ISSN:
1524-475X
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Medizin
Notizen:
The use of adjunctive peri-wound, ultrasound with either a 1 MgHz or 3 MgHz frequency has been reported on in the literature with variable results. MIST ultrasound therapy is a novel application of direct wound bed application of kilohertz ultrasound waves utilizing a normal saline mist as the coupling mechanism, allowing for no direct patient contact. The mist generated by the system is of relative uniform particle size and acts as a conduit of ultrasound energy. Unlike ultrasonic baths, which dissipate the vibrational energy over a large area, the transducer horn focuses the energy into a smaller area of application.The MIST™ system consists of an ultrasonic power supply (generator), a transducer (or alternately referred to as the converter), and an applicator coupled to the transducer. The generator converts voltage to high frequency electrical energy. This electrical energy is transmitted to the piezoelectric transducer within the converter, where it is changed to mechanical vibrations. The generator is designed to operate the converter at 40 kHz with a distal displacement of 60 microns. Published reports have described various biological effects of low frequency ultrasound including VEGF and PDGF production, increased protein synthesis, improved bone and wound healing. Other authors have published abstracts demonstrating clinical efficacy of this device on a broad range of patients with recalcitrant wounds. This report describes the clinical results of a prospective, non-randomized, efficacy trial, adding MIST ultrasound therapy to current treatment protocols in recalcitrant wounds. Wound healing trajectories before and after treatment will be evaluated and wound healing will be assessed with laser Doppler image analysis and trans-cutaneous oximetry.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1067-1927.2004.0abstractds.x
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