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A Multicentre Study about Pattern and Organisms Isolated in Follow-up Blood Cultures

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Author(s)
류남희
Alternative Author(s)
Ryoo, Nam Hee
Publication Year
2013
Abstract
Background: This study analysed patterns of requests
for repeated blood cultures and the microorganisms
isolated in follow-up cultures.
Methods: The frequencies and intervals of repeated
blood cultures performed during January and February
of 2010 at seven university-affiliated hospitals
in Korea were evaluated. Results of microbiological
cultures at follow-up were analysed with respect to
pathogen replication, immune clearance, appearance
of new pathogens, and skin contaminants.
Results: Among 3,072 patients who received repeated
blood cultures, the average number of requests
was 3.2. Of the 5,241 follow-up blood culture events
recorded, durations of 1, 2, and 3 days between cultures
were identified for 23.1%, 21.4%, and 15.0% of
events, respectively. Relative to each initial culture,
persistent pathogen growth in subsequent culture(s)
accounted for 2.3% of events, whereas immune clearance
was confirmed in 8.5% of events. Previously
undetected pathogens were isolated in 5.2% of the
follow-up cultures, the majority of which grew after
an interval of six days. Skin contaminants were detected
in 7.6% of the repeated cultures, and 76.1% of
the follow-ups displayed no growth of microorganisms.
Conclusion: The most common numbers of repeat
culture requests were two and three, and these were
typically performed within three days of the initial
culture. Among the follow-up cultures, new pathogens
were identified in 5.2%, and the majority of this
group likely presented for follow-up during a new disease
episode. (Ann Clin Microbiol 2013;16:8-12)
Key Words: Bacteraemia, Follow-up study, Sepsis
Department
Dept. of Laboratory Medicine (진단검사의학)
Publisher
School of Medicine
Citation
Annals of Clinical Microbiology, Vol.16(1) : 42959-42959, 2013
Type
Article
ISSN
2288-0585
DOI
10.5145/ACM.2013.16.1.8
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/34990
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