3D/4D sonography moved prenatal diagnosis of fetal anomalies from the second to the first trimester of pregnancy

Geospatial and Socioeconomic Factors Interact to Predict Management and Outcomes in Cleft Lip and Palate Surgery: A Single Institution Study of 740 Patients

OBJECTIVE

Determine interactions between geospatial and socioeconomic factors influencing cleft lip and/or cleft palate (CL/P) management and outcomes.

DESIGN

Retrospective review and outcomes analysis (n = 740).

SETTING

Urban academic tertiary care center.

PATIENTS

740 patients undergoing primary (CL/P) surgery from 2009 to 2019.

MAIN OUTCOMES MEASURES

Prenatal evaluation by plastic surgery, nasoalveolar molding, cleft lip adhesion, and age at CL/P surgery.

RESULTS

Prenatal evaluation by plastic surgery was predicted by the interaction between higher patient median block group income and shorter patient distance from the care center (OR = 1.07, p = 0.022). Nasoalveolar molding was also predicted by the interaction between higher patient median block group income and shorter distance from the care center (OR = 1.28, p = 0.016), whereas cleft lip adhesion was predicted by higher patient median block group income alone (OR = 0.41, p < 0.001). Lower patient median block group income predicted later age at cleft lip (β = -67.25, p = 0.011) and cleft palate (β = -46.35, p = 0.050) repair surgery.

CONCLUSIONS

Distance from the care center and lower median income by block group interacted to significantly predict prenatal evaluation by plastic surgery and nasoalveolar molding for patients with CL/P at a large, urban, tertiary care center. Patients living farthest from the care center who received prenatal evaluation by plastic surgery or who underwent nasoalveolar molding had higher median block group income. Future work will determine mechanisms perpetuating these barriers to care.

Fetal arthrogryposis-what do we tell the prospective parents?

Arthrogryposis, also termed arthrogryposis multiplex congenita, is a descriptive term for conditions with multiple congenital contractures (MCC). The etiology is extremely heterogeneous. More than 400 specific disorders have been identified so far, which may lead to or are associated with MCC and/or fetal hypo- and akinesia as a clinical sign. With improved sensitivity of prenatal ultrasound and expanding prenatal diagnostic options, clinicians are tasked with providing early detection in order to counsel the prospective parents regarding further prenatal diagnostic as well as management options. We summarize the most important knowledge to raise awareness for early detection in pregnancy. We review essential points for counseling when MCC is detected in order to provide answers to common questions, which, however, cannot replace interdisciplinary expert opinion in the individual case.

Imaging fetal anatomy

Due to advancements in ultrasound techniques, the focus of antenatal ultrasound screening is moving towards the first trimester of pregnancy. The early first trimester however remains in part, a 'black box', due to the size of the developing embryo and the limitations of contemporary scanning techniques. Therefore there is a need for images of early anatomical developmental to improve our understanding of this area. By using new imaging techniques, we can not only obtain better images to further our knowledge of early embryonic development, but clear images of embryonic and fetal development can also be used in training for e.g. sonographers and fetal surgeons, or to educate parents expecting a child with a fetal anomaly. The aim of this review is to provide an overview of the past, present and future techniques used to capture images of the developing human embryo and fetus and provide the reader newest insights in upcoming and promising imaging techniques. The reader is taken from the earliest drawings of da Vinci, along the advancements in the fields of in utero ultrasound and MR imaging techniques towards high-resolution ex utero imaging using Micro-CT and ultra-high field MRI. Finally, a future perspective is given about the use of artificial intelligence in ultrasound and new potential imaging techniques such as synchrotron radiation-based CT to increase our knowledge regarding human development.

Applications of Advanced Ultrasound Technology in Obstetrics

Over the years, there have been several improvements in ultrasound technologies including high-resolution ultrasonography, linear transducer, radiant flow, three-/four-dimensional (3D/4D) ultrasound, speckle tracking of the fetal heart, and artificial intelligence. The aims of this review are to evaluate the use of these advanced technologies in obstetrics in the midst of new guidelines on and new techniques of obstetric ultrasonography. In particular, whether these technologies can improve the diagnostic capability, functional analysis, workflow, and ergonomics of obstetric ultrasound examinations will be discussed.

