{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T16:52:52Z","timestamp":1790959972547,"version":"4.1.0"},"reference-count":23,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2019,11,6]],"date-time":"2019-11-06T00:00:00Z","timestamp":1572998400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT &amp; Future Planning","award":["2017R1D1A1B03031452"],"award-info":[{"award-number":["2017R1D1A1B03031452"]}]},{"name":"Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea","award":["2018-769 and 2019-769"],"award-info":[{"award-number":["2018-769 and 2019-769"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>This study aimed to identify trends in bacteria isolated from Korean adults with chronic rhinosinusitis (CRS). Enrolled were CRS patients who underwent sinus bacterial culture during endoscopic sinus surgery between 2007\u20132008, 2011\u20132012, and 2017\u20132018 (n = 510). Patients\u2019 clinical characteristics, bacterial culture results, and antibiotic resistance were reviewed. The bacteria isolation rate was 76.3% (73.9% for CRS with nasal polyps and 82.8% for CRS without nasal polyps; p = 0.038). In total, 650 strains were isolated, the most common was Coagulase Negative Staphylococci (CNS) (28.0%), followed by Streptococcus species (12.2%), Propionibacterium species (8.0%), Corynebacterium species (7.5%), Staphylococcus aureus (6.2%), Haemophilus species (5.7%), Klebsiella species (5.1%), and Pseudomonas aeruginosa (4.2%). Furthermore, an analysis of the bacterial trends in the three groups showed significant increases over time for the isolation of CNS (p = 0.006), Klebsiella (p = 0.002), and P. aeruginosa (p = 0.007) and extended-spectrum beta-lactamase (ESBL) producing Klebsiella (p &lt; 0.001) and Enterobacter (p = 0.007) species in terms of antibiotics resistance. This study demonstrates that the frequency of CNS, Klebsiella, and P. aeruginosa in CRS patients and the ESBL-producing Klebsiella and Enterobacter species has significantly increased in CRS patients over the last decade.<\/jats:p>","DOI":"10.3390\/jcm8111889","type":"journal-article","created":{"date-parts":[[2019,11,7]],"date-time":"2019-11-07T06:52:36Z","timestamp":1573109556000},"page":"1889","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Recent Trends in Bacteriology of Adult Patients with Chronic Rhinosinusitis"],"prefix":"10.3390","volume":"8","author":[{"given":"Doyeon","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Otorhinolaryngology\u2013Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdullah M.","family":"Assiri","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology\u2013Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea"},{"name":"Department of Otolaryngology\u2013Head and Neck Surgery, College of Medicine, Najran University, King Abdulaziz Road, Najran 1988, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9215-6867","authenticated-orcid":false,"given":"Ji Heui","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology\u2013Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,11,6]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"European Position Paper on Rhinosinusitis and Nasal Polyps 2012","volume":"23","author":"Fokkens","year":"2012","journal-title":"Rhinol. 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