Perinatal management of fetal supraventricular tachycardia complicated by maternal pertussis

Prenatal pertussis has become a concern once again with the reappearance of the disease in the USA. A 30-year-old mother whose pregnancy was complicated with fetal arrhythmia was referred for further evaluation in the third trimester. After initial treatment with antiarrhythmic medications due to continued irregular rhythm, she was revisited for persistent hacking cough at 38 weeks gestational age. PCR examination confirmed pertussis diagnosis. Owing to increased risk of digoxin toxicity with concurrent antibiotic administration, antiarrhythmic medication was discontinued. Delivery was induced 2 days after the initiation of azithromycin therapy to prevent the transmission of the disease to the neonate. A well-planned delivery in a patient with prenatal diagnosis prevents neonatal infection while considering the obstetrical dilemma for concurrent management of the intrauterine arrhythmia and antibiotic administration.

Health care justice and its implications for current policy of a mandatory waiting period for elective tubal sterilization

Tubal sterilization during the immediate postpartum period is 1 of the most common forms of contraception in the United States. This time of the procedure has the advantage of 1-time hospitalization, which results in ease and convenience for the woman. The US Collaborative Review of Sterilization Study indicates the high efficacy and effectiveness of postpartum tubal sterilization. Oral and written informed consent is the ethical and legal standard for the performance of elective tubal sterilization for permanent contraception for all patients, regardless of source of payment. Current health care policy and practice regarding elective tubal sterilization for Medicaid beneficiaries places a unique requirement on these patients and their obstetricians: a mandatory waiting period. This requirement originates in decades-old legislation, which we briefly describe. We then introduce the concept of health care justice in professional obstetric ethics and explain how it originates in the ethical concepts of medicine as a profession and of being a patient and its deontologic and consequentialist dimensions. We next identify the implications of health care justice for the current policy of a mandatory 30-day waiting period. We conclude that Medicaid policy allocates access to elective tubal sterilization differently, based on source of payment and gender, which violates health care justice in both its deontologic and consequentialist dimensions. Obstetricians should invoke health care justice in women's health care as the basis for advocacy for needed change in law and health policy, to eliminate health care injustice in women's access to elective tubal sterilization.

Congenital heart anomaly in newborns with congenital diaphragmatic hernia: a single-center experience

OBJECTIVE

To evaluate the impact of the presence of a congenital heart anomaly (CHA) and its potential contribution to morbidity and mortality in infants with congenital diaphragmatic hernia (CDH).

METHODS

In this retrospective cohort study, prenatal and postnatal data of all newborns diagnosed with CDH between January 2004 and December 2012 in a single center were reviewed. Cases were classified into two groups: those with 'isolated' CDH and those with both CDH and CHA. Patients with CHA were further subclassified into those with a major or minor CHA based on the Risk Adjustment for Congenital Heart Surgery-1 (RACHS-1), and the Society of Thoracic Surgeons-European Association for Cardiothoracic Surgery (STS-EACTS) scoring systems. Patients with associated non-cardiac anomalies, including 'syndromic cases', were excluded from the analysis. Primary and secondary outcomes were survival up to 1 year of age and a need for extracorporeal membrane oxygenation (ECMO), respectively.

RESULTS

Of the 180 infants with CDH, 41 were excluded because of the presence of non-cardiac associated anomalies, 118 had isolated CDH and 21 had CDH with CHA (16 with minor and five with major CHA). Receiver-operating characteristics curve analysis demonstrated that the best cut-off for survival was when the score for CHA was ≤ 2 for both RACHS-1 (area under the curve (AUC), 0.74 (P = 0.04); sensitivity, 80.0%; specificity, 87.5%) and STS-EACTS (AUC, 0.83 (P = 0.03); sensitivity, 100%; specificity, 87.5%). Survival rate at 1 year was significantly lower in those with CHD and a major CHA (40.0%; P = 0.04) than in those with isolated CDH (77.1%) and those with CDH and a minor CHA (81.3%). We found no significant differences among the groups with regard to the need for ECMO.

CONCLUSIONS

In general, a milder form of CHA does not appear to have a negative impact on the survival of infants with CDH. However, mortality appears to be significantly higher in infants with CDH and a major form of CHA. The scoring systems appear to be useful as predictors for classifying the effects of CHA in this population of patients.

