Cath lab procedure could replace major heart surgery in some patients
The Hospital of the University of Pennsylvania (HUP) is participating in a nationwide clinical trial of a new valve repair device that could replace major heart surgery in some patients. A tiny clip – delivered by a catheter and deployed in the heart to repair a malfunctioning and leaking mitral valve – is building a favorable safety and feasibility profile as the EVEREST Phase I clinical trial nears completion.
Severe mitral valve regurgitation (MR) is a debilitating condition that causes shortness of breath, fatigue and palpitations. In the United States, about 250,000 people develop significant MR each year, with almost 50,000 requiring surgery. The clip is designed to secure the valves leaflets near the center of the valve so that blood leakage is minimized and the heart pumps more efficiently. This new device could decrease a patients hospital stay, result in fewer complications, provide a quicker recovery time, and significantly reduce health care costs. "In my most recently treated patient, we utilized two clips to reduce his MR from severe to mild. It has been six months since his procedure, and he has no symptoms whatsoever," says Howard C. Herrmann, MD, Director of Interventional Cardiology & the Cardiac Catheterization Laboratory at Penn, and principal investigator for HUPs component of the EVEREST Trial.
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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