According to a systematic review of existing studies, to appear in the May 4 issue of the Journal of the American Medical Association, the surgical procedure known as an episiotomy, performed in up to 35 percent of U.S. vaginal births, usually provides no benefits.
Moreover, the researchers found that, in some cases, routine use of episiotomy causes more harm to mothers than avoiding its use. An episiotomy is an incision made at the vaginal opening during a birth. The intent, in most cases, is to mitigate the severity of the spontaneous tearing that sometimes occurs during childbirth and to facilitate proper anatomic repair. The procedure also may be performed in cases when the baby’s safety is threatened and delivery needs to take place quickly. This study addressed routine use only, not emergencies.
In routine births, women without episiotomy were found to have less pain with faster resolution, and no greater or lesser risk of wound healing complications. In addition, the evidence showed that episiotomy did not protect women against urinary or fecal incontinence or pelvic organ prolapse in the first three months to five years following delivery.
Stephanie Crayton | EurekAlert!
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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...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
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17.01.2017 | Materials Sciences
17.01.2017 | Architecture and Construction