What is the Impact of Prenatal Counseling on Postnatal Cleft Treatment? Multidisciplinary Pathway for Prenatal Orofacial Cleft Care

ABSTRACT

In the pediatric general surgery literature, it has been shown that prenatal diagnosis of a congenital anomaly is an independent predictor of parental psychological distress. Surgical prenatal counseling can decrease parental anxiety by helping families understand the surgical needs and potential outcomes of their infant. In this retrospective analysis (n = 440), the authors sought to present our care pathway for prenatally diagnosed cleft lip and palate (CL/P) and explore the impact of cleft lip and palate-specific prenatal counseling on patient care by comparing the timing of clinical and surgical care between a cohort of patients who received prenatal CL/P consultation and a cohort of patients only seen postnatally. The authors hypothesize that our multidisciplinary prenatal care intervention is associated with earlier postnatal clinic visits and surgical repair. The care of all patients whose mother's presented for prenatal CL/P consultation (prenatal cohort, n = 118) was compared to all new CL/P patients without prenatal consultation at our institution (postnatal cohort, n = 322) from January 2015 through August 2019. 81.4% (n = 96) of the prenatal cohort returned for care postnatally while 2 pregnancies were interrupted, four neonates died, and 15 patients did not return for care. Prenatal consultation was associated with earlier postnatal clinic appointments (P < 0.001) as well as a shorter time to CL repair in patients with CL only (P = 0.002) and CLP (P = 0.047). Our described pre- and postnatal CL/P pathway is a multidisciplinary model associated with high retention rates from the prenatal period through complete surgical repair.

Obstetric ultrasound: where are we and where are we going?

Diagnostic ultrasound (DUS) is, arguably, the most common technique used in obstetrical practice. From A mode, first described by Ian Donald for gynecology in the late 1950s, to B mode in the 1970s, real-time and gray-scale in the early 1980s, Doppler a little later, sophisticated color Doppler in the 1990s and three dimensional/four-dimensional ultrasound in the 2000s, DUS has not ceased to be closely associated with the practice of obstetrics. The latest innovation is the use of artificial intelligence which will, undoubtedly, take an increasing role in all aspects of our lives, including medicine and, specifically, obstetric ultrasound. In addition, in the future, new visualization methods may be developed, training methods expanded, and workflow and ergonomics improved.

Ethical and Legal Dilemmas Around Termination of Pregnancy for Severe Fetal Hydrocephalus, Spina Bifida Aperta and Meningomyelocoella

Introduction:

There are many ethical and moral dilemmas regarding the termination of pregnancy(TOP) with severe fetal anomalies.

Aim:

Our aim is to present a case of severe fetal hydrocephalus (HCP), spina bifida aperta and, meningomyelocoella (MMC).

Case report:

A gynecologist examined a 23-year-old patient with vital pregnancy of 24/25 week of gestation (WG) with the anomaly of the fetus. At the Perinatological Medical Advisory Board, a decision was made that the pregnancy should be continued and monitored bearing in mind that pregnancy exceeded the legal framework for TOP. Medical Advisory Board’s ultrasound examination showed the following: severe hydrocephalus (HCP), spina bifida aperta, hyperehogen intestine, pes equinovarus. Via multidisciplinary consultation it was decided to make a delivery with the elective caesarian section (CS) causing as little trauma to the fetus as possible, with 37 WG completed due to the pelvic presentation and fetal anomalies. The patient gave birth via CS to a live female newborn–birth weight 3920 grams, birth length 56 cm, head circumference 48 cm, and Apgar score 8/8. The head was hydrocephalic with spaced suture. There was thoracolumbar defect of spina bifida aperta and meningomyelocele (MMC) 10x12 cm in size. An urgent surgical procedure - the external ventricular derivation of the liquor, and then the successful resection and plastic meningomyelocele was performed by a team of neuro and plastic surgeons. During the fourth postoperative day due to a suspicion of abscess collection and febrility of the mother a relaparotomy is performed and the abscess collection of Retzius space was found. Due to the fall in blood count, blood transfusion in a total dose of 580 ml was given. The patient was discharged on a home treatment as she had a regular general and local status. After the surgery, the condition of the newborn resulted in deterioration, the progression of HCP and dehiscence of head wounds and the thoracolumbar region, in spite of all the measures taken. At that time a decision was made to provide palliative care and this decision was conveyed to the mother. The child had a prolonged apnoeic episode and was not resuscitated. The child died in hospital after surviving for two months postpartum.