Prenatal Diagnosis of Renal Vein Thrombosis: A Case Report and Literature Review

Background: Renal vein thrombosis (RVT) is a well-characterized condition among neonates; however, this complication is rarely diagnosed prenatally. Methods: In this report, we describe a fetus with unilateral RVT and summarize the literature regarding prenatal diagnostic criteria and postnatal prognosis. We searched the English, French and Spanish literature (MEDLINE, PubMed and EMBASE) for cases with prenatal diagnosis of RVT. Results: Including our case, a total of 23 fetuses with fetal RVT were reviewed in the present study. All cases were diagnosed in the third trimester, and the survival rate among these cases was 63%. Enlargement of the kidney was the most commonly associated initial ultrasound finding. The only ultrasound finding significantly associated with mortality was the presence of bilateral RVT. Discussion: The etiology of fetal RVT is still unclear. Considering the large number of cases with RVT that manifest in the first days of life, prenatal diagnosis of this condition has relevance.

Comparison between laparoscopically assisted and standard fetoscopic laser ablation in patients with anterior and posterior placentation in twin-twin transfusion syndrome: a single center study

BACKGROUND

The objective of our study was to compare outcomes following laparoscopically assisted procedure (LAP group) with those seen following a standard approach used in patients with either an anterior placenta (SAP group) or posterior placenta (SPP group).

METHOD

This was a retrospective review of all the cases of twin-twin transfusion syndrome treated in our fetal center from October 2011 to July 2013. Technical characteristics of the procedure, perinatal survival outcome, and maternal morbidity were compared.

RESULTS

The laser procedure time was significantly longer in the SAP group (44 ± 10 min) in contrast with SPP (19.3 ± 13.9 min, p < 0.001) and LAP group (32 ± 11 min, p: 0.012). Preterm premature rupture of membranes (PPROM) before 32 and 34 weeks of pregnancy was significantly more common with LAP versus SAP and SPP (90 vs 33.3 and 70.8% for 32 weeks respectively, p: 0.015; 100 vs 50 and 79.1% for 34 weeks respectively, p: 0.021). In terms of maternal morbidity and neonatal outcome, there were no significant differences between the three groups.

CONCLUSION

LAP may be useful in cases where SAP is not feasible. Despite the increased risk of PPROM with LAP, perinatal survival and maternal outcomes are similar to that seen in SAP and SPP patients.

Maternal morbidity in patients with morbidly adherent placenta treated with and without a standardized multidisciplinary approach

OBJECTIVE

The purpose of this study was to test the hypothesis that a standardized multidisciplinary treatment approach in patients with morbidly adherent placenta, which includes accreta, increta, and percreta, is associated with less maternal morbidity than when such an approach is not used (nonmultidisciplinary approach).

STUDY DESIGN

A retrospective cohort study was conducted with patients from 3 tertiary care hospitals from July 2000 to September 2013. Patients with histologically confirmed placenta accreta, increta, and percreta were included in this study. A formal program that used a standardized multidisciplinary management approach was introduced in 2011. Before 2011, patients were treated on a case-by-case basis by individual physicians without a specific protocol (nonmultidisciplinary group). Estimated blood loss, transfusion of packed red blood cells, intraoperative complications (eg, vascular, bladder, ureteral, and bowel injury), neonatal outcome, and maternal postoperative length of hospital stay were compared between the 2 groups.

RESULTS

Of 90 patients with placenta accreta, 57 women (63%) were in the multidisciplinary group, and 33 women (37%) were in the nonmultidisciplinary group. The multidisciplinary group had more cases with percreta (P = .008) but experienced less estimated blood loss (P = .025), with a trend to fewer blood transfusions (P = .06), and were less likely to be delivered emergently (P = .001) compared with the nonmultidisciplinary group. Despite an approach of indicated preterm delivery at 34-35 weeks of gestation, neonatal outcomes were similar between the 2 groups.

CONCLUSION

The institution of a standardized approach for patients with morbidly adherent placentation by a specific multidisciplinary team was associated with improved maternal outcomes, particularly in cases with more aggressive placental invasion (increta or percreta), compared with a historic nonmultidisciplinary approach. Our standardized approach was associated with fewer emergency deliveries.

