Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumonia

Background Legionella species are important causative organisms of severe pneumonia. However, data are limited on predictors of progression to severe Legionella pneumonia (LP). Therefore, the risk factors for LP progression from non-severe to the severe form were investigated in the present study. M...

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Main Authors: Jin-Young Huh, Sang-Ho Choi, Kyung-Wook Jo, Jin Won Huh, Sang-Bum Hong, Tae Sun Shim, Chae-Man Lim, Younsuck Koh
Format: Article
Language:English
Published: Korean Society of Critical Care Medicine 2022-11-01
Series:Acute and Critical Care
Subjects:
Online Access:http://www.accjournal.org/upload/pdf/acc-2022-00521.pdf
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author Jin-Young Huh
Sang-Ho Choi
Kyung-Wook Jo
Jin Won Huh
Sang-Bum Hong
Tae Sun Shim
Chae-Man Lim
Younsuck Koh
author_facet Jin-Young Huh
Sang-Ho Choi
Kyung-Wook Jo
Jin Won Huh
Sang-Bum Hong
Tae Sun Shim
Chae-Man Lim
Younsuck Koh
author_sort Jin-Young Huh
collection DOAJ
description Background Legionella species are important causative organisms of severe pneumonia. However, data are limited on predictors of progression to severe Legionella pneumonia (LP). Therefore, the risk factors for LP progression from non-severe to the severe form were investigated in the present study. Methods This was a retrospective cohort study that included adult LP patients admitted to a 2,700-bed referral center between January 2005 and December 2019. Results A total of 155 patients were identified during the study period; 58 patients (37.4%) initially presented with severe pneumonia and 97 (62.6%) patients with non-severe pneumonia. Among the 97 patients, 28 (28.9%) developed severe pneumonia during hospitalization and 69 patients (71.1%) recovered without progression to severe pneumonia. Multivariate logistic regression analysis showed platelet count ≤150,000/mm3 (odds ratio [OR], 2.923; 95% confidence interval [CI], 1.100–8.105; P=0.034) and delayed antibiotic treatment >1 day (OR, 3.092; 95% CI, 1.167–8.727; P=0.026) were significant independent factors associated with progression to severe pneumonia. Conclusions A low platelet count and delayed antibiotic treatment were significantly associated with the progression of non-severe LP to severe LP.
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spelling doaj.art-1928eb2fa61349d2a9a48da49423c8f52022-12-22T03:53:56ZengKorean Society of Critical Care MedicineAcute and Critical Care2586-60522586-60602022-11-0137454354910.4266/acc.2022.005211420Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumoniaJin-Young Huh0Sang-Ho Choi1Kyung-Wook Jo2Jin Won Huh3Sang-Bum Hong4Tae Sun Shim5Chae-Man Lim6Younsuck Koh7 Department of Pulmonology and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, Korea Department of Pulmonology and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Department of Pulmonology and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Department of Pulmonology and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Department of Pulmonology and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Department of Pulmonology and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, KoreaBackground Legionella species are important causative organisms of severe pneumonia. However, data are limited on predictors of progression to severe Legionella pneumonia (LP). Therefore, the risk factors for LP progression from non-severe to the severe form were investigated in the present study. Methods This was a retrospective cohort study that included adult LP patients admitted to a 2,700-bed referral center between January 2005 and December 2019. Results A total of 155 patients were identified during the study period; 58 patients (37.4%) initially presented with severe pneumonia and 97 (62.6%) patients with non-severe pneumonia. Among the 97 patients, 28 (28.9%) developed severe pneumonia during hospitalization and 69 patients (71.1%) recovered without progression to severe pneumonia. Multivariate logistic regression analysis showed platelet count ≤150,000/mm3 (odds ratio [OR], 2.923; 95% confidence interval [CI], 1.100–8.105; P=0.034) and delayed antibiotic treatment >1 day (OR, 3.092; 95% CI, 1.167–8.727; P=0.026) were significant independent factors associated with progression to severe pneumonia. Conclusions A low platelet count and delayed antibiotic treatment were significantly associated with the progression of non-severe LP to severe LP.http://www.accjournal.org/upload/pdf/acc-2022-00521.pdfantibioticspneumoniaprognosisthrombocytopenia
spellingShingle Jin-Young Huh
Sang-Ho Choi
Kyung-Wook Jo
Jin Won Huh
Sang-Bum Hong
Tae Sun Shim
Chae-Man Lim
Younsuck Koh
Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumonia
Acute and Critical Care
antibiotics
pneumonia
prognosis
thrombocytopenia
title Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumonia
title_full Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumonia
title_fullStr Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumonia
title_full_unstemmed Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumonia
title_short Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe pneumonia
title_sort incidence and risk factors associated with progression to severe pneumonia among adults with non severe pneumonia
topic antibiotics
pneumonia
prognosis
thrombocytopenia
url http://www.accjournal.org/upload/pdf/acc-2022-00521.pdf
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