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Sökning: WFRF:(Källén Anna) > (2010-2013)

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1.
  • Greenlees, Ruth, et al. (författare)
  • Paper 6: EUROCAT Member Registries: Organization and Activities
  • 2011
  • Ingår i: Birth Defects Research Part C: Embryo Today: Reviews. - : Wiley. - 1542-975X. ; 91:Suppl. 1, s. 51-100
  • Forskningsöversikt (refereegranskat)abstract
    • BACKGROUND: EUROCAT is a network of population-based congenital anomaly registries providing standardized epidemiologic information on congenital anomalies in Europe. There are three types of EUROCAT membership: full, associate, or affiliate. Full member registries send individual records of all congenital anomalies covered by their region. Associate members transmit aggregate case counts for each EUROCAT anomaly subgroup by year and by type of birth. This article describes the organization and activities of each of the current 29 full member and 6 associate member registries of EUROCAT. METHODS: Each registry description provides information on the history and funding of the registry, population coverage including any changes in coverage over time, sources for ascertaining cases of congenital anomalies, and upper age limit for registering cases of congenital anomalies. It also details the legal requirements relating to termination of pregnancy for fetal anomalies, the definition of stillbirths and fetal deaths, and the prenatal screening policy within the registry. Information on availability of exposure information and denominators is provided. The registry description describes how each registry conforms to the laws and guidelines regarding ethics, consent, and confidentiality issues within their own jurisdiction. Finally, information on electronic and web-based data capture, recent registry activities, and publications relating to congenital anomalies, along with the contact details of the registry leader, are provided. CONCLUSIONS: The registry description gives a detailed account of the organizational and operational aspects of each registry and is an invaluable resource that aids interpretation and evaluation of registry prevalence data. Birth Defects Research (Part A) 91: S51-S100, 2011. (C) 2011 Wiley-Liss, Inc.
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2.
  • Hagman, Anna, et al. (författare)
  • Women who gave birth to girls with Turner syndrome: maternal and neonatal characteristics.
  • 2010
  • Ingår i: Human reproduction (Oxford, England). - : Oxford University Press (OUP). - 1460-2350 .- 0268-1161. ; 25:6, s. 1553-60
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: The aim was to identify maternal risk factors in women giving birth to girls with Turner syndrome (TS) and to describe the characteristics of newborns with TS. METHODS: The Swedish Genetic Turner Register was cross-linked with the Swedish Medical Birth Register. Between 1973 and 2005, 494 children with TS were born. Maternal age, parity, height, smoking habits and neonatal characteristics; mode of delivery, gestational age, size at birth and Apgar score, were compared with women in the general population who gave birth to girls during the same period. RESULTS: More women with advanced maternal age (40+) delivered girls with TS, 3.2% when compared with 1.8% in the general population [OR 1.83, 95% confidence interval (CI) 1.09-3.08, after adjustment for year of birth]. Maternal height was inversely associated with TS pregnancies (P = 0.005). Late preterm birth occurred in newborns with TS in 10.5% when compared with 4.8% in the general population (OR 2.23; 95% CI: 1.67-2.97, after adjustment for year of birth and maternal age). Newborns with TS had birthweight less than -2SD in 17.8% and birth length less than -2SD in 21.0% when compared with 3.5 and 3.4%, in the general population (OR 6.55; 95% CI: 5.12-8.38 and OR 8.69; 95% CI: 6.89-10.97, after adjustment for year of birth and maternal age). CONCLUSION: Advanced maternal age and short stature were risk factors for giving birth to a girl with TS. More TS girls were born late preterm and were smaller for gestational age than non-TS girls in the general population.
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4.
  • Finnström, Orvar, et al. (författare)
  • Maternal and child outcome after in-vitro fertilization-a review of 25 years population based data from Sweden.
