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33rd Annual Scientific Meeting proceedings

Stream: SA   |   Session: Small Animal Resident Forum - Soft Tissue
Date/Time: 06-07-2023 (20:00 - 20:15)   |   Location: Chamber Hall
Outcomes of negative pressure wound therapy versus wet-to-dry dressings for management of open wounds in dogs and cats: A retrospective study of 124 paired cases (2011-2021)
Taylor O1, Coleman M1, Lee K*2, Frykfors von Hekkel A*1
1Royal Veterinary College, London, United Kingdom, 2Veterinary Specialists Scotland, Edinburgh, United Kingdom.

Negative pressure wound therapy (NPWT) for open wounds has been shown to enhance wound healing, but requires specialist equipment. Wet-to-dry dressings (WtD) are simple and cost-effective, but non-selectively debride the wound surface. The purpose of this study was to compare outcomes of NPWT versus WtD in a cohort of clinical cases.

Materials and Methods
Retrospective, case-matched control study. Canine and feline open wounds managed with NPWT were classified according to aetiology, wound size/depth, age and bodyweight. Wounds were paired according to these criteria with a wound managed with WtD within the same timeframe allowing comparison between groups. Outcomes included subjective wound progression assessment (SWPA), duration of hospitalisation (DOH), overall duration of wound management (ODWM), wound-associated complications post-NPWT/WtD (WC) and wound resolution (if wound ultimately healed). Treatment groups were compared using Mann-Whitney U, Chi-square and Fisher’s Exact tests.

Fifteen cats and 47 dogs were included in NPWT group and paired with WtD counterparts (n=124). There was no difference in signalment, weight or wound size/depth between groups. NPWT was associated with fewer WC than WtD (p=0.033). DOH was longer for patients undergoing NPWT (median 14d, IQR:9.75,24.25) compared with WtD (median 9d, IQR:6,12.25, p<0.001). ODWM was longer for patients undergoing NPWT (median 6d, IQR 4-9.25) compared with WtD (median 4d, IQR 3-8.25, p=0.032). No difference in SWPA or wound resolution was observed.

NPWT wound management was associated with a lower complication rate than WtD, but duration of treatment was longer with no difference in wound healing or resolution.

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