Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

'Umbrella' valve provides a potential alternative to lung surgery

24.10.2006
New noninvasive IBV™ Valve found safe and effective for COPD patients

A new umbrella-like valve may help patients with emphysema breathe easier and may ultimately provide a noninvasive alternative to lung reduction surgery. In a new study presented at CHEST 2006, the 72nd annual international scientific assembly of the American College of Chest Physicians (ACCP), the IBVTM Valve, a nonsurgical, investigational device, was shown to be safe and effective for patients with emphysema.

Emphysema -- a subtype of chronic obstructive pulmonary disease (COPD) -- is a progressive and debilitating lung disorder, characterized by irreversible airflow obstruction. Current management for emphysema includes medication and/or supplemental oxygen, pulmonary rehabilitation, and, in rare cases, lung volume reduction surgery (LVRS) to remove the most diseased portions of the lung.

"The IBVTM Valve is similar in concept to LVRS in that it aims to make the lungs work more efficiently, thereby decreasing shortness of breath," said the study's lead author Daniel H. Sterman, MD, FCCP, University of Pennsylvania Medical Center, Philadelphia, PA. "Unlike lung reduction surgery, valve treatment has fewer complications and a shorter hospital stay. For example, most valve-treated patients have a one-night observational hospital stay while surgical patients average a week or more in the hospital." The one-way IBVTM Valve limits ventilation in diseased areas of the lungs and redirects ventilation to the remaining healthier portions of the lung while allowing for normal clearance of secretions.

In a multicenter preliminary pilot study, Dr. Sterman and researchers from the Cleveland Clinic Foundation, Cleveland, OH, University of Washington, Seattle, WA, and six additional US medical centers examined the safety and effectiveness of the IBVTM Valve on patients with severe upper-lobe emphysema. Over a 27-month period, 520 valves were implanted in 75 patients across the nine medical centers. The valves were implanted in the upper lobes of the lung using flexible bronchoscopy, with an average of 6 to 7 valves implanted per patient. Researchers used quantitative software and multidetector CT scans to measure the physical effects of the valves and the St. George Respiratory Questionnaire (SGRQ) to assess how patients felt after treatment.

Of the patients who received valve treatment, 46 patients (group A) had reduced complications and retained efficacy compared with the remaining patients (group B). In responding patients, valve treatment transferred an average of 20 percent ventilation and perfusion to healthier regions of the lung. Two thirds of patients in group A also had a 4-point or more SGRQ improvement at 6 months and showed significant improvements in oxygen use and DLCO. Compared with patients in group B, patients in group A were less than 75 years old, did not have lingular treatment, and had fewer lung segments treated. The 90-day serious complications were one bronchospasm and one COPD flare in the A group and two bronchospasm and one death with pneumothorax in group B.

"Patients responding to valve treatment may now be able to do simple, everyday activities, such as bathe or shower independently, walk around the house without stopping, talk without trouble breathing, and can go out for shopping or entertainment," said study coauthor Atul C. Mehta, MD, FCCP, Cleveland Clinic Foundation. "Although valve treatment is still investigational, it may offer an alternative treatment for patients with emphysema who are not good candidates for LVRS." Researchers stress that valve treatment is not yet approved by the US Food and Drug Administration and is only available as part of a research trial that is currently sponsored by the developer of the IBVTM Valve, Spiration, Inc.

"Although there is no cure for emphysema, proper treatment can improve a patient's exercise capacity, overall quality of life, and may result in longer survival," said Mark J. Rosen, MD, FCCP, President of the American College of Chest Physicians. "Valve treatment may represent a valuable option for the palliative treatment of patients with emphysema."

Jennifer Stawarz | EurekAlert!
Further information:
http://www.chestnet.org

More articles from Health and Medicine:

nachricht New study points the way to therapy for rare cancer that targets the young
22.11.2017 | Rockefeller University

nachricht Penn study identifies new malaria parasites in wild bonobos
21.11.2017 | University of Pennsylvania School of Medicine

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Corporate coworking as a driver of innovation

22.11.2017 | Business and Finance

PPPL scientists deliver new high-resolution diagnostic to national laser facility

22.11.2017 | Physics and Astronomy

Quantum optics allows us to abandon expensive lasers in spectroscopy

22.11.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>