  • 2011
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 90:5, s. 494-500
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. To summarize data on deliveries after IVF performed in Sweden up to 2006. Design. Cohort study of women and children, conceived after IVF with comparisons of deliveries after IVF before and after April 1, 2001. Setting. Study based on Swedish health registers. Population. Births registered in the Swedish Medical Birth Register with information on IVF from all IVF clinics in Sweden. Methods. Results from the second study period are summarized and outcomes between the two periods are compared. Long term follow-up is based on data from both periods. Main outcome measures. Maternal and perinatal outcomes, long term sequels. Results. Some maternal pregnancy complications decreased in rate, notably preeclampsia and PROM. The rate of multiple births and preterm births decreased dramatically with a better neonatal outcome, including neonatal mortality. No difference in outcome existed between IVF and ICSI or between the use of fresh and cryopreserved embryos, but children born after blastocyst transfer had a slightly higher risk for preterm birth and congenital malformations than children born after cleavage stage transfer. An increased risk for cerebral palsy, possibly for attention deficit and hyperactivity disorder, for impaired visual acuity, and for childhood cancer was noted but these outcomes were rare also after IVF. An increased risk for asthma was demonstrated. No effect on maternal cancer risk was seen. Conclusions. A marked decrease in multiple births was the main reason for better pregnancy and neonatal outcome and may also have a beneficial effect on long-term results, notably cerebral palsy.
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5.
  • Hagman, Anna, et al. (författare)
  • Morbidity and mortality after childbirth in women with Turner karyotype.
  • 2013
  • Ingår i: Human reproduction (Oxford, England). - : Oxford University Press (OUP). - 1460-2350 .- 0268-1161. ; 28:7, s. 1961-1973
  • Tidskriftsartikel (refereegranskat)abstract
    • STUDY QUESTION: Do women with Turner karyotype have increased mortality and morbidity in the years after childbirth? SUMMARY ANSWER: No mortality occurred during pregnancy and follow-up in women with Turner karyotype, but a higher rate of circulatory and endocrine diseases and a high risk of aortic aneurysm were confirmed. WHAT IS KNOWN ALREADY: Pregnancies in women with Turner karyotype are high-risk pregnancies with an increased risk of maternal mortality from aortic dissection and morbidity from hypertensive disorders. STUDY DESIGN, SIZE, DURATION: A retrospective Swedish population-based registry study of 124 women with Turner karyotype born between 1957 and 1987 and who gave birth between 1973 and 2010. Women with Turner karyotype without childbirth (n = 378) were selected as controls. A second control group consisted of women from the Swedish Medical Birth Register (MBR) (n = 1230) matched for maternal age, number of children and year of birth of the first child. PARTICIPANTS/MATERIALS, SETTING AND METHODS: Women with Turner karyotype were identified in the Swedish Genetic Turner Register. Data were obtained by using the unique personal identification number with cross linkage to the Swedish MBR, the Cause of Death Register, the National Patient Register and the Swedish Cancer Register. Hazard ratio (HR) with 95% confidence interval (CI) was used in the analysis of morbidity. MAIN RESULTS AND THE ROLE OF CHANCE: No mortality occurred in women with Turner karyotype and childbirth. Diseases of the circulatory system occurred more often in women with Turner syndrome under the age of 40 years compared with the MBR control group (HR 4.59; 95% CI 2.75-7.66) but was similar at or above the age of 40 years. Morbidity from circulatory diseases was increased before pregnancy (HR 3.83; 95% CI 1.02-14.43) and during pregnancy or within 1 year after (HR 5.78; 95% CI 1.94-17.24), but was similar after 1 or more years after delivery (HR 1.91; 95% CI 0.74-4.96). Aortic aneurysm occurred in 11/502 (2.2%) women with Turner karyotype and in three women (2.4%) during pregnancy. The long-term follow-up showed that aortic dissection was a common cause of death in young women with Turner karyotype without childbirth. A thorough cardiac evaluation before pregnancy in women with Turner karyotype is of utmost importance. LIMITATIONS, REASONS FOR CAUTION: Although this was a population-based registry study performed over a period of more than 20 years, a much longer follow-up and larger series are needed to assess rare events. The study also lacks information on phenotype and mode of conception in women with Turner karyotype. Women who gave birth probably represent a selection of healthier women with Turner karyotype. WIDER IMPLICATIONS OF THE FINDINGS: The high risk of aortic aneurysm in young women with Turner karyotype is in agreement with the literature. STUDY FUNDING/COMPETING INTEREST(S): No conflicts of interest exist. The study has been supported by grants from the Gothenburg Medical Society, the Medical Care executive Board of the Region Västra Götaland, grants from the ALF agreement at the Sahlgrenska University Hospital, the Hjalmar Svensson foundation, the Swedish Board of Health and Welfare, the Swedish Heart Lung Foundation and the Swedish Council for Working Life and Social Research. TRIAL REGISTRATION NUMBER: None.
