PMID- 36251856 OWN - NLM STAT- MEDLINE DCOM- 20221230 LR - 20230524 IS - 1529-4242 (Electronic) IS - 0032-1052 (Print) IS - 0032-1052 (Linking) VI - 151 IP - 1 DP - 2023 Jan 1 TI - Is There a Wound Recontamination by Eluates with High Bacterial Load in Negative-Pressure Wound Therapy with Instillation and Dwell Time? PG - 136e-147e LID - 10.1097/PRS.0000000000009770 [doi] AB - BACKGROUND: This study investigated bacterial colonization of the foam eluate after negative-pressure wound therapy (NPWT) with instillation and dwell time (NPWTi-d) to obtain an indication of possible recontamination of the wound during NPWTi-d. To detect bacterial colonization and the extent of planktonic and nonplanktonic bioburden as comprehensively as possible, routine culture and molecular biology methods were used. METHODS: Before (time point 1) and after (median 3.0 days; time point 2) NPWT ( n = 15) and NPWTi-d with antiseptic installation ( n = 15), wound bed [22 acute, eight chronic wounds; median age, 51 years (range, 24 to 91); 26 men], foam, and eluate were examined by routine culture methods and fluorescence in situ hybridization (FISH), polymerase chain reaction, and FISH sequencing (FISHseq). RESULTS: At time point 2, 94.9% (37 of 39) of the pathogens identifiable in the eluate were also detected in the wound bed. Foam and eluate were always bacterially contaminated. NPWTi-d resulted in a significant reduction in the number of pathogen species compared with NPWT (NPWTi-d, time point 1 versus time point 2: P = 0.026; NPWT, time point 1 versus time point 2: not significant). Routine culture of wound bed samples at time point 2 identified only 28 of 52 (53.8%) of the pathogens, whereas examination of wound bed, foam, and eluate and additional FISHseq use detected 50 of 52 (96.2%) of the bacterial species. FISHseq identified biofilm in one and microcolonies in 10 wounds (time point 2). CONCLUSIONS: The bacterial load of the foam is flushed back into the wound during NPWTi-d. FISHseq should be used in addition to the routine culture method when pathogen identification and detection of nonplanktonic bacterial growth is particularly important for the patient's therapy. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, V. CI - Copyright (c) 2022 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of the American Society of Plastic Surgeons. All rights reserved. FAU - Stichling, Marcus AU - Stichling M AD - From Trauma and Orthopedic Surgery, Septic and Reconstructive Surgery, Research and Treatment Center Septic Defect Woundsand. FAU - Wiessner, Alexandra AU - Wiessner A AD - Biofilmcenter, Institute for Microbiology, Infectious Diseases, and Immunology, Charite-University Medicine Berlin and MoKi Analytics GmbH. FAU - Kikhney, Judith AU - Kikhney J AD - Biofilmcenter, Institute for Microbiology, Infectious Diseases, and Immunology, Charite-University Medicine Berlin and MoKi Analytics GmbH. FAU - Gatzer, Renate AU - Gatzer R AD - Department of Microbiology, Federal Armed Forces of Germany, Bundeswehr (Military) Academic Hospital. FAU - Muller, Martin AU - Muller M AD - Department of Microbiology, Federal Armed Forces of Germany, Bundeswehr (Military) Academic Hospital. FAU - Scheuermann-Poley, Catharina AU - Scheuermann-Poley C AD - From Trauma and Orthopedic Surgery, Septic and Reconstructive Surgery, Research and Treatment Center Septic Defect Woundsand. FAU - Moter, Annette AU - Moter A AD - Biofilmcenter, Institute for Microbiology, Infectious Diseases, and Immunology, Charite-University Medicine Berlin and MoKi Analytics GmbH. FAU - Willy, Christian AU - Willy C AD - From Trauma and Orthopedic Surgery, Septic and Reconstructive Surgery, Research and Treatment Center Septic Defect Woundsand. LA - eng PT - Journal Article DEP - 20221017 PL - United States TA - Plast Reconstr Surg JT - Plastic and reconstructive surgery JID - 1306050 SB - IM MH - *Wound Healing MH - *Negative-Pressure Wound Therapy/methods MH - Bacterial Load MH - In Situ Hybridization, Fluorescence MH - Therapeutic Irrigation/methods PMC - PMC9788932 EDAT- 2022/10/18 06:00 MHDA- 2022/12/31 06:00 PMCR- 2022/12/23 CRDT- 2022/10/17 14:23 PHST- 2022/10/18 06:00 [pubmed] PHST- 2022/12/31 06:00 [medline] PHST- 2022/10/17 14:23 [entrez] PHST- 2022/12/23 00:00 [pmc-release] AID - 00006534-202301000-00036 [pii] AID - 10.1097/PRS.0000000000009770 [doi] PST - ppublish SO - Plast Reconstr Surg. 2023 Jan 1;151(1):136e-147e. doi: 10.1097/PRS.0000000000009770. Epub 2022 Oct 17.