Does early second-trimester sonography predict adverse perinatal outcomes in monochorionic diamniotic twin pregnancies?

OBJECTIVES

To determine whether intertwin discordant abdominal circumference, femur length, head circumference, and estimated fetal weight sonographic measurements in early second-trimester monochorionic diamniotic twins predict adverse obstetric and neonatal outcomes.

METHODS

We conducted a multicenter retrospective cohort study involving 9 regional perinatal centers in the United States. We examined the records of all monochorionic diamniotic twin pregnancies with two live fetuses at the 16- to 18-week sonographic examination who had serial follow-up sonography until delivery. The intertwin discordance in abdominal circumference, femur length, head circumference, and estimated fetal weight was calculated as the difference between the two fetuses, expressed as a percentage of the larger using the 16- to 18-week sonographic measurements. An adverse composite obstetric outcome was defined as the occurrence of 1 or more of the following in either fetus: intrauterine growth restriction, twin-twin transfusion syndrome, intrauterine fetal death, abnormal growth discordance (≥20% difference), and very preterm birth at or before 28 weeks. An adverse composite neonatal outcome was defined as the occurrence of 1 or more of the following: respiratory distress syndrome, any stage of intraventricular hemorrhage, 5-minute Apgar score less than 7, necrotizing enterocolitis, culture-proven early-onset sepsis, and neonatal death. Receiver operating characteristic and logistic regression-with-generalized estimating equation analyses were constructed.

RESULTS

Among the 177 monochorionic diamniotic twin pregnancies analyzed, intertwin abdominal circumference and estimated fetal weight discordances were only predictive of adverse composite obstetric outcomes (areas under the curve, 79% and 80%, respectively). Receiver operating characteristic curves showed that intertwin discordances in abdominal circumference, femur length, head circumference, and estimated fetal weight were not acceptable predictors of twin-twin transfusion syndrome or adverse neonatal outcomes.

CONCLUSIONS

In our cohort, only second-trimester abdominal circumference and estimated fetal weight discordances in monochorionic diamniotic twin pregnancies were predictive of adverse composite obstetric outcomes. Twin-twin transfusion syndrome and adverse neonatal outcomes were not predicted by any of the intertwin discordances measured.

Prenatal diagnosis of CLOVES syndrome confirmed by detection of a mosaic PIK3CA mutation in cultured amniocytes

Congenital lipomatous asymmetric overgrowth of the trunk, lymphatic, capillary, venous, and combined-type vascular malformations, epidermal nevi, skeletal and spinal anomalies (CLOVES) syndrome, a segmental overgrowth syndrome, is caused by post zygotic somatic mutations in PIK3CA, a gene involved in the receptor tyrosine kinase phosphatidylinositol 3-kinase (PI3)-AKT growth-signaling pathway. Prenatal ultrasound findings of lymphovascular malformations, segmental overgrowth and skeletal defects can raise suspicion for CLOVES syndrome, but molecular confirmation of PIK3CA mutations on prenatally obtained samples is challenging because of somatic mosaicism. We detected a mosaic disease-causing mutation in PIK3CA by sequencing of DNA extracted from cultured amniotic cells, but not from DNA directly prepared from an amniotic fluid sample in a fetus with prenatally suspected CLOVES syndrome. The infant was born prematurely and displayed severe lymphovascular malformations and segmental overgrowth consistent with a clinical diagnosis of CLOVES syndrome; he passed away at 29 days of life. We discuss the complexities and limitations of genetic testing for somatic mosaic mutations in the prenatal period and highlight the potential need for multiple approaches to arrive at a molecular diagnosis. © 2014 Wiley Periodicals, Inc.

Short-term neonatal outcomes in diamniotic twin pregnancies delivered after 32 weeks and indications of late preterm deliveries

OBJECTIVE

We sought to compare neonatal outcomes in twin pregnancies following moderately preterm birth (MPTB), late preterm birth (LPTB), and term birth and determine the indications of LPTB.

