Search Results
Results 301 - 350 of 1917
< 2 3 4 5 6 7 8 9 10 11 12 >
Sepulveda Waldo - - 2007
OBJECTIVE: In order to assess the outcome of pregnancies complicated by severe second trimester twin-twin transfusion syndrome (TTTS) undergoing treatment with endoscopic laser surgery, we reviewed our experience following the implementation of an institutional fetal surgery program. METHODS: Patients presenting with monochorionic-diamniotic twin pregnancies complicated by severe TTTS before 26 ...
Bahtiyar Mert Ozan - - 2007
OBJECTIVE: Congenital heart defects (CHDs) affect approximately 0.5% of all neonates. Recent literature points to a possible increase in the CHD prevalence among monochorionic/diamniotic (MC/DA) twin gestations. We hypothesized that MC/DA twin pregnancy is a risk factor for CHD. METHODS: A systematic review of all published English literature was conducted ...
Hanley L Corey - - 2007
Acardiac anomaly sequence is a rare malformation cluster occurring in the setting of monozygotic monochorionic twin pregnancies. In addition to an absent heart (acardia), variable degrees of somatic developmental disruption are present. We describe an extreme example of what we believe to be acardiac twinning, with almost complete absence of ...
Yaqoob Jamal - - 2007
Acardiac twinning is a severe and rare complication of monochorionic placentation. The acardiac twin does not survive while mortality of the normal twin is about 50-70% as the normal twin has to provide circulation not only for itself but also for acardiac twin. Proper timing of the delivery is of ...
Erez Offer - - 2008
OBJECTIVE: To determine the prevalence of pregnancy complications among primiparous patients with twin gestation in our population and to investigate the association between the increased rates of assisted reproduction (ART) in twin gestation and preterm birth (PTD). MATERIAL AND METHODS: A retrospective population based cohort study was designed, including all ...
Belogolovkin Victoria - - 2007
This study evaluated the effect of multifetal pregnancy reduction on the incidence of small for gestational age (SGA) and discordance in reduced versus nonreduced twins and differences in placental pathology. A computerized ultrasound database was used to identify diamniotic-dichorionic twins who delivered at our institution. Reduced (n = 36) versus ...
Shebl Omar - - 2008
OBJECTIVE: To compare the outcome of singleton pregnancies originating from a twin gestation with singleton pregnancies originating from a single gestation. DESIGN: Case-control study. SETTING: Women's general hospital in Austria. PATIENT(S): A total of 794 singleton deliveries after IVF/intracytoplasmic sperm injection, including 46 survivors of vanishing twin syndrome (study group) ...
Miura Naomi - - 2008
Usually, fetal asphyxia/demise because of umbilical cord entanglement and secondary cord occlusion is a unique characteristic of monoamniotic twin pregnancies. We present here a rare case of fetal asphyxia due to cord entanglement in a monochorionic diamniotic twin pregnancy complicated by 2nd-trimester single intrauterine demise. In this case, there was ...
Livingston Jeffrey C - - 2007
OBJECTIVE: The objective of the study was to review perinatal outcomes in pregnancies treated with intrafetal radiofrequency ablation (RFA) for twin reversed arterial perfusion (TRAP) sequence. STUDY DESIGN: Perinatal outcome data from a quaternary care referral center were abstracted from a chart review of pregnancies with TRAP sequence treated in ...
El Kateb A - - 2007
OBJECTIVE: To refine the incidence of abnormal first-trimester ultrasound measurements and their correlation with the outcome of monochorionic diamniotic pregnancies. METHODS: First-trimester crown-rump length (CRL) and nuchal translucency thickness (NT) measurements were studied in three subgroups of a total of 200 monochorionic twin gestations referred to our center between June ...
Quintero Rubén A - - 2007
OBJECTIVE: We have previously described the selective laser photocoagulation of communicating vessels (SLPCV) technique for the treatment of twin-twin transfusion syndrome (TTTS). Because TTTS is thought to result from a net transfer of blood from the donor twin to the recipient twin, we hypothesized that lasering the arteriovenous anastomoses from ...
Becker Sven - - 2007
BACKGROUND: Clinically relevant acute twin-twin transfusion syndrome (TTTS) is a rare and poorly defined placental pathology because the definitions of chronic TTTS do not apply. Antepartum cases of acute TTTS are infrequently described in the literature despite the presence of vascular anastomoses in most monochorionic placentas. CASE: A case of ...
