Negative pressure wound therapy (NPWT) supports the healing process by removing fluid and drawing out the infection from a wound, promoting the growth of new tissue. The device works by providing and distributing negative pressure evenly across the wound bed, either through the application of an open cell foam or a gauze dressing. NPWT provides a warm, moist wound bed while removing wound fluid that contains factors that inhibit cell growth, enhances wound oxygenation and improves the flow of blood and nutrients to the wound. NPWT also creates mechanical forces that influence the wound macroscopically, inducing cell proliferation, cell migration to the wound and angiogenesis. For infected wounds, the device can be used to instil antibiotics. In this article, a 57-year-old Caucasian woman with respiratory failure developed sepsis secondary to an intra-abdominal infection with abscess. Vancomycin 1mg/mL wound instillation, instilled as 100mL every 3 hours with a dwell time of 10 minutes, was administered concomitantly with intravenous vancomycin in the successful management of this patient.

Alison Bunnell

Doctor of Pharmacy Candidate 2022, North Dakota State University, Fargo, ND, USA

Erin Beauclair

Doctor of Pharmacy Candidate 2022, North Dakota State University, Fargo, ND, USA

Breanna Jones

Doctor of Pharmacy, Pharmacy Department, Sanford Medical Center Fargo, Fargo, ND, USA

Emily Greenstein

Advanced Practice Registered Nurse and Certified Nurse Practitioner, Wound Care, Sanford Medical Center Fargo, Fargo, ND, USA

Justin M Jones

Doctor of Pharmacy, Pharmacy Department, Sanford Medical Center Fargo, Fargo, ND, USA

Andrea R Clarens

Doctor of Pharmacy Pharmacy Department, Sanford Bemidji Medical  Center, Bemidji, MN, USA

Key words

• Acute kidney injury
• Computed tomography

• Kidney Disease Improving Global Outcomes

• Negative pressure wound therapy

Declaration Emily Greenstein reports she has been a consultant for Urgo medical, 3M and Coloplast. 3M manufactures V. A.C VeraFlo. None of these manufacture or distribute vancomycin instillation described in this manuscript.

Background: In some patients, diabetic foot ulcers may heal slowly despite tight control of blood glucose and normal limb circulation, implying the presence of multifactorial, unidentified factors to wound healing. Previous efforts to identify these factors using binary variables, such as amputation or specific healing timelines, inadequately reflect the complexities of wound healing capacity.

Aims: We aimed to identify factors associated with delayed diabetic foot ulcer healing.

Methods: Eight factors were assumed to affect diabetic foot ulcer healing; patient age, age at the onset of diabetes, sex, peripheral arterial disease (PAD), HbA1c, smoking as measured by the Brinkman index (BI), dialysis and bone infection. They were analysed using linear regression and multivariable analysis against three healing indices: total healing period (THP), granulation time (GT) and time to contraction onset (TCO).

Results: PAD and BI correlated positively with all three indices. Patients with PAD exhibited significantly extended THP, GT and TCO. An increase of 100 in BI corresponded with a 1.53 day increase in GT. Conclusion: PAD was associated with delayed healing according to every measure analysed, while BI was linked with slower granulation. Besides THP, the measurements of GT — and possibly TCO — could evaluate some aspects of healing capacity of diabetic ulcers.

Kazufumi Tachi

Senior Lecturer, Division of Plastic Surgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan

Koichi Gonda

Professor, Division of Plastic Surgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan

Takashi Kochi

Chief Surgeon, Department of Plastic Surgery, Sendai City Hospital, Sendai, Japan

Jyunya Niwa

Research Associate, Division of Plastic Surgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan

Key words

Diabetic foot ulcer

New index of wound healing

Brinkman index

Declarations

All authors have no conflicts of interest to declare.

Surgical site infections of post-transplanted heart patients, as well as wound care, have little scientific evidence in Mexico, although adequate treatment in infected wounds with advanced wound dressings or cellulose membranes that allow us to clearly assess the incision can reduce hospital stay, pain, anxiety and the infection itself, together with appropriate antibiotic therapy. The aim of this case report is to describe the management and care of the surgical site infection (Gram-negative bacillus) following a heart transplant that includes the transparent cellulose membrane.

Dalila Diana Bautista Uribe

Nurse Specialised in Wounds, Stomata and Burns, Centro Médico Siglo XXI Cardiología, Mexico City, CDMX, Mexico

Key words

• Surgical site infection
• Bacterial cellulose membrane

• Heart transplant

This article is based on a presentation by Professor Steven Jeffery at the annual Wounds UK conference in Harrogate, on 7 November 2023. Professor Jeffery presented clinical studies on how a bioengineered wound therapy with a porcine urinary bladder matrix (UBM) may facilitate healing of chronic wounds.

Steven LA Jeffery

Medical Director Pioneer Wound Telehealth and Professor of Wound Study, Birmingham City University

John McRobert

Clinical Research Director, Pioneer Wound Telehealth

Key words

• Chronic diabetic wounds

• Urinary bladder matrix
• Macrophages
• Wound healing
• Meeting report
• Wound care services

This meeting report has been funded by an educational grant from Integra