Case Analysis Of Application Of Negative Pressure Wound Therapy In Chronic Refractory Wounds

Objective:To summarize the technology of negative pressure wound therapy(NPWT)in the clinical application experience of chronic refractory wounds.Methods:The clinical data of 35 patients with chronic refractory wounds,including 15 cases of bedsore,5 cases of necrotizing fasciitis,11 cases of diabetic ulcer,and other types of chronic refractory wounds in 4 cases,treated in our hospital from September 2015 to November 2016 were analyzed.To sum up the problems and measures in the treatment of patients with NPWT,to compare the changes of bacteria-fungi and wound volume or area before and after treatment,and to count the number of negative pressure treatment,the healing condition and the total hospitalization days of each patient.Results:After NPWT treatment,all the wounds were treated with obvious effect,clean wound,rapid granulation tissue formation,and the number of wound dressing decreased.The time taken for appearance of healthy granulation tissue had a mean value of 11.26±3.01 days.The time taken for complete healing of wounds had a mean of 35.67±12.98 days.The difference of wound volume or area before and after NPWT treatment was evaluated by Paired ’t’-test.The results showed that there was significant difference in wound surface before and after intervention(p=0.00).After using 2-8 NPWT,the wound granulation tissue is fresh and the wound culture has no bacteria-fungus growth.Then the wound was repaired with skin graft or flap transfer,and the wound healed completely.During the treatment,no obvious complication occurred in the wound.Conclusion:After the treatment provides the wound bed,the wound bed can often be repaired with a simple method.So NPWT is very important in the treatment of chronic refractory wounds.