Search Results
Results 301 - 350 of 1079
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Simmons Rebecca - - 2004
The proportion of multiple births has increased markedly since 1980 in England and Wales. A major contribution to this trend is thought to be the widespread introduction of assisted reproductive technologies. Despite a continuing (but slower) upward trend in twin maternities, analysis of recent data shows that the rate of ...
Wilson David R - - 2004
Apart from echolocation and the pursuit of prey by bats, the function of ultrasound in animal communication is poorly understood. This is mainly because of the broad range of responses that it can evoke and the widely varied contexts in which it is used (for example, in rodents of the ...
Kaufman M H - - 2004
Attention is drawn to the spontaneous incidence of twinning, both dizygotic and monozygotic in different mammalian species. Conjoined twinning, however, only arises when the twinning event occurs at about the primitive streak stage of development, at about 13-14 days after fertilisation in the human, and is exclusively associated with the ...
Marttila Riitta - - 2004
OBJECTIVE: The purpose of this study was to determine gestational age-specific incidence and risk factors of respiratory distress syndrome (RDS) in twins compared with singletons. STUDY DESIGN: An analysis of 850,406 singleton and 23,278 twin infants born alive in Finland between 1987 and 2000 was performed. A number of antenatal ...
Ruiz R Jeanne - - 2004
OBJECTIVE: To determine the sensitivity, specificity, and positive predictive value (PPV) of fetal fibronectin (fFN) and to determine its usefulness, in conjunction with selected other clinical assessment measures, in the prediction of preterm birth for women with twin gestations. DESIGN: A prospective, descriptive, longitudinal design. SETTING: An obstetrical high-risk clinic ...
Resch B - - 2004
OBJECTIVE: To identify risk factors for the development of cystic periventricular leucomalacia (PVL) in twin gestation. DESIGN: Retrospective case-control study. SETTING: Tertiary care university hospital, Department of Paediatrics, Division of Neonatology, Graz, Austria. PATIENTS: Preterm twin gestations with one sibling having developed cystic PVL, diagnosed by ultrasound scans, compared with ...
Imaizumi Yoko - - 2004
Stillbirth rates of triplet births in the whole of Japan were analyzed using vital statistics from 1975 to 1998. Stillbirths were registered at 12 weeks gestation or later. The stillbirth rate was significantly higher in like- than in unlike-sex triplets for 1975-1998. During the 23-year period the stillbirth rate decreased ...
Kelly-Vance Lisa - - 2004
The use of assisted reproductive technology is increasing rapidly. Research, although sparse, has resulted in inconsistent findings as to the developmental prognosis for infants conceived by assisted reproductive techniques such as in vitro fertilization and the use of fertility drugs. In the present study, the authors compared twins who were ...
Kuwata Tomoyuki - - 2004
The purpose of this study was to examine whether dichorionic twins conceived by assisted reproductive technology (ART; intracytoplasmic sperm injection [ICSI], in vitro fertilization [IVF], gamete-intrafallopian tube transfer [GIFT]) have a higher risk of birth defects compared to dichorionic twins conceived naturally. We reviewed the medical records of 406 mothers ...
Penava Debora - - 2004
OBJECTIVE: To assess the risk factors for preterm birth in twin pregnancies, particularly monochorionicity. METHODS: A cohort study of 767 sets of twins, each twin weighing more than 500 g, born between January 1, 1992, and December 31, 2001, at St. Joseph's Health Care in London, Ontario. Statistical analysis was ...
Salihu Hamisu M - - 2004
OBJECTIVE: We investigated the relationship between low maternal age and neonatal survival among extremely preterm twins. METHODS: This was a retrospective cohort study on live births of extremely preterm twins delivered to teenaged mothers (aged 15-19 years) in the United States within the period 1995 through 1998. Overall neonatal and ...
Obi-Osius N - - 2004
AIMS: To investigate whether twinning occurs more frequently in residents in the vicinity of a toxic waste incinerator (TWI). METHODS: Within a longitudinal environmental study that addressed child health second grade school children and their parents were recruited. The proportion of twinning in the TWI region was compared with two ...
