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Updated: Jan 23, 2026
Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems
Published on: May 2, 2025
Early-stage Management of Complex Wounds Using Negative Pressure Wound Therapy With Instillation and a Dressing With
Mary Anne Obst1, Jane Harrigan2, Aaron Wodash3
1Complex Abdominal Reconstruction Service, Regions Hospital, Saint Paul, MN.
Introduction:
An early-stage decision clinicians often make in the management of complex wounds is which method of wound preparation will be appropriate for the patient. This decision can be affected by numerous wound and patient risk factors that present challenges and may make surgical debridement difficult in patients with complex wounds. Recently, negative pressure wound therapy with instillation and dwell time (NPWTi-d) using a novel reticulated open-cell foam dressing with through holes (ROCF-CC) was shown to aid in the loosening and removal of thick exudate and nonviable tissue from wounds.
Objective:
The authors present their experiences of using NPWTi-d with ROCF-CC, along with rationales for wound care decisions.
Materials And Methods:
Patients received antibiotics and surgical debridement when appropriate. Therapy selection and parameters were based on a decision-tree model for wound care management that takes into consideration patient and wound information. Most patients received NPWTi-d with ROCF-CC for a duration of 5 to 8 days; however, 1 patient received NPWTi-d with ROCF-CC for more than 30 days due to the wound extent and severity. Therapy consisted of instilling saline or quarter-strength sodium hypochlorite solution with dwell times of 3 to 10 minutes, followed by 2 hours or 3.5 hours of NPWT either at -100 mm Hg or -125 mm Hg.
Results:
There were 6 patients (3 men, 3 women; average age, 58.5 years) treated. Wound types included 3 pressure ulcers, 1 necrotizing soft tissue infection, 1 perianal abscess, and 1 large abdominal wound. Patient comorbidities included obesity, type 2 diabetes, and radiation therapy. In all cases, progression of wound healing was observed with no complications. This method produced viable granulation tissue and wound bed preparation; however, patients were not followed to closure or grafting.
Conclusions:
These cases help support the use of NPWTi-d with ROCF-CC as a viable option for wound care providers in the early-stage management of complex wounds.
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