In vitro efficacy of a 0.2% polyhexamethylene biguanide‐impregnated gauze dressing against pathogenic bacterial isolates found in horses

Autor: Barbara A. Byrne, Charlene V. Noll, Jorge E. Nieto, Isabelle Kilcoyne, Timothy Thio
Rok vydání: 2021
Předmět:
Zdroj: Veterinary Surgery. 50:880-887
ISSN: 1532-950X
0161-3499
Popis: OBJECTIVE To determine the ability of 0.2% polyhexamethylene biguanide (PHMB)-impregnated gauze to inhibit the growth of bacteria isolated from equine infected sites. STUDY DESIGN In vitro study. METHODS Nine bacterial isolates were obtained from cultures submitted from equine patients presenting with penetrating injuries of the hoof (n = 4), septic osteitis (n = 1), synovial sepsis (n = 1), wounds (n = 2), and incisional infection following laparotomy (n = 1). Two standardized strains were also included. A standard inoculum of each isolate was placed on 12 Muller-Hinton agar plates. Squares (2.5 cm × 2.5 cm) of 0.2% PHMB-impregnated (n = 6) and nonimpregnated control gauze (n = 6) were placed on inoculated agar plates. Bacterial growth under each gauze square was assessed after a 24-h incubation period and areas of inhibition were measured to a standardized scale, using image-processing software. Mean ± SD growth inhibition (%) using 0.2% PHMB-impregnated gauze was compared to the nonimpregnated gauze for each isolate using Student's t test (p
Databáze: OpenAIRE