Turkson P K - - 2004
Breeding records from 1997 to 2000 for West African Dwarf goats kept under an intensive management system on the National Breeding Station at Kintampo in Ghana were analysed for the effect on mortality of sex, season and type of birth, and birth weight. The pre-weaning and post-weaning mortalities were 10% ...
Kato Noriko - - 2004
The effect of assisted reproductive technology is more pronounced in unlike-sexed twins than in like-sexed. Trends in perinatal mortality of twins were compared between the two types of sex combination. Certificates for births (478,276 cases), stillbirths (50,542 cases), and early neonatal deaths (8747 cases) were the subjects of this analysis. ...
Ananth Cande V - - 2004
OBJECTIVE: We sought to evaluate the contributions of changes in birth registration, labor induction, and cesarean delivery on trends in twin neonatal mortality rates. STUDY DESIGN: We conducted a population-based, retrospective cohort study of twin live births, using linked birth-infant death data in the United States (1989-1999). Relative risks and ...
Griesinger Georg - - 2004
There is much variability and no consensus on the definition of the most relevant outcome parameter after assisted reproduction technology (ART). Descriptive reports, such as annual statistics from national registries on the success of ART programmes, should present treatment success in terms of live birth per ovarian stimulation started, as ...
Kristensen Sibylle - - 2004
There is little information on mortality among multiple gestations complicated by premature rupture of membranes (PROM). In this study, we estimated the occurrence of the components of early mortality (stillbirth, neonatal and infant mortality) among twin pregnancies using the generalised estimating equation framework to account for intra-cluster correlations. Using the ...
Kontopoulos E V - - 2004
OBJECTIVE: We examined whether the route of delivery for near-term (> or = 34 weeks' gestation) twins, as candidates for vaginal delivery, affected neonatal and infant mortality rates. We further evaluated whether these mortality rates were modified by fetal presentation. METHODS: A population-based retrospective cohort study based on the matched ...
Laugel V - - 2004
This study reports the first case of symptomatic placental transfer of cryoglobulins and discusses the potential pathogenic processes and the basic guidelines for neonatal management. A 32-y-old woman was affected by essential type I cryoglobulinaemia and displayed the cold-triggered cutaneous symptoms of the disease due to a monoclonal immunoglobulin G ...
Wen Shi Wu - - 2004
OBJECTIVE: To estimate the occurrence and to assess clinical predictors of emergent cesarean delivery in the second twin after vaginal delivery of the first twin. METHODS: We conducted a population-based cohort study, using the 1995-1997 linked mother/infant twin data from the United States. The adjusted risk ratios and population attributable ...
Chia K S - - 2004
INTRODUCTION: Twin studies are a most effective method to analyse gene and environment interactions. Using data from the Singapore National Registry of Births and Deaths (SNRBD), this paper describes the number of twin and multiple births among different ethnic populations in Singapore. MATERIALS AND METHODS: All births recorded in the ...
Yonezawa Katsuei - - 2004
Using the transition matrix of inbreeding and coancestry coefficients, the inbreeding (N(eI)), variance (N(eV)), and asymptotic (N(e lambda)) effective sizes of mixed sexual and asexual populations are formulated in terms of asexuality rate (delta), variance of asexual (C) and sexual (K) reproductive contributions of individuals, correlation between asexual and sexual ...
Schieve Laura A - - 2004
For assisted reproductive technology (ART) treatments, measures of success that move beyond traditional measures of pregnancy and live birth and narrow the numerator to infant outcomes with an optimal short- and long-term prognosis are needed. Hence, presentation of singleton live birth delivery rates is warranted. Twins have greatly increased risks ...
Wenzler David L - - 2004
PURPOSE: It has been speculated that late spontaneous testicular descent occurs in more than 70% of newborns with cryptorchidism. Based on this belief, the decision for orchiopexy is often deferred during infancy. We reviewed our 10-year experience of treating infants with cryptorchidism to document the rate of spontaneous testicular descent. ...
Pinborg Anja - - 2004
BACKGROUND: In Denmark, one-third of twin pregnancies are the result of IVF/ICSI treatment. Limited data on neonatal outcome in IVF/ICSI twins are available in the literature. METHODS: A register study was conducted on neonatal morbidity and mortality in a complete national twin cohort including all 3438 (3393 live-born) IVF/ICSI and ...
