Time to blood cultures positivity of microorganisms using a continuous-monitoring automated blood cultures system
Article Category: Original article
Published Online: Dec 19, 2019
Page range: 61 - 69
DOI: https://doi.org/10.1515/abm-2019-0041
Keywords
© 2019 Krisanapan and Chaiwarith, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Background
Previous studies showed that clinically significant pathogens were detected within 3 days of incubation using a continuous monitoring automated blood culture instrument.
Objectives
To determine time to blood culture positivity (TTP) of microorganisms using a BD BACTEC™ FX.
Methods
A cross-sectional study was conducted at Maharaj Nakorn Chiang Mai Hospital, Thailand from October to November 2014.
Results
One-hundred and eighty-one patients with 195 episodes of infection and 436 cultures were included in the analysis. Among 181 patients, 55.2% were male and the median age was 61 years (interquartile range (IQR) 50, 76). Of the 195 episodes of infections, the most common source was genitourinary tract (15.4%). Overall, the median TTP was 17 hours (IQR 11.5, 24.5), the shortest TTP was observed in
Conclusions
TTP varied depends upon the pathogens and clinical settings. However, bacteria were isolated from almost, but not all of the blood cultures within 3 days of incubation.