Conclusion:

Indication of TOP based on fetal anomalies could be a medical decision but also a personal moral choice of the mother related to legal rules, socio-cultural values and religious beliefs.

Fetal arthrogryposis: Challenges and perspectives for prenatal detection and management

Antenatal identification of fetuses with multiple congenital contractures or arthrogryposis multiplex congenita (AMC) may be challenging. The first clinical sign is often reduced fetal movement and/or contractures, as seen on prenatal ultrasounds. This can be apparent at any point, from early to late pregnancy, may range from mild to severe involvement, with or without associated other structural anomalies. Possible etiologies and their prognosis need to be interpreted with respect to developmental timing. The etiology of AMC is highly heterogeneous and making the specific diagnosis will guide prognosis, counseling and prenatal and perinatal management. Current ultrasound practice identifies only approximately 25% of individuals with arthrogryposis prenatally before 24 weeks of pregnancy in a general obstetrics care population. There are currently no studies and guidelines that address the question of when and how to assess for fetal contractures and movements during pregnancy. The failure to identify fetuses with arthrogryposis before 24 weeks of pregnancy means that physicians and families are denied reproductive options and interventions that may improve outcome. We review current practice and recommend adjusting the current prenatal imaging and genetic diagnostic strategies to achieve early prenatal detection and etiologic diagnosis. We suggest exploring options for in utero therapy to increase fetal movement for ongoing pregnancies.

Expert surgical consensus for prenatal counseling using the Delphi method

BACKGROUND

Pediatric surgeons frequently offer prenatal consultation for congenital pulmonary airway malformation (CPAM) and congenital diaphragmatic hernia (CDH); however, there is no evidence-based consensus to guide prenatal decision making and counseling for these conditions. Eliciting feedback from experts is integral to defining best practice regarding prenatal counseling and intervention.

METHODS

A Delphi consensus process was undertaken using a panel of pediatric surgeons identified as experts in fetal therapy to address current limitations. Areas of discrepancy in the literature on CPAM and CDH were identified and used to generate a list of content and intervention questions. Experts were invited to participate in an online Delphi survey. Items that did not reach first-round consensus were broken down into additional questions, and consensus was achieved in the second round.

RESULTS

Fifty-four surgeons (69%) responded to at least one of the two survey rounds. During round one, consensus was reached on 54 of 89 survey questions (61%), and 45 new questions were developed. During round two, consensus was reached on 53 of 60 survey questions (88%).

CONCLUSIONS

We determined expert consensus to establish guidelines regarding perinatal management of CPAM and CDH. Our results can help educate pediatric surgeons participating in perinatal care of these patients.

LEVEL OF EVIDENCE

V.

Diagnosis of fetal syndromes by three- and four-dimensional ultrasound: is there any improvement?

With all of our present knowledge, high technology diagnostic equipment, electronic databases and other available supporting resources, detection of fetal syndromes is still a challenge for healthcare providers in prenatal as well as in the postnatal period. Prenatal diagnosis of fetal syndromes is not straightforward, and it is a difficult puzzle that needs to be assembled and solved. Detection of one anomaly should always raise a suspicion of the existence of more anomalies, and can be a trigger to investigate further and raise awareness of possible syndromes. Highly specialized software systems for three- and four-dimensional ultrasound (3D/4D US) enabled detailed depiction of fetal anatomy and assessment of the dynamics of fetal structural and functional development in real time. With recent advances in 3D/4D US technology, antenatal diagnosis of fetal anomalies and syndromes shifted from the 2nd to the 1st trimester of pregnancy. It is questionable what can and should be done after the prenatal diagnosis of fetal syndrome. The 3D and 4D US techniques improved detection accuracy of fetal abnormalities and syndromes from early pregnancy onwards. It is not easy to make prenatal diagnosis of fetal syndromes, so tools which help like online integrated databases are needed to increase diagnostic precision. The aim of this paper is to present the possibilities of different US techniques in the detection of some fetal syndromes prenatally.