Marcus-Soekarman D - - 2004
We report on monozygotic (MZ) twins with a de novo mos 46,XX,der(15)t(11;15)(p12;p11.2)/46,XX karyotype varying in different tissues. The clinical presentation and findings at the cytogenetic level are described. One of the infants had definite minor anomalies at birth, also found in other cases of trisomy of 11p resembling the Beckwith-Wiedemann ...
Horstmann Olaf - - 2004
OBJECTIVES: Delayed gastric emptying (DGE) has been specifically attributed to pylorus-preserving pancreaticoduodenectomy (PPPD). As PPPD has been shown to be comparable with the classic Kausch-Whipple pancreaticoduodenectomy (KWPD) in terms of oncological radicality, DGE has advanced to be the leading argument for hemigastrectomy in PD. METHODS: A prospective, nonrandomized comparison of ...
Kalish Robin B - - 2004
Our objective was to determine the association of the ponderal index with birth weight discordance in triplets. We analyzed data from triplets delivered at 28-37 weeks for birth weight discordance (>25% difference between the heaviest and lightest triplet). Three categories of discordance (low skew, symmetrical, and high skew) were classified ...
Amaru Rebecca C - - 2004
OBJECTIVE: To estimate whether discordant growth is associated with adverse perinatal outcomes in twins after adjusting for growth restriction. METHODS: This was a retrospective, hospital-based cohort study of twin gestations with 2 live births delivered at 24 weeks or later from 1992 to 2001. Twin gestations were classified as small ...
Blickstein Isaac - - 2004
OBJECTIVE: The purpose of this study was to evaluate neonatal mortality rates among discordant twins, classified according to the birth weight of the smaller twin. STUDY DESIGN: We compared neonatal mortality rates among three groups of discordant twins (>25%), distinguished by the birth weight of the smaller twin being <10th, ...
Becroft David M O - - 2004
The incidences, cooccurrences and epidemiological associations at term of the three common focal macroscopic placental lesions, infarcts, intervillous fibrin plaques (IVFP), and intervillous thrombi (IVT) were investigated as part of a population-based case-control study of small-for-gestational age (SGA) infants. Five hundred and nine placentas from women delivering SGA infants (10th ...
Adegbite Adedayo L - - 2004
OBJECTIVE: The purpose of this study was to determine the incidence of neurologic morbidity in preterm monochorionic (MC) and dichorionic (DC) twins. STUDY DESIGN: We collected perinatal, neonatal, and infant follow-up data of 76 MC and 78 DC twins born between 24 and 34 weeks of gestation (295 infants). Risks ...
Sheay Wendy - - 2004
OBJECTIVE: To evaluate the prevailing mortality paradox that second-born twins are at higher risk of perinatal mortality than first-born twins. METHODS: We used the 1995-1997 United States "matched multiple birth" data files assembled by the National Center for Health Statistics, for analysis of risk of perinatal mortality in first- and ...
Nassar Anwar H - - 2004
The aim of our study was to compare the neonatal outcome of vaginally delivered breech-presenting twins (VD) to those delivered by cesarean (CS). Maternal and neonatal charts of all live, non-anomalous twins delivered at > or =25 weeks of gestation, in a single tertiary care center, over an 11-year period ...
Pollak Edward - - 2004
A population, reproducing wholly by selfing, is assumed to be observed at times 0,1,.... Individuals between x-1 and x units of age at time t are said to be in age class x at that time. The rate of increase in the long run of individuals of type A(iA)(j) is ...
Eskola Vesa - - 2003
OBJECTIVE: To evaluate the differences in adrenal function between very low birth weight (VLBW) infants from singleton and multiple pregnancies. DESIGN AND METHODS: Forty infants of birth weights less than 1500 g underwent an ACTH test. Thirty infants born from singleton pregnancies (singleton group) and ten born from multiple pregnancies ...
Koivurova S - - 2003
BACKGROUND: To examine the long-term child outcome after IVF until the age of 3 years in Northern Finland, we conducted a population-based cohort study. METHODS: First, a cohort of 299 IVF children born in 1990-1995 was compared with a cohort of 558 controls representing the general population in terms of ...