STUDY DESIGN

We performed a retrospective cohort study. MPTB was defined as delivery between 32(0/7) and 33(6/7) weeks and LPTB between 34(0/7) and 36(6/7) weeks. The composite neonatal adverse respiratory outcome was defined as respiratory distress syndrome and/or bronchopulmonary dysplasia. The composite neonatal adverse nonrespiratory outcome included early onset culture-proven sepsis, necrotizing enterocolitis, retinopathy of prematurity, intraventricular hemorrhage, or periventricular leukomalacia. LPTB cases were categorized as spontaneous (noniatrogenic), evidence-based iatrogenic, and non-evidence-based (NEB) iatrogenic.

RESULTS

Of the 747 twin deliveries during the study period, 453 sets met the inclusion criteria with 22.7% (n = 145) MPTB, 32.1% (n = 206) LPTB, and 15.9% (n = 102) term births. Compared with term neonates, the composite neonatal adverse respiratory outcome was increased following MPTB (relative risk [RR] 24; 95% confidence interval [CI] 3.0 to 193.6) and LPTB (RR 13.7; 95% CI 1.8 to 101.8). Compared with term neonates, the composite neonatal adverse nonrespiratory outcome was increased following MPTB (RR 22.3; 95% CI 3.9 to 127.8) and LPTB (RR 5.5; 95% CI 1.1 to 27.6). Spontaneous delivery of LPTB was 63.6% (n = 131/206) and the rate of iatrogenic delivery was 36.4% (n = 75/206). The majority, 66.6% (n = 50/75), of these iatrogenic deliveries were deemed NEB, giving a total of 24.2% (50/206) NEB deliveries in LPTB group.

CONCLUSION

Our data demonstrate a high rate of late preterm birth among twin pregnancies, with over half of nonspontaneous early deliveries due to NEB indications. Although our morbidity data will be helpful to providers in counseling patients, our finding of high NEB indications underscores the need for systematic evaluation of indications for delivery in LPTB twin deliveries. Furthermore, this may lead to more effective LPTB rate reduction efforts.

First-trimester sonographic prediction of obstetric and neonatal outcomes in monochorionic diamniotic twin pregnancies

OBJECTIVES

The purpose of this study was to investigate whether discordant nuchal translucency and crown-rump length measurements in monochorionic diamniotic twins are predictive of adverse obstetric and neonatal outcomes.

METHODS

We conducted a multicenter retrospective cohort study including all monochorionic diamniotic twin pregnancies with two live fetuses at the 11-week to 13-week 6-day sonographic examination who had serial follow-up sonography until delivery. Isolated nuchal translucency, crown-rump length, and combined discordances were correlated with adverse obstetric outcomes, individually and in composite, including the occurrence of 1 or more of the following in either fetus: intrauterine growth restriction (IUGR), twin-twin transfusion syndrome (TTTS), intrauterine fetal death (IUFD), growth discordance (≥ 20%), and preterm birth before 28 weeks' gestation. Correlations with adverse composite neonatal outcomes were also studied. A receiver operating characteristic curve analysis and a logistic regression analysis with a generalized estimating equation were conducted.

RESULTS

Fifty-four of the 177 pregnancies included (31%) had an adverse composite obstetric outcome, with TTTS in 19 (11%), IUGR in 21 (12%), discordant growth in 14 (8%), IUFD in 14 (8%), and preterm birth before 28 weeks in 10 (6%). Of the 254 neonates included in the study, 69 (27%) were complicated by adverse composite neonatal outcomes, with respiratory distress syndrome being the most common (n = 59 [23%]). The areas under the curve for the combined discordances to predict composite obstetric and neonatal outcomes were 0.62 (95% confidence interval, 0.52-0.72), and 0.54 (95% confidence interval, 0.46-0.61), respectively.

CONCLUSIONS

In our population, nuchal translucency, crown-rump length, and combined discordances in monochorionic diamniotic twin pregnancies were not predictive of adverse composite obstetric and neonatal outcomes.

Perinatal outcomes based on the institute of medicine guidelines for weight gain in twin pregnancies

OBJECTIVE

To estimate the impact of the Institute of Medicine's (IOM) weight gain recommendations on perinatal outcomes in twin pregnancies.

METHODS

In this multicenter cohort study, using the 2009 IOM guidelines, we examined pregnancy outcomes in 570 uncomplicated diamniotic twin pregnancies. Subjects were grouped according to pre-pregnancy body mass index. Perinatal outcomes were assessed based on whether maternal weekly weight gain was less than, at, or in excess of the recommended IOM guidelines.