Opara E I - - 2007
The objective of this study was to evaluate the use of the term 'parity' in multiple pregnancies using a questionnaire survey. One hundred and fifty obstetricians and midwives in five maternity units in southeast Thames region of the London deanery were administered the questionnaire. One hundred and twenty-six questionnaires were ...
Tai Judy - - 2007
OBJECTIVE: The purpose of this study was to evaluate the association between the crown-rump length (CRL) difference in twin gestations and adverse pregnancy outcome. STUDY DESIGN: Women with a first trimester ultrasound scan of a twin pregnancy who delivered between June 2000 and March 2006 at Northwestern Memorial Hospital were ...
Kariappa T M - - 2007
Acardiac twinning is a rare anomaly .75% of cases occurring in monzygotic triplet pregnancies and the rest in monozygotic twins. We report an antenatally undiagnosed case of acardius amorphous. The condition results from abnormal placental vascular anastomoses termed as twin reversed arterial perfusion (TRAP) theory. Early sonographic prenatal diagnosis improves ...
Banks Claire L - - 2008
OBJECTIVE: Birthweight discordance amongst twins is associated with an increase in perinatal morbidity and mortality. Clinical decisions regarding the management of twins are often made on the basis of estimated fetal weight in the third trimester. This study assesses the efficacy of routine third trimester ultrasound fetal biometry, third trimester ...
Kuusisto H - - 2008
OBJECTIVE: To investigate the possible association of human herpes virus 6- (HHV6) infection and multiple sclerosis (MS). BACKGROUND: Despite intensive investigations of genetic and environmental factors, the etiopathogenesis of MS remains unknown. HHV6 is a possible candidate in that it is neurotropic, able to induce demyelination and become latent and ...
Shiba Masahiro - - 2008
AIMS: To examine whether the heart rate dynamics of a monochorionic diamniotic (MD) twin fetus is different from a dichorionic diamniotic (DD) twin fetus by nonlinear methods of time series analysis. METHODS: 32 fetal heart rate (FHR) recordings from healthy MD twin fetuses and 58 recordings from healthy DD twin ...
Diehl W - - 2007
The twin reverse arterial perfusion (TRAP) sequence is a serious complication of monochorionic multiple pregnancies in which the affected twin is reversely perfused from the healthy co-twin, resulting in severely abnormal or absent cardiac development, severe malformations, and massive hydrops fetalis. The acardiac twin threatens the survival of the pump ...
Peng Hsiu-Huei - - 2007
BACKGROUND: Discordance of fetal genotype or phenotype in a monozygotic twin pregnancy is rare. CASE: In case 1, a 28-year-old woman at 15 weeks' gestation was found to have a dichorionic twin pregnancy with 1 fetus affected with hydrop fetalis. The result of chromosomal study showed that the structurally normal ...
Thelmo Mary Lou C - - 2007
Twin reversed-arterial-perfusion syndrome (TRAPS) is a rare complication of monochorionic twin pregnancies. TRAPS is characterized by the hemodynamic dependence of a "recipient" twin from a "pump" twin. The "recipient" twin exhibits lethal abnormalities, such as acardia and acephaly. Circulatory failure of the normal twin derives from the existence of arterio-arterial ...
Lee Keun-Young - - 2007
The outcome of vaginal radical trachelectomy (VRT) for the management of early cervical cancer is comparable to that achieved with radical hysterectomy. Although VRT preserves the potential for pregnancy, the outcome of twin pregnancies following VRT is poor. We report a successful twin pregnancy after VRT using transabdominal cervicoisthmic cerclage.
Wong H F - - 2007
A 33-year-old woman was diagnosed at 15 weeks gestation with a twin pregnancy complicated by an acardiac acephalic foetus. The patient opted for expectant management with close foetal surveillance. Serial ultrasonography showed polyhydramnios at 22 weeks gestation. However, subsequent scans over the next two weeks showed cessation of blood flow ...
Højgaard Astrid - - 2007
BACKGROUND: The present trend towards selective single embryo transfer (SET) calls for evaluation of patient attitudes towards twins and how the patients balance advantages and disadvantages of one or two embryos in IVF/ICSI treatment. METHODS: The study was conducted in a Danish public fertility clinic, where the common practice was ...
Russell Zoi - - 2007
Intrauterine growth restriction (IUGR) occurs in approximately 3-10% of singleton pregnancies, in 9.1% of all twins, and in 9.9% of monochorionic twins. Spontaneous demise of the IUGR twin may occur and may result in concomitant demise or severe neurological handicap of the other twin. Currently, monochorionic twins with selective IUGR ...
