Abstract:
:The knowledge of the expected time-to-positivity (TTP) of blood cultures by major pathogens is essential both clinically and economically. To this end, we conducted the present two-year study in our Institution, aiming to assess the TTP of all the major microorganisms including Enterobacteriaceae, Pseudomonas aeruginosa, Acinetoacter baumannii, Enterococcii spp, Staphylococcus aureus and yeasts, to determine whether a 3-day interval is sufficient for their detection. The TTP for each case of strain isolation per patient was determined as the TTP of the first bottle among a set of bottles collected within the same period of time to be flagged as positive per patient. Based on our results, almost all major Gram-negative (99.30%), Gram-positive microbia (99.01%) and yeasts (98.85%) were detected within the first 5-days of incubation, leading to the solid conclusion that a 5-day period of incubation is adequate to detect almost all the major routine pathogens. By contrast, when a 3-day period was examined acceptable results were only found for Gram-negative (98.33%) and Gram-positive (98.51%) microbia. A significant proportion of yeasts (8.05%) could not be detected within this time frame. Therefore, regarding the yeasts, a 3-day incubation period cannot be considered as adequate and is not advocated.
journal_name
Exp Ther Medjournal_title
Experimental and therapeutic medicineauthors
Moustos E,Staphylaki D,Christidou A,Spandidos DA,Neonakis IKdoi
10.3892/etm.2017.5291subject
Has Abstractpub_date
2017-12-01 00:00:00pages
6074-6076issue
6eissn
1792-0981issn
1792-1015pii
ETM-0-0-5291journal_volume
14pub_type
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