic prophylactic protocols: ampicillin + roxithromycin and cefuroxime + roxithromycin. The latency period length, neonatal adverse outcomes, and maternal infectious morbidity, including intrauterine infection, intrapartum fever, postpartum antibiotic treatment, endometritis, and wound infection, were measured and compared. RESULTS: Maternal infectious morbidity was higher in the ampicillin group than in the cefuroxime group (17.7% vs 6.5%; 1-sided P value =.048). The pathogen distribution among placenta, membrane, cord, and uterine cultures differed between the groups (P=.017). Enterobacteriaceae spp. cultures were identified in 68.6% of the cultures in the ampicillin group and 43.2% in the cefuroxime group (P=.036). The composite neonatal adverse outcome was higher in the ampicillin group than in the cefuroxime group (55 [88.7%] vs 46 [74.2%]; 1-sided P value =.03). The proportion of primiparas with a latency period >4 days was significantly higher in the cefuroxime group than in the ampicillin group (odds ratio, 3.69; 95% confidence interval, 1.175-11.607; P=.025). CONCLUSION: In combination with roxithromycin, the use of cefuroxime, as a prophylactic in women with premature rupture of membranes at <37 weeks of gestation, showed longer pregnancy in primiparas and less maternal and neonatal morbidity than the use of ampicillin. Further larger studies are needed to support our results.

Maternal colonization with extended-spectrum ß-lactamase-producing Enterobacteriaceae in term versus preterm pregnancies.

OBJECTIVES: To examine the prevalence and risk factors of extended-spectrum ß-lactamase-producing Enterobacteriaceae (ESBL-E) colonization among women who delivered preterm and at term. METHODS: A prospective observational study of maternal ESBL-E rectovaginal colonization in threatened preterm labor and low-risk term pregnancies was conducted between March 2017 and August 2021 at the Galilee Medical Center, Israel. Obstetric and neonatal complications were compared between colonized and non-colonized mothers and neonates. RESULTS: ESBL-E colonization was similar in the preterm (n = 202) and term (n = 172) groups: 14.4% and 16.9%, respectively (P = 0.567). The maternal-neonatal transmission rate was higher in the preterm than the term group but the difference was not statistically significant: 42.1% and 22.2%, respectively (P = 0.42). Prematurity was a risk factor of neonatal ESBL-E colonization (odds ratio 1.33, 95% confidence interval 1.01-1.75, P = 0.041). ESBL-E-colonized preterm infants were delivered at an earlier gestational age and were more likely to have complications. Maternal ESBL-E colonization and transmission were more prevalent in pregnancies complicated by threatened preterm labor or premature rupture of membranes than in term pregnancies. CONCLUSIONS: These findings emphasize the need for further research on the cost-effectiveness of screening for maternal ESBL-E colonization in preterm labor, to prevent neonatal infectious complications. CLINICALTRIALS: gov identifier NCT03251885.

Third trimester re-screening for gestational diabetes in morbidly obese women despite earlier negative test can reveal risks for obstetrical complications.

AIM: We investigated associations of maternal obesity with late gestational diabetes mellitus (GDM) diagnosis (>34 weeks) in women with previous normal glucose screening, and associations of late GDM with obstetrical outcomes. METHODS: This retrospective cohort study assessed obstetrical and neonatal outcomes of 238 women with normal (24-28 week) glucose screening results, who underwent late repeat oral glucose tolerance tests (OGTT) (>34 weeks) due to a suspected LGA fetus (54.6%) or polyhydramnios (45.4%). A sub-analysis was performed of outcomes of women with late versus mid-trimester GDM. RESULTS: The GDM rate in repeat OGTT screening was 22.2% for the total sample, and 33% among women with morbid obesity. Among women with late GDM versus without late GDM, rates were higher for macrosomia, large-for-gestational-age fetus induction of labor, neonatal hypoglycemia, jaundice, and the need for phototherapy. Among women with late GDM, a higher pregestational BMI was associated with adverse maternal and perinatal outcomes. Higher risks for macrosomia and CS due to macrosomia were demonstrated in women with late vs. mid-trimester GDM. CONCLUSION: Late screening in pregnancy may reveal GDM among women with previous normal glucose screening, particularly among those with late third trimester BMI ≥ 35 kg/m2 , GDM in a previous pregnancy or fasting glucose >95 mg/dl. Women diagnosed with GDM at >34 weeks following normal glucose screening at 24-28 weeks are at higher risk for adverse perinatal outcomes. For women with morbid obesity, or suspected macrosomia or polyhydramnios in the late third trimester, and normal glucose screening in the second trimester, retesting should be considered.

Intrahepatic cholestasis of pregnancy - prevalence and ethnic distribution in northern Israel.