Three-dimensional Ultrasound in Detection of Fetal Anomalies

In the history of 3D/4D ultrasound technology, the great achievement was high definition (HD) live technology. This technology is a novel ultrasound technique that improves the 3D/4D images. HDlive ultrasound has resulted in remarkable progress in visualization of early embryos and fetuses and in the development of sonoembryology. HDlive uses an adjustable light source and software that calculates the propagation of light through surface structures in relation to the light direction. The virtual light source produces selective illumination, and the respective shadows are created by the structures where the light is reflected. This combination of light and shadows increases depth perception and produces remarkable images that are more natural than those obtained with classic three-dimensional (3D) ultrasound. The virtual light can be placed in the front, back, or lateral sides, where viewing is desired until the best image is achieved. A great advantage is that the soft can be applied to all images stored in the machine's memory. With HDlive ultrasound, both structural and functional developments can be assessed from early pregnancy more objectively and reliably and, indeed, the new technology has moved embryology from postmortem studies to the in vivo environment. Practically, in obstetrical ultrasound, HDlive could be used during all three trimesters of pregnancy.

How to cite this article

Pooh RK, Kurjak A. Three-dimensional Ultrasound in Detection of Fetal Anomalies. Donald School J Ultrasound Obstet Gynecol 2016;10(3):214-234.

Exposure to prenatal consultation during pediatric surgery residency: Implications for training

PURPOSE

Prenatal consultation is an important skill that should be learned during pediatric surgery training, but there are no formal guidelines for fellowship programs at this time. We sought to characterize the fellowship experience of recent pediatric surgery graduates and assess preparedness for providing prenatal consultation.

METHODS

An anonymous online survey of pediatric surgery fellows graduating in 2012 and 2013 was performed. We asked respondents to describe participation in prenatal consultation and preparedness to perform consultation. We measured demographics and fellowship characteristics and tested associations between these variables and preparedness to perform prenatal consultation.

RESULTS

A total of 49 out of 80 fellows responded to the survey (61% response rate). Most respondents (55%) saw five or fewer prenatal consults during fellowship, and 20% had not seen any prenatal consults. 47% said that fellowship could have better prepared them to perform prenatal consults. Fellows who saw more than 5 prenatal consults during fellowship (33% vs 77%, p=0.002) or described their fellowship as being structured to facilitate participation in prenatal consults (83% vs 27%, p<0.0001) were more likely to feel prepared. Stepwise logistic regression revealed that after adjusting for covariates, fellows graduating from programs that were 1) structured to facilitate participation in prenatal consults (OR 18, 95% CI 3.7-86.7), or 2) did NOT have an established fetal program (OR 5.5, 95% CI 1.1-27.8) were more likely to feel prepared.

CONCLUSION

Exposure to prenatal consultation varies greatly across pediatric surgery fellowships, and many recent graduates do not feel prepared to perform prenatal consultation. The presence of an established fetal program did not necessarily translate into improved fellow training. Efforts should be made to standardize the approach to fellow education in this area and ensure that adequate guidance and resources are available to recently graduated pediatric surgeons.

A Preliminary Study of Three-dimensional Sonographic Measurements of the Fetus

OBJECTIVES

This study was aimed at establishing an ideal method for performing three-dimensional measurements of the fetus in order to improve the estimation of fetal weight.

