The use of custom-made negative pressure wound therapy to manage acute wound infections: a retrospective outcomes study.

Background: NPWT has been used to treat various wounds. Scant evidence exists on the use of custom-made NPWT for infected wounds. NPWT dressings promote wound healing by increasing local blood flow and antibiotic concentration, and by removing exudates from the wound.

Objective: To report the use of custom-made NPWT dressings to manage complex infected wounds of the lower limb.

Materials and methods: The authors retrospectively reviewed the records of 43 patients with complex infected wounds of the lower limb treated with debridement and low-cost, custom-made NPWT dressing connected to wall suction from January 1, 2018 to December 31, 2020, at PSG Medical College Hospital, Coimbatore, India.

Results: A total of 43 patients with infected wounds of the lower limb were treated with the custom-made NPWT dressings. Second-look debridement was required in 5 patients. An average of 5 dressing changes were required for optimal wound granulation, with 23% of patients (n = 10) requiring secondary suturing and 62% (n = 27) requiring STSG for definitive coverage of the wound. Healing by secondary intention was achieved in 6 patients. The average duration from the start of therapy until the wound was ready for coverage (STSG or secondary suturing) was 2.5 weeks (range, 1-5 weeks), with an average time to complete wound healing of 5 weeks (range, 3-7 weeks). The most common wound isolate was Staphylococcus aureus (60%). No complications occurred.

Conclusions: Custom-made NPWT dressings are safe to use in complex infected lower limb wounds. These dressings keep the wound dry and promote healing. Wound debridement followed by NPWT combined with antibiotic therapy can act synergistically to promote wound healing and control infection.