Main outcome measures
In 51 subjects with DNSI, 15 cases were not treated with abscess incision and drainage; 36 cases were treated by incision, drainage and dressing change: 23 cases were treated with traditional incision and drainage and dressing change; 13 cases were given the combined treatment of incision and drainage, pyogenic cavity aerobic therapy and negative pressure drainage. The average number of days of dressing change and average hospital stay were compared between the two groups
Results
The average hospitalization days in the traditional dressing group were (26.74±3.393) days, and the average days of postoperative dressing change were (25.91±3.427) days. The average hospitalization days in pyogenic cavity aerobic therapy + negative pressure drainage were (11.08±2.108) days, and the average days of postoperative dressing change were (3.692±0.208) days. All 51 patients were cured.