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6.
  • Hagman, Anna, et al. (författare)
  • Obstetric Outcomes in Women with Turner Karyotype.
  • 2011
  • Ingår i: The Journal of clinical endocrinology and metabolism. - : The Endocrine Society. - 1945-7197 .- 0021-972X. ; 96:11, s. 3475-3482
  • Tidskriftsartikel (refereegranskat)abstract
    • Context: Women with Turner syndrome (TS) have high risk of cardiovascular complications and hypertensive disorders. Few studies have analyzed obstetric outcome in women with TS. Objective: This study compared obstetric outcome in women with TS karyotype with women in the general population. Design: The Swedish Genetic Turner Register was cross-linked with the Swedish Medical Birth Register between 1973 and 2007. Obstetric outcome in singletons was compared with a reference group of 56,000 women from the general population. Obstetric outcome in twins was described separately. Results: A total of 202 singletons and three sets of twins were born to 115 women with a TS karyotype that was unknown in 52% at time of pregnancy. At first delivery, TS women of singletons were older than controls (median 30 vs. 26 yr, P < 0.0001). Preeclampsia occurred in 6.3 vs. 3.0% (P = 0.07). Aortic dissection occurred in one woman. Compared with the general population, the gestational age was shorter in children born by TS women (-6.4 d, P = 0.0067), and median birth weight was lower (-208 g, P = 0.0012), but sd scores for weight and length at birth were similar. The cesarean section rate was 35.6% in TS women and 11.8% in controls (P < 0.0001). There was no difference in birth defects in children of TS women as compared with controls. Conclusions: Obstetric outcomes in women with a TS karyotype were mostly favorable. Singletons of TS women had shorter gestational age, but similar size at birth, adjusted for gestational age and sex. Birth defects did not differ between TS and controls.
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8.
  • Källén, Anna, 1973- (författare)
  • A Plea for Critique
  • 2012
  • Ingår i: Current Swedish Archaeology. - 1102-7355. ; 20, s. 61-66
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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9.
  • Källén, Anna, et al. (författare)
  • Making Cultural History : An Introduction
  • 2013
  • Ingår i: Making Cultural History. - Stockholm : Nordic Academic Press. - 9789187351198 ; , s. 7-14
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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10.
  • Källén, Bengt, et al. (författare)
  • Blastocyst versus cleavage stage transfer in in vitro fertilization: differences in neonatal outcome?
  • 2010
  • Ingår i: FERTILITY AND STERILITY. - : Elsevier Science B.V., Amsterdam.. - 0015-0282 .- 1556-5653. ; 94:5, s. 1680-1683
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To compare neonatal outcome of blastocyst and cleavage stage embryo transfers after IVF. Design: Register study. Setting: Births recorded in the Swedish Medical Birth Register after IVF performed, 2002-2006. Patient(s): Treatments reported from all Swedish IVF clinics. Intervention(s): None. Main Outcome Measure(s): Some neonatal characteristics were compared in 1,311 infants born after blastocyst-stage transfer and 12,562 infants born after cleavage-stage transfer. Comparisons were also made with all births, 2002-2007 (n = 598,687). Result(s): After adjusting for year of birth, maternal age, parity, smoking habits, and body mass index, the risk of preterm birth among singletons was significantly greater after blastocyst-stage transfer than after cleavage-stage transfer. The risk of congenital malformations was also significantly higher. When the analysis was restricted to clinics where blastocyst transfers were made, the risk estimates increased for preterm birth, low birth weight, low APGAR score, and respiratory diagnoses, but did not change for congenital malformations. Conclusion(s): The results indicate a small increase in risk associated with blastocyst transfer, perhaps owing to the longer period of in vitro culture. There is a possibility that this effect is due, at least in part, to a selection of women for blastocyst transfers. Further studies are needed either to verify or to refute the found associations.
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