OBJECTIVES: Intrahepatic cholestasis of pregnancy (ICP) is charachterized by pruritis and elevated serum bile acids (BA) and is associated with adverse obstetrical outcomes. ICP etiology is poorly understood and its incidence varies with ethnicity and geographical distribution. OBJECTIVES: Explore the prevalence and characteristics of ICP in the different Northern Israeli ethnic groups and compare maternal and perinatal outcomes according to disease severity. MATERIAL AND METHODS: Single-center retrospective study. Women who were diagnosed with ICP based on clinical presentation and elevated fasting BA (≥ 10 µmol/L) were included. Disease incidence, maternal and neonatal complications were explored according to ethnic subgroups analysis and obstetrical complications were examined according to disease severity. RESULTS: The incidence of ICP in the study population was 0.58%. Higher ICP incidence was found in our cohort compared with other reports arising from Central Israel (p < 0.001). The Christian patients had a higher incidence of ICP (1.1%) and preeclampsia (23.1%). A higher rate of neonatal intensive care unit (NICU) admissions was found in the Arab Muslim and Christian groups compared with the Jewish and Druze groups (p = 0.007). A higher rate of preeclampsia was found in the severe (BA ≥ 40 µmol/L) ICP group (p < 0.001). Patients in the severe ICP group had earlier gestational age at delivery (37 versus 38.14 weeks, p < 0.001). Birth weight was significantly lower in the severe ICP group (p = 0.018). CONCLUSIONS: The incidence of ICP at our institution was 0.58%, which is higher compared with previous reported Israeli incidence. Higher ICP and preeclampsia incidence were found among Arab Christian patients.

Compliance with a new quality standard regarding administration of prophylactic antibiotics before cesarean section.

OBJECTIVE: Administering prophylactic antibiotics before cesarean section (CS) decreases postpartum infections significantly. They should be administered within 60 min prior to CS. In 2014 the Israeli Ministry of Health introduced the administration of pre-operative antibiotic prophylaxis for CS as a quality criterion. This was immediately adopted by the Galilee Medical Center (GMC). This study aimed to examine the compliance to this quality standard in the GMC under 3 criteria: the type of antibiotics, timing of administration, and use of one dose only. STUDY DESIGN: Data of women who underwent CS from the day of introducing the new quality standard on January 1, 2014, to July 31, 2015, were retrospectively analyzed. RESULTS: The study included 1790 women who delivered by elective (24.4%) or emergency CS. In general, the medical staff's compliance to this quality standard was 90.9; 95.6% of the patients received the correct antibiotic, 94.6% had it within 65 min before surgery to 5 min after it, and 100% received it in less than 24 h. There was an increase in the overall compliance rate with time (logistic regression, p = .001). During the day shift, 60.4% of CS were emergency surgeries while during the on-call shift (evening and night) almost all (99%) of the CS were emergencies (p < .001, 2-sided). In morning shift's emergency CS, only 4.1% of the cases were not given prophylactic antibiotics as against 7.8% in the on-call shift (p = .005). CONCLUSION: Over a period of 18 months, the compliance to the new quality standard of administering prophylactic antibiotics before CS was 90.9%. It was particularly high in the subgroup of elective CS during the morning shift. This high compliance rate may be attributed to the introduction of clear guidelines and assignment of a specific team member, the anesthesiologist, to administer the medication.Key pointsCompliance rate to the guideline was 90.9%.Compliance was better in the morning shift.Compliance was better for elective cesarean section.Compliance was not affected by time.

The Hormonal Milieu by Different Labor Induction Methods in Women with Previous Cesarean Section: a Prospective Randomized Controlled Trial.

The physiological pattern of hormonal and signaling molecules associated with labor induction is not fully clear. We conducted a preliminary study in order to investigate hormonal changes during labor induction in women with previous cesarean section. Eighty-seven women at term, with previous cesarean section, were randomized to undergo induction of labor by breast stimulation or intracervical balloon and compared with spontaneous labor (controls). Maternal serum levels of oxytocin, prostaglandin F2α, prostaglandin E2, prolactin, estradiol, and cortisol were analyzed at 0, 3, and 6 h post-induction initiation. Fetal umbilical cord hormones were measured. No significant difference was found in the induction-to-delivery time or mode of delivery between the induction groups. Maternal serum oxytocin levels decreased to a lesser extent in the breast stimulation group vs. the control group (p=0.003, p<0.001). In the breast stimulation and control groups, prostaglandin E2 levels increased as labor progressed (p=0.005, 0.002, respectively). Prostaglandin F2α levels decreased over time in the balloon group (p=0.039), but increased in the control group (p=0.037). Both induction methods had similar outcomes. The hormonal studies ascertained the hypothesized mechanisms, with oxytocin level higher during breast stimulation and lower in balloon induction. These observations could help clinicians determine the appropriate method for cervical ripening in women with previous cesarean section. Larger future studies are needed to examine the effect of these hormonal trends on the rate of successful labor induction and complications, such as uterine rupture, in women with previous uterine scars. ClinicalTrials.gov Identifier NCT04244747.

