ABSTRACT
An experiment was done in guinea pigs to evaluate the efficacy of therapeutic ultrasound, using the under water technique, for cleansing of infected wounds. A. triangular wound in the dorsal aspect of 75 guinea pigs were done under general anaesthesia. The wounds in 60 guinea pigs were infected by placing one-milliliter of the diluted culture; containing 1x10[5] staphylococcus aureus, on its surface, After 24 hours, animals with infected wounds were randomly assigned to one of the four groups. The wounds in group [I] were daily cleaned with pulsed ultrasound 1.5 w/cm for five minutes, using the underwater technique, while in group [II] wounds were subjected to the same therapy as in group [I], but with mock-ultrasonic apparatus. The wounds in group [III] were daily subjected to the conventional method of cleansing using sterile gauze and polyvinyl povidone iodine [Betadine] solution, while the wounds in group [IV] were received no treatment. The wounds of the remaining 15 guinea pigs were not infected and acted as controls for any added infection [Group [V]] It was found that therapeutic ultrasound by the under water technique removed bacteria from experimental wounds, more efficiently than conventional procedures, and therapy reduces the likelihood of sepsis. In addition, it facilitate the process of wound healing. This effective, safe, simple and painless technique should be considered for treatment of infected wounds