Abstract
Blood culture is the gold standard for diagnosing bacteremia and direct the physicians to select appropriate antimicrobials. In hospitals, blood culture contamination (BCC) is a common problem that has a detrimental effect on patient outcomes. Hence, we implemented strategies in our tertiary care setup, for training phlebotomists and nurses in proper blood sampling techniques, and assessed their effectiveness in reducing BCC rates. This interventional study was conducted at the Indus Hospital, Karachi, Pakistan from 1st January 2021 to 30th June 2023. All blood cultures received from different departments of the hospital were included. The 2.5-year study period was divided into pre-intervention and intervention periods, with monthly monitoring of BCC. The BCC data between 1st January 2021 and 31st December 2021 was taken as the baseline pre-intervention period and the next 1.5 years comprised the intervention period (1st January 2022-30th June 2023). To improve compliance, various strategies were implemented, such as regular training sessions, didactic sessions, and re-competencies. A total of 86 774 Blood cultures were received from all departments of the hospital, out of which n = 30 672 were received in the pre-intervention period whereas, n = 56 102 were received in the intervention period. Mean BCC rate in the pre-intervention period was found to be 4.6%. However, after the implementation of different measures to reduce BCC, the contamination rate decreased to a mean of 3.1% by the end of the intervention period. Emergency department accounted for the highest proportion of BCC in the pre-intervention and intervention periods. We decreased BCC in our tertiary care setup by implementing a simple and inexpensive collaborative intervention, and came to the conclusion that the higher incidence of BCC was probably caused by factors unique to the emergency department and provided measures to successfully address them.
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