Abstract:
:Nuchal translucency (NT) describes an echo-free area, below the skin, in the posterior nuchal and back region of the fetus and is typically observed in the first and early second trimester of pregnancy. A wide NT has been correlated with chromosomal and congenital abnormalities in the fetus. An accurate NT measurement is a critical component of the estimation of Down syndrome risk in the first trimester of pregnancy and the Nuchal Translucency Quality Review Program (NTQR) identified nine criteria that ensure an accurate measurement of NT during ultrasound examination. The purpose of this chapter is to present the technical aspects of obtaining an accurate NT measurement on ultrasound as outlined by the NTQR.
journal_name
Semin Perinatoljournal_title
Seminars in perinatologyauthors
Abuhamad Adoi
10.1053/j.semperi.2005.12.004keywords:
subject
Has Abstractpub_date
2005-12-01 00:00:00pages
376-9issue
6eissn
0146-0005issn
1558-075Xpii
S0146-0005(05)00112-6journal_volume
29pub_type
杂志文章abstract::The ductus arteriosus is a vital fetal structure designed to close shortly after birth. Although many physiologic and pharmacologic investigations have characterized the closure of this structure, genetic studies of persistent patency of the ductus arteriosus (patent ductus arteriosus, PDA) are relatively recent. Prog...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2011.09.019
更新日期:2012-04-01 00:00:00
abstract::Adverse birth outcomes such as preterm birth, low-birth weight, and infant mortality continue to disproportionately affect black and poor infants in the United States. Improvements in healthcare quality and access have not eliminated these disparities. The objective of this review was to consider societal factors, inc...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2017.07.002
更新日期:2017-10-01 00:00:00
abstract::This article reviews the literature on infectious diseases as a cause of stillbirth. Identifying a specific infection as a cause of stillbirth is limited by many obstacles. Nevertheless, "good faith" efforts estimate that approximately 9% to 15% of stillbirths are caused by infections. Infection may be especially impo...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/sper.2002.29839
更新日期:2002-02-01 00:00:00
abstract::Extracorporeal membrane oxygenation (ECMO) is a highly technical and complex method of life support. Patient and circuit emergencies on ECMO are rare, but in these cases, prompt and correct actions to address the crisis are needed to prevent morbidity and mortality. ECMO simulation programs have gained popularity in r...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2016.08.002
更新日期:2016-11-01 00:00:00
abstract::Candida is a leading cause of late onset infection (> 3 days of age) in the premature infant. Therefore, decisions about the diagnosis and management of infections caused by Candida are commonplace in the neonatal intensive care unit. Despite this fact, there are few comparative trials about treatment of neonatal Cand...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1016/s0146-0005(03)00060-0
更新日期:2003-10-01 00:00:00
abstract::Advances in genetic engineering have allowed the creation of animals with additional or deleted genes. New genes may be inserted in mice, specific genes inactivated or "knocked out," and more complex animals created in which genes can be turned on or off at different times in development or in different tissues. These...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2006.09.001
更新日期:2006-12-01 00:00:00
abstract::The process of parturition is poorly understood, but the cervix clearly plays a key role. Because of this, recent research efforts have been directed at objective quantification of cervical remodeling. Investigation has focused on two basic areas: (1) quantification of tissue deformability and (2) presence, orientatio...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2017.08.006
更新日期:2017-12-01 00:00:00
abstract::There is increasing evidence that cardiac dysfunction is a key contributor to CDH pathophysiology. Dysfunction in both right and left ventricles is common in the early neonatal period, contributes to clinical disease severity, and is associated with adverse outcomes including death and ECMO use. Early and routine asse...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2019.07.007
更新日期:2020-02-01 00:00:00
abstract::Down syndrome (DS) screening has been an integral part of routine prenatal screening for the last three decades. Recent efforts have been directed at developing additional non-invasive prenatal screening techniques that could not only improve sensitivity of prenatal screening, but also be employed in the first trimest...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2005.05.003
