Nearly as many women who received only one embryo at a time gave birth as women who received two embryos. At the same time the risk of giving birth to twins is minimized. These are the findings of a major study from the Sahlgrenska Academy, at Göteborg University in Sweden.
In-vitro fertilization, IVF, is a successful method to help childless couples to become parents. To maximize the chance of pregnancy, physicians have generally reintroduced more than one embryo. This has led to a considerably larger proportion of multiple births compared with spontaneous pregnancies. Multiple birth means two or more children in the same pregnancy, most often twins. Expecting more than one child entails greater risk. These children are often born prematurely and often have low birth weight. To reduce the number of pregnancies with more than one child, the Swedish National Board of Health and Welfare recommends that only one embryo be transferred at a time.
In the worlds largest controlled study, scientists at the Sahgrenska Academy in Gothenburg have compared deliveries in two groups of women who underwent IVF. Half of the women first had one embryo transferred. If it did not develop, they received a second embryo that had been kept frozen until it was reintroduced. The other half of the women received two embryos from the beginning. The study comprised 661 women under the age of 36 from 11 clinics in Scandinavia.
Ulrika Lundin | alfa
On track to heal leukaemia
18.01.2017 | Universitätsspital Bern
Penn vet research identifies new target for taming Ebola
12.01.2017 | University of Pennsylvania
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
18.01.2017 | Power and Electrical Engineering
18.01.2017 | Materials Sciences
18.01.2017 | Life Sciences