Delbaere I - - 2007
BACKGROUND: The objective of this study is to analyse differences in cord characteristics between naturally conceived twins and twins born after assisted reproduction. METHODS: Between 1985 and 2004, the East Flanders Prospective Twin Survey (EFPTS) registered 4159 twin pairs. We compared cord characteristics between 2119 naturally conceived dizygotic (DZ) twin ...
Echternkamp S E - - 2007
The effects of increasing fetal numbers and their distribution between the left and right uterine horns on calf survival, calf BW at birth and weaning, gestation length, dystocia, and calf sex ratio were evaluated for single (n = 1,587), twin (n = 2,440), and triplet calves (n = 147) born ...
Ombelet Willem - - 2007
The proportion of twins resulting from multifetal pregnancy reduction of higher-order multiples is increased in pregnancies resulting from hormone stimulation when compared with twins following in vitro fertilization/intracytoplasmic sperm injection treatment. These reduced twin pregnancies may carry a higher perinatal risk compared with other twin pregnancies, which should be taken ...
Morales-Suárez-Varela Maria M - - 2007
Twinning rates have changed substantially over time for reasons that are only partly known. In this study we studied smoking, coffee and alcohol intake, and their possible interaction with obesity as potential determinants of twinning rates using data from the Danish National Birth Cohort between 1996 and 2002. We identified ...
Imaizumi Yoko - - 2007
Frequencies of recurrent multiple maternities were estimated using two sets of census data in Japan in 1990 and 1995. The repeat frequency (RF) of the twinning rate is the frequency of 2 sets of twins among families or couples who have already had 1 set of twins and 2 more ...
Segal Nancy L - - 2007
Some legal and social complications that arise when identical twins have children are examined. The specific case presented concerns assignment of paternity. This section is followed by a review of recent studies of multiple birth pregnancy risk factors, namely mother to infant HIV transmission and congenital hypothyroidism. Honors given to ...
Sekulić Slobodan R - - 2007
The aim was to study the effect of twin gestations in a uterus with 2 bodies on the probability of breech presentation at delivery. The hypothesis was that the probability of breech presentation was not higher than 50%. A review was undertaken of MEDLINE (1966-2004) and of the article reference ...
Islam Talat - - 2007
OBJECTIVE: To address the role of childhood sun exposure on the risk of multiple sclerosis (MS) after controlling for genetic susceptibility, we investigated the association between sun exposure and MS comparing disease-discordant monozygotic (MZ) twins. METHOD: Twins with MS were sought by yearly newspaper advertisements throughout North America from 1980 ...
Celi P - - 2007
The aim of this study was to determine whether the number of animals used in experiments examining reproductive variables could be reduced without loss of statistical efficiency by using monozygotic twin (MT) sheep. In a series of four experiments, we measured the reproductive responses to changes in nutritional, opioidergic, and ...
Gratacós E - - 2007
OBJECTIVES: To evaluate a classification of selective intrauterine growth restriction (sIUGR) in monochorionic (MC) twins based on the characteristics of umbilical artery (UA) Doppler flow in the smaller twin, in terms of association with clinical outcome and with the pattern of placental anastomoses. METHODS: One hundred and thirty-four MC twins ...
Fernández-Martínez F J - - 2007
OBJECTIVE: To establish the utility of quantitative fluorescent polymerase chain reaction (QF-PCR) in order to determine the zygosity of multiple pregnancies, as well as to define the origin of the most frequent aneuploidies in amniotic fluid samples. METHODS: We describe the case of a monochorionic (MC) diamniotic (DA) pregnancy with ...
Sueters, Marieke
The incidence of spontaneous twinning in the Netherlands is approximately 1%, of which are 70% dizygotic and 30% monozygotic twins. Dizygotic twinning occurs after fertilization of two eggs (non-identical twins). Dizygotic twins almost invariably have two separate placentas (dichorionic) and two separate amnions (diamniotic). Monozygotic twinning occurs after fertilization of ...
Ierullo A M - - 2007
OBJECTIVE: To assess the safety and efficacy of a modified fetoscopic laser ablation technique for the management of severe twin-twin transfusion syndrome (TTTS) in a large series of pregnancies. DESIGN: Prospective cohort study. SETTING: Tertiary referral fetal medicine unit. POPULATION: Women with pregnancies complicated by severe TTTS (Quintero stage III ...
