Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Therapy of wounds with water-filtered infrared-A (wIRA)

06.03.2008
Water-filtered infrared-A (wIRA) as a special form of heat radiation can advance wound healing or improve an impaired wound healing process both in acute and in chronic wounds and can especially enable wound healing in non-healing chronic wounds.

wIRA can considerably alleviate the pain and diminish an elevated wound exudation and inflammation and can show positive immunomodulatory effects. wIRA increases temperature, oxygen partial pressure, and perfusion in the tissue.

In three reviews in the medical e-Journal "GMS Krankenhaushygiene Interdisziplinär" within "German Medical Science" of the Association of the Scientific Medical Societies in Germany (AWMF) working mechanisms of wIRA and results of 6 scientific studies with wIRA are discussed.

The experience of the pleasant heat of the sun in moderate climatic zones arises from the filtering of the heat radiation of the sun by water vapor in the atmosphere of the earth. The filter effect of water decreases those parts of infrared radiation (most parts of infrared-B and -C and the absorption bands of water within infrared-A), which would cause - by reacting with water molecules in the skin - only an undesired thermal load to the surface of the skin. Technically water-filtered infrared-A (wIRA) is produced in special radiators, whose full spectrum of radiation of a halogen bulb is passed through a cuvette, containing water, which absorbs or decreases the described undesired wavelengths of the infrared radiation.

Within infrared the remaining wIRA (within 780-1400 nm) mainly consists of radiation with good penetration properties into tissue and therefore allows - compared to unfiltered heat radiation - a multiple energy transfer into tissue without irritating the skin, similar to the sun's heat radiation in moderate climatic zones. Typical wIRA radiators emit no ultraviolet (UV) radiation and nearly no infrared-B and -C radiation and the amount of infrared-A radiation in relation to the amount of visible light (380-780 nm) is emphasized.

Wound healing and infection defense depend decisively on a sufficient supply with energy and oxygen. The central portion of chronic wounds is often clearly hypoxic and relatively hypothermic, representing a deficient energy supply of the tissue, which impedes wound healing or even makes it impossible. wIRA produces a therapeutically usable field of heat in the tissue and increases tissue temperature, tissue oxygen partial pressure, and tissue perfusion. These three factors are vital for a sufficient tissue supply with energy and oxygen. The improvement of both the energy supply per time (increase of metabolic rate) and the oxygen supply can be one explanation for the good clinical effect of wIRA on wounds and wound infections. In addition wIRA has non-thermal and non-thermic effects, which are based on putting direct stimuli on cells and cellular structures.

Several wound studies showed under therapy with wIRA a clear reduction of pain and of the required dose of pain medication and an improved wound healing process with a tendency towards lower infection rates and a shorter hospital stay after abdominal surgery (study of the University Heidelberg/Germany) and an accelerated wound healing of severely burned children (study of the children's hospital in Kassel/Germany). Complete healings of chronic non-healing wounds were achieved (studies in Basel/Switzerland and of the University Freiburg/Germany and of the University Tromsø/Norway together with the hospital in Hillerød/Denmark). At the beginning in the infrared thermography clearly recognizable temperature differences between ulcer base and ulcer wall were mostly balanced until complete healing.

wIRA can be used for the treatment of wound seromas and for prevention and therapy of decubital ulcers.

wIRA is contact-free, easily applied, without discomfort to the patient, with absent consumption of material and with a good effect in the depth. The irradiation of the typically uncovered wound is carried out with a wIRA radiator.

Publications:

Hoffmann G. Principles and working mechanisms of water-filtered infrared-A (wIRA) in relation to wound healing [review]. Grundlagen und Wirkprinzipien von wassergefiltertem Infrarot A (wIRA) in Bezug zur Wundheilung [Übersichtsarbeit]. GMS Krankenhaushyg Interdiszip. 2007;2(2):Doc54. Online available from:
http://www.egms.de/pdf/journals/dgkh/2007-2/dgkh000087.pdf (PDF) and
http://www.egms.de/en/journals/dgkh/2007-2/dgkh000087.shtml (shtml).
Hartel M, Illing P, Mercer JB, Lademann J, Daeschlein G, Hoffmann G. Therapy of acute wounds with water-filtered infrared-A (wIRA) [review]. Therapie akuter Wunden mit wassergefiltertem Infrarot A (wIRA) [Übersichtsarbeit]. GMS Krankenhaushyg Interdiszip. 2007;2(2):Doc53. Online available from:
http://www.egms.de/pdf/journals/dgkh/2007-2/dgkh000086.pdf (PDF) and
http://www.egms.de/en/journals/dgkh/2007-2/dgkh000086.shtml (shtml).
von Felbert V, Schumann H, Mercer JB, Strasser W, Daeschlein G, Hoffmann G. Therapy of chronic wounds with water-filtered infrared-A (wIRA) [review]. Therapie chronischer Wunden mit wassergefiltertem Infrarot A (wIRA) [Übersichtsarbeit]. GMS Krankenhaushyg Interdiszip. 2007;2(2):Doc52. Online available from:
http://www.egms.de/pdf/journals/dgkh/2008-2/dgkh000085.pdf (PDF) and
http://www.egms.de/en/journals/dgkh/2008-2/dgkh000085.shtml (shtml).
Contact address for wIRA for chronic wounds:
Dr. med. Hauke Schumann
University Medical Center Freiburg
Department of Dermatology
Hauptstrasse 7
D-79104 Freiburg
Germany
Tel: 0049-761-270-6701
Fax: 0049-761-270-6829
Hauke.Schumann@uniklinik-freiburg.de
Contact address for wIRA for acute wounds:
PD Dr. med. Mark Hartel
Technical University Munich
Department of Surgery
Ismaninger Strasse 22
D-81675 Munich
Germany
Tel: 0049-89-4140-5099
Mark.Hartel@chir.med.tu-muenchen.de
Contact address for wIRA for burns:
Dr. med. Peter Illing
Children's Hospital Park Schönfeld
Department of Pediatric Surgery
Frankfurter Strasse 167
D-34121 Kassel
Germany
Tel: 0049-561-9285-124
Fax: 0049-561-9285-230
P.Illing@park-schoenfeld.de

Wolfgang Müller | idw
Further information:
http://awmf.org

More articles from Health and Medicine:

nachricht Norovirus evades immune system by hiding out in rare gut cells
12.10.2017 | University of Pennsylvania School of Medicine

nachricht Flexible sensors can detect movement in GI tract
11.10.2017 | Massachusetts Institute of Technology

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: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

Im Focus: New nanomaterial can extract hydrogen fuel from seawater

Hybrid material converts more sunlight and can weather seawater's harsh conditions

It's possible to produce hydrogen to power fuel cells by extracting the gas from seawater, but the electricity required to do it makes the process costly. UCF...

Im Focus: Small collisions make big impact on Mercury's thin atmosphere

Mercury, our smallest planetary neighbor, has very little to call an atmosphere, but it does have a strange weather pattern: morning micro-meteor showers.

Recent modeling along with previously published results from NASA's MESSENGER spacecraft -- short for Mercury Surface, Space Environment, Geochemistry and...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Taking screening methods to the next level

17.10.2017 | Life Sciences

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

‘Find the Lady’ in the quantum world

17.10.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>