RESULTS

In women with a normal pre-pregnancy BMI, patients whose weight gain met the IOM recommendations had a significantly higher mean gestational age at delivery; less prematurity and larger birth weight infants compared to women whose weekly weight gain was less or excess than the recommended IOM guidelines. Similarly, when compared with their low weight gain counterparts, overweight women with appropriate weight gain had improved outcomes including higher mean gestational age at delivery, higher birth weight infants and less prematurity. In obese women, the amount of pregnancy weight gain did not impact perinatal outcomes.

CONCLUSION

Our results confirm that weekly maternal weight gain according to the IOM guidelines results in improved outcomes in twin pregnancies. Importantly, women with a normal or overweight pre-pregnancy BMI whose weekly weight gain was less than recommended, had increased risks of prematurity and lower birth weight infants. Similarly, women with a normal pre-pregnancy BMI whose weekly weight gain was excess than recommended had increased risks of prematurity and lower birth weight infants.

Fetoscopic laser ablation of placental anastomoses in twin-twin transfusion syndrome using 'Solomon technique'

OBJECTIVE

To document perinatal outcomes following use of the 'Solomon technique' in the selective photocoagulation of placental anastomoses for severe twin-twin transfusion syndrome (TTTS).

METHODS

Between January 2010 and July 2012, data were collected from 102 consecutive monochorionic twin pregnancies complicated by severe TTTS that underwent fetoscopic laser ablation at four different centers. We compared outcomes between subjects that underwent selective laser coagulation using the Solomon technique (cases) and those that underwent selective laser coagulation without this procedure (controls).

RESULTS

Of the 102 pregnancies examined, 26 (25.5%) underwent the Solomon technique and 76 (74.5%) did not. Of the 204 fetuses, 139 (68.1%) survived up to 30 days of age. At least one twin survived in 82 (80.4%) pregnancies and both twins survived in 57 (55.9%) pregnancies. When compared with the control group, the Solomon-technique group had a significantly higher survival rate for both twins (84.6 vs 46.1%; P < 0.01) and a higher overall neonatal survival rate (45/52 (86.5%) vs 94/152 (61.8%); P < 0.01). Use of the Solomon technique remained independently associated with dual twin survival (adjusted odds ratio (aOR), 11.35 (95% CI, 3.11-53.14); P = 0.0007) and overall neonatal survival rate (aOR, 4.65 (95% CI, 1.59-13.62); P = 0.005) on multivariable analysis. There were no cases of recurrent TTTS or twin anemia-polycythemia sequence (TAPS) in the Solomon-technique group.

CONCLUSIONS

Use of the Solomon technique following selective laser coagulation of placental anastomoses appears to improve twin survival and may reduce the risk of recurrent TTTS and TAPS. Our data support the idea of performing a randomized controlled trial to evaluate the effectiveness of the Solomon technique.

Perinatal outcome after fetoscopic release of amniotic bands: a single-center experience and review of the literature

OBJECTIVES

To present two successful cases of fetoscopic release of amniotic bands with umbilical cord involvement and provide a review of the literature on fetal intervention for amniotic band syndrome (ABS).

METHODS

Two cases of ABS were considered in conjunction with a review of the literature. A total of 14 fetuses with ABS underwent fetoscopic intervention between 1965 and 2012. Two of the authors independently completed literature searches in PubMed, Ovid and MEDLINE for articles related to ABS.

RESULTS

Among 14 cases of ABS (12 published and our own two), 57% and 7% were complicated by preterm premature rupture of membranes and spontaneous preterm birth, respectively. Overall, fetoscopic intervention preserved limb function in 50% (7/14) of cases. Three cases involved intraoperative complications including intra-amniotic bleeding and uterine wall bleeding, and incomplete procedure due to ineffective equipment.

CONCLUSION

Fetoscopic release of amniotic bands with minimally invasive surgery may allow preservation of life and/or limb function in cases of ABS. The acceptable functional outcome in 50% of cases is reassuring, although more experience and further studies are needed to determine the selection criteria that will justify the risk of this invasive in-utero therapy for ABS.

Efficacy of the genetic sonogram in a stepwise sequential protocol for down syndrome screening

OBJECTIVES

The purpose of this study was to evaluate the efficacy of the genetic sonogram in Down syndrome screening for women who have received the stepwise sequential test.

