Laboratory Medicine ›› 2024, Vol. 39 ›› Issue (10): 993-998.DOI: 10.3969/j.issn.1673-8640.2024.10.011

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Application evaluation of 24 h satellite blood culture to improve pathogenic microorganism culture process in emergency

MA Yan, ZHOU Chunmei, HUANG Shenglei, WANG Beili, PAN Baishen, GUO Wei()   

  1. Department of Clinical Laboratory,Zhongshan Hospital,Fudan University,Shanghai 200032,China
  • Received:2023-10-19 Revised:2024-04-10 Online:2024-10-30 Published:2024-11-08

Abstract:

Objective To analyze the influence of 24 h satellite blood culture on the blood culture workflow of emergency microbiology laboratory. Methods The relevant laboratory data were collected from June 1,2020 to May 31,2021(the 1st stage) and June 1,2021 to May 31,2022(the 2nd stage) before and after the establishment of satellite blood culture in Zhongshan Hospital of Fudan University(18 208 and 2 810 sets). The differences of time-to-incubation(TTI),time-to-positivity(TTP),time-to-gram stain(TTG) and final report time [turn-around time(TAT)] were compared before and after satellite blood culture. Results The positive rates before and after satellite blood culture were 6.29%(1 146 /18 208) and 9.57%(269/2 810)(P<0.001). In the whole time,working time and non-working time,TTI,TTP and TAT after satellite blood culture were shorter than those before satellite blood culture(P<0.05). In particular,the non-working times were shortened by 3.78,7.76 and 16.18 h,respectively. After satellite blood culture,the TTP of Enterobacteriaceae and Staphylococcus were decreased by 1.93 h(P=0.014) and 6.59 h(P<0.001) compared with that before satellite blood culture,and the TAT of Enterobacteriaceae and Enterococcus were decreased by 8.13 h(P<0.05) and 6.53 h(P<0.05),respectively. Conclusions Setting satellite blood culture can improve the positive rate of blood culture,shorten TTI,TTP and TAT,and realize the optimization of blood culture process.

Key words: Blood culture, Emergency department, Turn-around time, Time-to-positivity, Time-to-gram stain

CLC Number: