Infection and Drug Resistance (Nov 2022)

Manual Homogenization Improves the Sensitivity of Microbiological Culture for Patients with Pyogenic Spondylitis

  • Cui Y,
  • Mi C,
  • Wang B,
  • Zheng B,
  • Sun L,
  • Pan Y,
  • Lin Y,
  • Shi X

Journal volume & issue
Vol. Volume 15
pp. 6485 – 6493

Abstract

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Yunpeng Cui,1 Chuan Mi,1 Bing Wang,1 Bo Zheng,2 Liying Sun,3 Yuanxing Pan,1 Yunfei Lin,1 Xuedong Shi1 1Department of Orthopaedics, Peking University First Hospital, Beijing, People’s Republic of China; 2Department of Clinical Pharmacology, Peking University First Hospital, Beijing, People’s Republic of China; 3Department of Clinical Laboratory, Peking University First Hospital, Beijing, People’s Republic of ChinaCorrespondence: Xuedong Shi, Department of Orthopaedics, Peking University First Hospital, No. 7 Xishiku Street, Xicheng District, Beijing, 100032, People’s Republic of China, Tel +86 28-010-83572970, Email [email protected]: This study aimed to investigate the effects of manual homogenization on the sensitivity of microbiological culture for patients with pyogenic spondylitis.Methods: From October 2018 to March 2021, patients undergoing fluoroscopy-guided biopsy or open debridement due to pyogenic spondylitis were recruited. Their demographic data and baseline characteristics were recorded. Tissue samples were obtained through fluoroscopy-guided biopsy or open debridement. Tissue samples were divided into three parts: manual homogenization (MH), manual mixture (MM), and pathological examination. Sterile normal saline was set as the negative control to exclude false-positive culture results. The Chi-square test was used to detect the difference of microbiological culture results.Results: Twenty-four consecutive patients (33 tissue cultures) with pyogenic spondylitis treated in our department between October 2018 and March 2021 were recruited in this study. The average age was 61.7± 3.2 years old and 10 patients were female. The MH group had a significantly higher positive rate compared with the MM group in aerobic conditions: 78.8% (26 isolates) vs 54.5% (18 isolates), P=0.037 and anaerobic condition: 63.6% (21 isolates) vs 39.4% (13 isolates), P=0.049. The results of subgroup analyses showed that MH could improve the culture sensitivity for patients with previous antibiotics use and without paravertebral abscesses but not reach a significant level on statistics.Conclusion: Based on the present study, manual homogenization could improve the sensitivity of microbiological cultures for patients with pyogenic spondylitis.Keywords: tissue culture, pyogenic spondylitis, manual homogenization, blood culture bottle

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