Ooki Syuichi - - 2003
BACKGROUND: Numerous birth weight standards for twins have been reported in western countries, whereas little is in Japan. The aim of this study is to present birth weight, birth length, chest circumference, and head circumference references, clarifying features related to these body size parameters, and to compare our birth weight ...
Giménez-Scherer Juan Antonio - - 2003
Because of the uncertainty concerning the origin of the malformations in the acardiac twin, its structure was studied to see if the malformations were random or with a pattern related to the twinning process. Included were 18 cases of dysmorphic twins in which an autopsy demonstrated a rudimentary or absent ...
Suzuki Shunji - - 2003
We evaluated the possible role of increased adenosine in the regulation of uteroplacental circulation during nonpreeclamptic twin gestations. We performed uterine artery Doppler velocimetry and maternal arterial blood sampling for measurement of plasma adenosine levels in 16 women with singleton gestation and 14 women with dichorionic twin gestation without preeclampsia ...
Cordero Leandro - - 2003
OBJECTIVE: To determine retrospectively mean arterial pressure (MAP) for stable and unstable concordant and discordant very low birth weight (VLBW: 801 to 1500 g) twins during the first 24 hours of life. BACKGROUND: Morbidity and mortality are much higher for extremely low birth weight (ELBW < or =800 g) than ...
Vintzileos Anthony M - - 2003
OBJECTIVE: The purpose of this study was to determine the association between prenatal care and preterm births among twin gestations in the presence and absence of high-risk pregnancy conditions. STUDY DESIGN: Twin birth data in the United States were used to determine the association between preterm birth and prenatal care ...
Nowak Ewa - - 2003
This review addresses questions related to medicosocial concerns surrounding the care of women with multiple births and their infants. Relevant articles and texts on twin and triplet pregnancies were reviewed. Population-based data were selected for inclusion whenever possible. Relevant tables were simplified from original sources. The review clarifies obstetric and ...
Laudy J A M - - 2003
OBJECTIVES: A retrospective analysis of the prognostic significance of the lung-to-head ratio (LHR) and other prenatal parameters on the outcome of fetuses with left-sided congenital diaphragmatic hernia (CDH). METHODS: A total of 26 fetuses with isolated left CDH without chromosomal abnormalities were included. Twenty-one LHR measurements could retrospectively be calculated ...
El Ayoubi Mayass - - 2003
BACKGROUND: Neonatal branching echogenic streaks in the basal ganglia or 'lenticulostriate vasculopathy' (LSV) has no clear comprehensive aetiology. OBJECTIVE: To provide some clinical evidence, possibly relevant to aetiology, by analysis of a large series. MATERIALS AND METHODS: Seventy cases (9 deaths, 3 post mortem) identified between 1981 and 2000 out ...
Goetghebuer Tessa - - 2003
Twins are prone to developmental delay due to prematurity and low birthweight. However it is unknown if twinning is an independent risk factor for developmental delay. The objective of this study was to compare the attainment of a set of gross motor milestones in a cohort of twins and singletons ...
Watanatittan Sukawat - - 2003
Eleven pairs of symmetrically conjoined twins underwent surgical separation at the Queen Sirikit National Institute of Child Health. Six were omphalopagus, 4 were thoracopagus and 1 was pygopagus. Eight were female and 3 were male. Three pairs were separated on emergency or semi-emergency bases, and the remaining 8 pairs were ...
IJzerman Richard G - - 2003
BACKGROUND: Low birth weight may be associated with high blood pressure in later life through genetic factors, an association that may be explained by alterations in sympathetic and parasympathetic activity. We examined the association of birth weight with cardiac pre-ejection period and respiratory sinus arrhythmia (indicators of cardiac sympathetic and ...
Barr Sybil - - 2003
OBJECTIVE: A significant increase in the triplet birth rate has occurred recently. This rise is of concern, as these infants are historically reported to be at risk of adverse outcome. Thus, we examined the outcome of triplet births in a large contemporary case series. STUDY DESIGN: Since 1993, detailed clinical ...
Chan Pei-Chun - - 2003
Klippel-Feil syndrome (KFS) is a heterogeneous entity, characterized by specific congenital anomalies of segmentation of the cervical spine. We report a case of KFS plus atretic meningocele in one identical twin and anencephaly in the other. These identical twins were both male with no chromosome defect. One of them had ...
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