METHODS

The study consisted of two phases. Phase I was a prospective cross-sectional study performed between 28 and 40 weeks' gestation. The study population (n=110) comprised low-risk singleton pregnancies who underwent a routine third-trimester sonographic estimation of fetal weight. The purpose of this phase was to establish normal values for the fetal abdominal and head volumes throughout the third trimester. Phase II was a prospective study that included patients admitted for an elective cesarean section or for induction of labor between 38 and 41 weeks' gestation (n=91). This phase of the study compared the actual birth weight to two- (2D) and three-dimensional (3D) measurements of the fetus. Conventional 2D ultrasound fetal biometry was performed measuring the biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur diaphysis length (FL). Volume estimates were computed utilizing Virtual Organ Computer-aided AnaLysis (VOCAL), and the correlation between measured volumes and actual neonatal weight was calculated.

RESULTS

Overall, this longitudinal study consisted of 110 patients between 28 and 41 weeks' gestation. Normal values were computed for the fetal abdomen and head volume throughout the third trimester. Ultrasound examination was performed within three days prior to delivery on 91 patients. A good correlation was found between birth weight and abdominal volume (r=0.77) and between birth weight and head volume (r=0.5). Correlation between bidimensional measurements and actual fetal weights was found to be comparable with previously published correlations.

CONCLUSION

Volume measurements of the fetus may improve the accuracy of estimating fetal size. Additional studies using different volume measurement of the fetus are necessary.

Development of the stratum corneum

In 2015, Professor Ronald (Ronnie) Marks will celebrate his 80th birthday and the 35th year since assuming the Chair of Dermatology at the University of Wales College of Medicine in Cardiff, Wales. Ronnie's long and prolific career is well deserving of a celebratory Festschrift. Among his many accomplishments, Marks was an early champion of quantitative measurements and the application of bioengineering methods to clinical skin science, with particular focus on stratum corneum biology and the measurement of skin appearance. Appealing to Ronnie's wry sense of humour, I would characterize his career in the words of the native Welshman, Dylan Thomas, who published an unfinished novel in 1955 entitled Adventures in the Skin Trade. Ronnie Marks has been a quintessential and imaginative adventurer in the 'skin trade', and he continues to forge new trails for others to follow. The areas highlighted below are emblematic of Ronnie's varied research interests and his impact on stimulating experimental questions for me and future investigators of epidermal differentiation and stratum corneum development.

Three- and four-dimensional HDlive rendering image of fetal acrania/exencephaly in early pregnancy

We present two cases of fetal acrania/exencephaly reconstructed employing the three- (3D) and four-dimensional (4D) HDlive rendering mode in early gestation. Two fetuses with acrania/exencephaly were studied with the 3D/4D HDlive rendering mode at 13 and 15 weeks, respectively. In Case 1, at 13 weeks' gestation, deformed and degenerated brain tissues were clearly shown using the 3D/4D HDlive rendering mode. In Case 2, at 15 weeks and 6 days of gestation, two amniotic bands and acrania/exencephaly were depicted with the 3D/4D HDlive rendering mode. Fragile brain hemispheres with amniotic bands were rocking with fetal movements. The 3D/4D HDlive rendering mode provides physicians, couples, and their families with important and additional information, and has the potential to supplement two-dimensional and conventional 3D ultrasound in diagnosing fetal acrania/exencephaly.

Neurosonoembryology by three-dimensional ultrasound

High-resolution three-dimensional (3D) ultrasound has enabled the visualization of small embryos and fetuses, and embryology in vivo - '3D sonoembryology' - has been established based on conventional embryology. Recently developed imaging techniques allow the definition of in-vivo anatomy including visualization of the embryonic circulation and dynamic features that could not be characterized in fixed specimens. Three-dimensional ultrasound has facilitated increasingly accurate and objective prenatal diagnoses of cranium bifidum/spina bifida, holoprosencephaly and associated anomalies in the first trimester and may allow detection of pathologic central nervous system (CNS) development at an earlier gestational age. It may be no exaggeration to suggest that prenatal diagnoses of fetal abnormalities have shifted from second to first trimester. However, fetal brain develops rapidly in the second trimester, therefore early scanning covers only selected CNS anomalies described in this article and serial continuous observation in the second trimester will be required.