Bjelic-Radisic Vesna - - 2007
Our objective was to examine the neonatal outcome of second twins depending on presentation and mode of delivery. Using a database we analyzed the short-term neonatal outcome in twin pregnancies offered a trial of labor with special emphasis on the second twin depending on presentation and mode of delivery. Neonatal ...
Magann Everett F - - 2007
OBJECTIVE: To determine ultrasonic estimations of amniotic fluid in diamniotic twins across gestation using the single deepest pocket (SDP) technique and correlate volumes to intrapartum and neonatal outcomes. STUDY DESIGN: Prospective observational study using diamniotic dichorionic and diamniotic monochorionic pregnancies. Intrapartum and neonatal outcomes were evaluated. RESULTS: Between April 2004 ...
Walker Susan P - - 2007
The twin-to-twin transfusion syndrome (TTTS) continues to pose a major challenge in the area of fetal therapy. Untreated, the mortality and morbidity are extremely high, and the fact that there are two structurally normal fetuses at risk makes the case for effective in utero therapy even more compelling. Advances in ...
Atabek Mehmet Emre - - 2007
46,XX maleness is a rare abnormality of gonadal differentiation. We present dizygotic twins, one having ambiguous genitalia due to 2-hydroxylase deficiency, and the other having normal male genitalia with 46,XX maleness. One of the twins was referred to the endocrinology unit at 2 days old because of ambiguous genitalia. The ...
Wirdefeldt Karin K Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. - - 2008
This report describes the ascertainment of Parkinson disease (PD) in all individuals aged 50 years or older (49,814 individuals) from the Swedish Twin Registry. In phase one of the study, all twins were screened for PD using telephone interviews, with a response rate of 72.7%. In phase two, twins with ...
Sydsjö Gunilla - - 2008
OBJECTIVE: To analyze relationship and parenthood in IVF twin couples, IVF singleton couples, and spontaneously pregnant primiparous couples. SETTING: Southeast region of Sweden. DESIGN: Prospective case-control study. PATIENT(S): In total, 24 women and men who became pregnant with twins, consecutively, and expected their first child in 1997-98 were studied. A ...
Scavalli Claudia Palladino Sili - - 2007
OBJECTIVE: We investigated whether twin pregnancies were at increased risk of mother-to-child HIV-1 transmission (MTCT), in comparison with singletons. METHODS: Among HIV-1 infected women enrolled in the French Perinatal HIV Cohort (n = 9262), we studied the association between twin deliveries and MTCT rate according to three time periods (pre-1994, ...
Suzuki Shunji - - 2007
The aim of this study is to investigate maternal and neonatal outcomes in dichorionic twins to nulliparous women older than 35 compared to those of their younger counterparts. This was a retrospective study of dichorionic twin pregnancies managed at Japanese Red Cross Katsushika Maternity Hospital between 2002 and 2006. Nulliparous ...
Sperling L - - 2007
OBJECTIVE: To evaluate the outcome of screening for structural malformations in twins and the outcome of screening for twin-twin transfusion syndrome (TTTS) among monochorionic twins through a number of ultrasound scans from 12 weeks' gestation. METHODS: Enrolled into this prospective multicenter observational study were women with twin pregnancies diagnosed before ...
Jayadeva - - 2007
We propose Twin SVM, a binary SVM classifier that determines two nonparallel planes by solving two related SVM-type problems, each of which is smaller than in a conventional SVM. The Twin SVM formulation is in the spirit of proximal SVMs via generalized eigenvalues. On several benchmark data sets, Twin SVM ...
Lee Hanmin - - 2007
OBJECTIVE: We report our experience in the treatment of patients with twin-reversed arterial perfusion (TRAP) sequence using radiofrequency ablation to stop perfusion to the acardiac twin and protect the pump twin. STUDY DESIGN: An IRB approved retrospective review of all patients (n = 29) who underwent percutaneous radiofrequency ablation of ...
Kagan K O - - 2007
OBJECTIVE: To examine in monochorionic pregnancies the possible value of intertwin discordance in nuchal translucency (NT) thickness in the prediction of early fetal death or severe twin-twin transfusion syndrome (TTTS). METHODS: In 512 monochorionic twin pregnancies NT was measured at 11 to 13 + 6 weeks' gestation and regression analysis ...
< 2 3 4 5 6 7 8 9 10 11 12 >