更新日期:2005-08-01 00:00:00
abstract::The incidence of twins, triplets, and high-order multiples has increased dramatically in the last two decades secondary to greater reliance on fertility treatments and to delayed childbearing. Offspring of a multiple gestation are at increased risk for both chromosomal and structural abnormalities. Prenatal diagnosis ...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2005.08.005
更新日期:2005-10-01 00:00:00
abstract::Early pregnancy loss is the most common complication in pregnancy. Management options for miscarriage include expectant management, medical intervention, or surgical aspiration. Non-surgical and surgical management are all safe and acceptable options for medically uncomplicated patients. Patient and provider preferenc...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2018.12.005
更新日期:2019-03-01 00:00:00
abstract::The safety of cesarean section has improved dramatically over the past 50 years. During the past 20 years a greater awareness of and discussion about the symptomatic morbidity that can result for women following vaginal delivery has occurred and women's expectations for the outcome of pregnancy for them and their babi...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/sper.2003.50002
更新日期:2003-02-01 00:00:00
abstract::Ultrasound remains the modality of choice in imaging the fetus due to its availability, safety, and low cost. With advances in technology, however, magnetic resonance imaging (MRI) has become an important adjuvant in the evaluation of the fetus. MRI is not limited by fetal lie, oligohydramnios, overlying bone, or obes...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2013.06.005
更新日期:2013-10-01 00:00:00
abstract::Surviving extremely low-birth-weight infants are at risk of severe neurodevelopmental disability. Transfusion with packed red cells is almost universal in the care of these infants, but the hemoglobin threshold at which these transfusions should be given is unclear. Different clinical trials of restrictive (low hemogl...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2012.04.010
更新日期:2012-08-01 00:00:00
abstract::Doppler ultrasonography was introduced into clinical obstetric practice over 20 years ago. It is also accepted that a variety of common obstetrical complications such as preeclampsia and intrauterine growth restriction have their origin in abnormal development of the placental vasculature and this could be reflected i...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/sper.2001.22892
更新日期:2001-02-01 00:00:00
abstract::Newborn screening (NBS) reaches approximately all of the 4 million newborns in the United States each year and has been effective in significantly reducing the morbidity and mortality that results from certain congenital conditions. The comprehensive NBS system can be divided into preanalytic (education and screening)...
journal_title:Seminars in perinatology
pub_type: 杂志文章
doi:10.1053/j.semperi.2009.12.002
更新日期:2010-04-01 00:00:00
abstract::Long-term sequelae of preterm birth have been studied extensively up until the age of 5 to 8 years. However, the cognitive development of adolescents born preterm has received limited attention. The objective of this study is to determine school performance in adolescents born very preterm. We have followed up a cohor...
journal_title:Seminars in perinatology
pub_type: 杂志文章
doi:10.1053/j.semperi.2004.08.007
更新日期:2004-08-01 00:00:00
abstract::The renin angiotensin system (RAS) is now recognized as the body's most powerful hormone system for controlling renal hemodynamics and sodium excretion and, therefore, body fluid volumes and arterial pressure. The discovery of angiotensin converting enzyme inhibitors (ACEi) was a keystone for the understanding of the ...
journal_title:Seminars in perinatology
pub_type: 历史文章,杂志文章
doi:10.1016/s0146-0005(00)80046-4
更新日期:2000-02-01 00:00:00
abstract::In this review the factors present in human amniotic fluid that may function to inhibit bacterial growth have been examined. It appears that several potential antibacterial systems are present. Lysozyme and B-lysin may significantly contribute to the killing of gram-positive bacteria. Whether or not the remaining anti...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:
更新日期:1977-01-01 00:00:00
abstract::Up to the immediate past, and perhaps even to the present, a major difference between care of the fetus and of the neonate was the ability to examine directly the physical and biochemical traits of the unborn patient. In a span of time as short as perhaps 10 years it has become progressively possible to institute almo...
