Negative Pressure Wound Therapy for Complex Lower Extremity Wounds

Abstract

Introduction: Negative pressure wound therapy has become a mainstay in managing complex lower extremity wounds. This literature review assesses its effectiveness in promoting granulation, reducing bacterial load, and preparing wounds for definitive closure.

Methods: A systematic review was performed using Cochrane Library and CINAHL. Studies included randomized controlled trials and prospective cohorts comparing NPWT to conventional dressings in diabetic ulcers, traumatic wounds, and post-surgical dehiscence. Primary outcomes: time to granulation and closure rate.

Results: Twenty-two studies met criteria. NPWT reduced time to granulation by a mean of 40% compared to conventional dressings. Bacterial load decreased significantly within one week. Complete wound closure rates were higher with NPWT (78% versus 55%). No significant difference in major amputation rates was found. Pain scores were similar between groups.

Discussion: NPWT accelerates wound healing through mechanical stimulation and exudate management. Limitations include high cost and need for specialized equipment. Patient compliance is generally good.

Conclusions: NPWT is effective for complex lower extremity wounds, particularly in preparing wounds for skin grafting or flap coverage. Cost-effectiveness analyses are warranted.