A novel extended prophylactic antibiotic regimen in preterm pre-labor rupture of membranes: A randomized trial.

OBJECTIVES: Prophylactic antibiotic use in preterm pre-labor rupture of membranes (PPROM) is associated with a significant reduction in intra-amniotic infection and improved neonatal outcome. However, data is insufficient to determine the optimal antibiotic regimen. Considering the rise in Escherichia coli and Klebsiella pneumonia early-onset sepsis rate and the emergence of ampicillin resistance, our aim is to compare the efficiency of two antibiotic regimens in prolonging pregnancy and reducing infectious morbidity. DESIGN: This multicenter randomized unblinded controlled prospective trial compared two antibiotic prophylactic protocols in PPROM: ampicillin + roxithromycin vs. cefuroxime + roxithromycin in 84 women with PPROM, from 12/2015-12/2019. RESULTS: The median latency period was significantly longer (p = 0.039) in the cefuroxime + roxithromycin group (4.63 [0.59-50.18] days) than in the ampicillin + roxithromycin group (2.3 [0.15-58.3] days). Neonatal admission to neonatal intensive care unit rate, hospitalization length, neonatal respiratory distress syndrome, neonatal fever, and need for respiratory support or mechanical ventilation, were similar between the groups. K. pneumonia cultures were significantly more frequent in the ampicillin + roxithromycin group. None of the cultures were group B Streptococcus positive. CONCLUSIONS: To prolong latency period and reduce gram-negative early-onset sepsis, cefuroxime + roxithromycin is recommended as the first-line protocol in PPROM. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02819570.

Routine uterine culture swab during cesarean section and its clinical correlations: A retrospective comparative study.

OBJECTIVES: Cesarean sections, particularly non-elective cesareans, are an important risk factor for the development of postpartum endometritis, a leading cause of postpartum febrile morbidity. We evaluated the yield of obtaining routine intrauterine culture during elective and non-elective cesarean sections, in the prevention and management of postpartum endometritis. STUDY DESIGN: A retrospective comparative study investigating the distribution of uterine cultures obtained immediately after fetus and placenta delivery during cesarean sections performed in a single tertiary hospital during 2017. True pathogenic bacteria were included in the study analysis and considered as positive results, while other contaminant bacteria were excluded. RESULTS: Positive uterine cultures were identified in 10.7 % (88/821) of cesarean sections, with no significant difference in prevalence between elective and non-elective cesareans. Escherichia coli (E.coli), isolated in 40.9 % of the positive cultures of all women, was the most common organism in non-elective cesareans vs. Group B Streptococcus (GBS) in elective cesareans. Higher rate of positive cultures was found in term vs. preterm cesareans (17.5 % vs 10.5 %, respectively, p-value = 0.04). E.coli was the most frequent pathogen reported in both women with intact membranes or premature rupture of membranes (46.3 % and 47.3 % respectively). Eight women (9.1 %) with positive cultures presented with postpartum fever; all had undergone non-elective cesarean section. In one-third of these cases the empirical antibiotic treatment was adjusted according to the uterine culture results and susceptibility testing results. CONCLUSIONS: Obtaining routine intrauterine cultures during non-elective cesarean sections might be useful for detecting significant pathogens and tailoring the antibiotic treatment in postpartum endometritis.

Optimal continuous support accompanying labor - the midwives' and laboring women's point of view.

BACKGROUND: Women who have continuous intrapartum support are more likely to have a shorter labor and spontaneous vaginal birth, and are less likely to need intrapartum analgesia than women who receive usual care without support. We aimed to determine what women in labor and midwives regard as the optimal number of labor supporters and whether they should be present during medical interventions. METHODS: A questionnaire was distributed to midwives participating in a national midwifery conference in June 2015. In addition, an anonymized questionnaire concerning the preferred number and type of supporters was distributed to laboring women at the beginning of labor and repeated post-partum in the maternity unit of a single tertiary medical center between March 2017 and January 2018. RESULTS: Of 124 midwives from 18 hospitals throughout Israel attending the conference, 92 (74%) completed the questionnaire. Eighty-three percent of the midwives who responded felt that more than two supporters interferes with their work. Eighty percent of the midwives work in obstetrical units that allow up to two labor supporters, and 82% of them felt that one or two supporters is optimal. Similarly, of the 140 laboring women surveyed, 84% preferred one or two supporters. There was no difference in the preferred number of supporters between the maternal pre- and post-partum questionnaires. The laboring women and midwives had differing opinions regarding supporter presence during vacuum extraction and perineal suture. Sixty-four percent of the midwives preferred that the supporter not be present during vacuum extraction, and 45% of them preferred that the supporter not be present during perineal suture. In contrast, among the laboring women, 78% preferred supporter presence during vacuum extraction, 76% during perineal suture and 74% during vaginal examination. Interestingly, even among the midwives, 82% preferred that the supporter remain during vaginal examination and 84% preferred the supporter remain during medical rounds. CONCLUSIONS: Serious consideration should be given to restricting the number of labor supporters to two, as both laboring woman and midwives consider that to be the optimal number. In light of the difference of opinion regarding presence of supporters during certain medical procedures, additional surveys concerning the points of view of obstetricians and laboring women in additional hospitals should be considered before establishing a national policy.