journal_title:Seminars in perinatology
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
abstract::Poor access to contraception can lead to several undesired health outcomes, including high rates of unintended pregnancy, high rates of teen pregnancy, spontaneous preterm delivery, preeclampsia and maternal death. Properly addressing these public health issues often require a coordinated response at the state governm...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1016/j.semperi.2020.151272
更新日期:2020-08-01 00:00:00
abstract::Sudden unexpected changes in the life of a family create many different emotions in various family members. The death of a young woman during or after her pregnancy is especially difficult because of the strain it places on family dynamics. One of the consequences is that there is, commonly, a newborn, and perhaps oth...
journal_title:Seminars in perinatology
pub_type: 杂志文章
doi:10.1053/j.semperi.2011.09.014
更新日期:2012-02-01 00:00:00
abstract::The intended and unintended effects of epidural labor analgesia are reviewed. Mothers randomized to epidural rather than parenteral opioid analgesia have better pain relief. Fetal oxygenation is not affected by analgesic method; however, neonates whose mothers received intravenous or intramuscular opioids rather than ...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/sper.2002.32201
更新日期:2002-04-01 00:00:00
abstract::The use of broad spectrum antimicrobials, the emergence of multiresistant organisms, and the hospital drug costs associated with antimicrobials have all driven the need for institutions to develop strategies to control the use of antimicrobials. Formulary restrictions, prior approval mechanisms, treatment guidelines, ...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/sper.2002.36271
更新日期:2002-10-01 00:00:00
abstract::Prostaglandins PGE2, PGD2, PGI2, and PGF2 alpha, as well as thromboxanes and leukotrienes, are synthesized by the fetal and neonatal kidney. The major prostaglandin, PGE2, PGD2, and PGI2, increase RBF, free water clearance, urine flow, and natriuresis. Alterations in the synthetic and catabolic activity of renal prost...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:
更新日期:1987-01-01 00:00:00
abstract::The placenta was classically considered a barrier, but in 1957 this notion was shattered. This organ is only a selective filter and metabolic site. In this review, the placental transfer of the top 17 substances of abuse are analyzed. In the National Library of Medicine only 41 papers that documented placental transfe...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1016/s0146-0005(96)80082-6
更新日期:1996-04-01 00:00:00
abstract::STDs can be one of the most common antepartum complications in high-risk gravidas. Screening for gonorrhea, syphilis, HPV, and possibly hepatitis B and chlamydial infection, should be considered in most, if not all, pregnant women. Familiarity with the common clinical presentations and treatment of bacterial STDs will...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:
更新日期:1990-04-01 00:00:00
abstract::The medical literature demonstrates that inadequate hospital protocols or the lack of consistent protocols for diagnosis, management, consultation, and/or referral can lead to confusion and unnecessary variation in patient care. Incongruities in clinical settings have been repeatedly shown to compromise quality of pat...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/j.semperi.2015.11.019
更新日期:2016-03-01 00:00:00
abstract::Inhaled nitric oxide (iNO), a selective pulmonary vasodilator, is available for treatment of persistent pulmonary hypertension of the newborn in term and near-term neonates. iNO decreases pulmonary vascular resistance leading to diminished extrapulmonary shunt and also has a microselective effect which improves ventil...
journal_title:Seminars in perinatology
pub_type: 杂志文章,评审
doi:10.1053/sper.2000.20085
更新日期:2000-12-01 00:00:00
abstract::Determining approach to delivery after a previous cesarean is among the most contentious areas of obstetrics. We present a framework for ethically responsible guidelines and practice regarding vaginal birth after cesarean. We describe ethical complexities of 3 key issues that mark the debate: the cesarean delivery rat...
journal_title:Seminars in perinatology
pub_type: 杂志文章
doi:10.1053/j.semperi.2010.05.007
更新日期:2010-10-01 00:00:00