METHODS

This retrospective cohort study included women with singleton pregnancies who underwent stepwise sequential (first-trimester combined and second-trimester serum) screening and then had a genetic sonogram between March 2005 and January 2010. Stepwise sequential Down syndrome risks were multiplied by either a positive or negative likelihood ratio based on the second-trimester sonographic findings to determine the final Down syndrome risk. A final Down syndrome risk of 1:270 or higher was considered screen positive.

RESULTS

A total of 6286 women fulfilled our criteria, including 17 with Down syndrome-affected fetuses. After stepwise sequential testing, the Down syndrome detection rate was 88.2% (15 of 17), and after the genetic sonogram, there was a non-significant reduction in detection to 82.4% (14 of 17; P > .05). For the 6269 unaffected pregnancies, the genetic sonogram converted 58 screen-negative results (1%) to positive and 183 screen-positive results (3.1%) to negative. The net effect was a change in the false-positive rate from 6.2% (390 of 6269) after stepwise sequential screening to 4.2% (266 of 6269) after the genetic sonogram.

CONCLUSIONS

The genetic sonogram should be applied cautiously for women who have received prior prenatal screening tests. Women with screen-positive results need to be counseled that a negative sonographic result can be falsely reassuring. Conversely, for women with screen-negative results who have a risk close to the cutoff, a sonographic examination could assist in the decision of whether to accept or reject amniocentesis.

Effect of morphine on the reduced uteroplacental perfusion model of pre-eclampsia in rats

OBJECTIVES

To investigate the effect of morphine on the reduced uteroplacental perfusion pressure (RUPP) model of pre-eclampsia in rats.

STUDY DESIGN

The abdominal aorta and ovarian arteries of pregnant rats were isolated and clipped on gestational day 14. The chronic morphine treatment group received naltrexone 5 mg/kg 1h before each dose of morphine. L-nitromonomethylarginine 2 mg/kg was administrated in the same pattern. The control group received saline 10 ml/kg. Systolic blood pressure, blood urea nitrogen (BUN), creatinine, creatinine clearance, urinary protein, urinary nitrite/nitrate excretion, and fetal and placental weights were determined.

RESULTS

Morphine significantly reduced systolic blood pressure, fetal and placental weights, plasma BUN, creatinine and urinary protein in RUPP rats compared with control rats. Urinary nitrite/nitrate excretion and creatinine clearance were significantly increased in response to morphine treatment.

CONCLUSION

Morphine reduced blood pressure and improved renal function in the RUPP model of pre-eclampsia, but this was associated with reduced fetal and placental weights.

Fetal hydronephrosis as a predictor of neonatal urologic outcomes

OBJECTIVES

The ability to predict surgically relevant fetal renal hydronephrosis is limited. We sought to determine the most efficacious second- and third-trimester fetal renal pelvis anteroposterior diameter cutoffs to predict the need for postnatal surgery.

METHODS

We retrospectively reviewed the medical records of mothers and neonates who had a prenatal sonographic examination in our Perinatal-Pediatric Urology Clinic and received follow-up care. Hydronephrosis was defined as a renal pelvis anteroposterior diameter of 5 mm or greater in the second trimester and 7 mm or greater in the third trimester. Hydronephrosis was subdivided into mild, moderate, and severe.

RESULTS

Of 8453 fetuses, 96 met the criteria and were referred to our clinic. Isolated hydronephrosis was diagnosed in 74 fetuses, of which 53 received postnatal follow-up evaluations. The areas under the receiver operating characteristic curves for predicting postnatal surgery in the second and third trimesters were 0.770 and 0.899, respectively. The second-trimester renal anteroposterior diameter threshold that best predicted post-natal surgery was 9.5 mm (sensitivity, 71.4%; specificity, 81.1%). The third-trimester threshold that best predicted postnatal surgery was 15.0 mm (sensitivity, 85.7%; specificity, 94.6%).

CONCLUSIONS

The fetal renal anteroposterior diameter on second- and third-trimester sonography is predictive of an increased risk for neonatal urologic surgery. Surgical risk is best predicted by a third-trimester renal anteroposterior diameter threshold of 15 mm.