The effect of chart speed on fetal monitor interpretation.

OBJECTIVE: Electronic fetal heart monitor chart speeds vary between countries, and it is unclear whether differing chart speeds affect physician tracing interpretation. METHODS: Twenty-minute segments of 19 tracings were displayed on both 1 and 3 cm/min strips and interpreted by 14 physicians at the particular speed they were accustomed to reading. Interpretations of tracing characteristics were compared between groups using free margin kappa, a measure of interobserver agreement. RESULTS: Compared to 3 cm/min tracings, 1 cm/min tracings were significantly more often identified as having absent than minimal variability, and minimal than moderate variability. Accelerations were significantly more often identified in 1 versus 3 cm/min strips. There were no significant differences between groups with respect to baseline fetal heart rate, prolonged or repetitive decelerations, or American College of Obstetricians and Gynecologists tracing category. Neither chart speed had substantial interobserver agreement in tracing variables; however, agreement was consistently higher in 3 versus 1 cm/min tracings (all p < 0.05). CONCLUSIONS: Tracing interpretation is significantly affected by fetal monitor chart speed with regards to variability, acceleration and deceleration. Further studies are required to determine if differences in chart speed interpretation affect clinical management.

Reconsidering the Current Preterm Premature Rupture of Membranes Antibiotic Prophylactic Protocol.

OBJECTIVE: The purpose of our study was to determine whether the current antibiotic regimen for preterm premature rupture of membranes (PPROM) is adequate for covering the current causative agents and sensitivities of chorioamnionitis and early-onset neonatal sepsis. STUDY DESIGN: During a 3-year period, we retrieved the results from placental and amniotic membrane cultures obtained at delivery in cases of maternal fever, chorioamnionitis, and PPROM, and from blood cultures obtained from neonates with early-onset sepsis (EOS) in three participating hospitals. Sensitivity of pathogens to antimicrobial agents was performed using routine microbiologic techniques. RESULTS: There were 1,133 positive placental or amniotic cultures, 740 (65.3%) were from gram-negative Enterobacteriaceae. There were 27 neonates diagnosed with EOS with positive blood cultures. Aerobic Enterobacteriaceae accounted for 14 cases (52%) and group B streptococcus for 7 cases (26%). Of the Escherichia coli and Klebsiella sp., only 38% were sensitive to ampicillin. CONCLUSION: Local pathogens and their antibiotic sensitivity profiles should be explored every few years and an effective antibiotic protocol chosen to cover the main pathogens causing chorioamnionitis and EOS. Consideration should be made for changing ampicillin in women with PPROM to a regimen with better coverage of gram-negative Enterobacteriaceae.

Counseling for fetal macrosomia: an estimated fetal weight of 4,000 g is excessively low.

OBJECTIVE: Because of the known complications of fetal macrosomia, our hospital's policy has been to discuss the risks of shoulder dystocia and cesarean section (CS) in mothers with a sonographic estimated fetal weight (SEFW) ≥ 4,000 g at term. The present study was performed to determine the effect of this policy on CS rates and pregnancy outcome. STUDY DESIGN: We examined the pregnancy outcomes of the macrosomic (≥ 4,000 g) neonates in two cohorts of nondiabetic low risk women at term without preexisting indications for cesarean: (1) SEFW ≥ 4,000 g (correctly suspected macrosomia) and (2) SEFW < 4,000 g (unsuspected macrosomia). RESULTS: There were 238 neonates in the correctly suspected group and 205 neonates in the unsuspected macrosomia group, respectively. Vaginal delivery was accomplished in 52.1% of the suspected group and 90.7% of the unsuspected group, respectively, p < 0.001. There was no difference in the rates of shoulder dystocia. The odds ratio for CS was 9.0 (95% confidence interval, 5.3-15.4) when macrosomia was correctly suspected. CONCLUSION: The policy of discussing the risk of macrosomia with SEFW ≥ 4,000 g to women is not justified. A higher SEFW to trigger counseling for shoulder dystocia and CS, more consistent with American College of Obstetrics and Gynecology (ACOG) guidelines, should be considered.