Difference in mean change scores was 2♵2 on the 3-18 severity scale.

A significant difference in changes in wound severity was found (t = 5♶7, P < 0.000). This scale measures surface area, wound colour/tissue assessment, and skin integrity with potential scores of 3 to 18 (higher scores indicate greater severity). A severity score was used to assess SDTI severity before treatment and healing/progression after treatment. Participants in both groups received standard of care for treating pressure ulcers. Data were examined retrospectively on 85 patients (intervention group = 43 and non intervention group = 42) with 127 SDTI (intervention group = 64 and non intervention group = 63). Participants were adults ranging in age from 28 to 93 years old, with multiple diagnoses including anaemia, diabetes mellitus and hypertension. The purpose of this study was to assess the effectiveness of non contact low-frequency ultrasound on the healing of suspected deep tissue injury (SDTI). NLFU for treatment of chronic wounds was associated with consistent and substantial wound size reductions, as well as favorable rates of healing. In seven studies (N=429) reporting proportion of wounds healing by study end (mean time to healing 8.2 weeks median 6.8 weeks), meta-analyzed healing rates over time suggest 32.7% of wounds healed on average by 6 weeks (95% CI 23.3%-42.1%) and 41.7% by 12 weeks. In four studies (N=278) reporting reduction in wound volume, NLFU was associated with 79.7% volume reduction (95% CI 46.1%-98.8%) over a mean 12 weeks. In four studies (N=188) reporting change in wound area from baseline, NLFU was associated with 85.2% area reduction (95% CI 64.7%-97.6%) over a mean 7 weeks. We used random-effects linear regression models to estimate the proportional reductions in wound area and volume and the proportion of wounds healed from baseline to last follow-up. A search of the PubMed database was conducted in January 2010 and updated in October 2010. We performed a meta-analysis of eight published studies reporting effects of NLFU on wound size and healing rate of chronic wounds in 444 NLFU-treated patients. Our objective was to summarize and quantify the effects of a noncontact low-frequency ultrasound (NLFU) therapy on healing of chronic wounds.

Ev3 ultrasoniv frequency