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Early assessment of blood culture negativity as a potential support tool for antimicrobial stewardship.


ABSTRACT:

Objective

To assess whether 48-h negative blood culture (BC) bottles are still negative at the classic 120-h incubation endpoint and whether 48 h might be the time to make antimicrobial therapy decisions.

Methods

Data from the first collected bottles from bloodstream infection (BSI) episodes of single patients were retrospectively analyzed. Probabilities of bottles being negative at the classic endpoint were calculated from 0 to 120 h of incubation.

Results

Among BC-negative episodes (4018/4901 [82.0%]), most (2097/4018 (52.2%) occurred in medicine patients. At 48 h, probability was 100.0% (95% CI, 99.9-100.0) for all 4018 patients. Of these, 1244 (31.0%) patients remained on antibiotics until 120 h. Excluding 401 (32.2%) patients who received antibiotics for another (non-bloodstream) infection, 843 (67.8%) of 1244 patients could have merited early (48-h) discontinuation of antibiotics. Stopping treatment in these patients would have led to saving 5201 days of access (943 [18.1%] days), watch (3624 [69.7%] days), or reserve (634 [12.2%]) AWaRe groups' antibiotics, which correspond to 65.6% (5201/7928) of days of administered antibiotics in all 1244 patients.

Conclusion

As an early indicator of BC negativity, the 48-h endpoint could reliably support antimicrobial stewardship, but the clinical judgment remains imperative especially when BSI is highly suspected.

SUBMITTER: Menchinelli G 

PROVIDER: S-EPMC10958360 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Early assessment of blood culture negativity as a potential support tool for antimicrobial stewardship.

Menchinelli Giulia G   Oliveti Alice A   Fiori Barbara B   D'Inzeo Tiziana T   Spanu Teresa T   Murri Rita R   Fantoni Massimo M   Sanguinetti Maurizio M   Posteraro Brunella B   De Angelis Giulia G  

Heliyon 20240314 6


<h4>Objective</h4>To assess whether 48-h negative blood culture (BC) bottles are still negative at the classic 120-h incubation endpoint and whether 48 h might be the time to make antimicrobial therapy decisions.<h4>Methods</h4>Data from the first collected bottles from bloodstream infection (BSI) episodes of single patients were retrospectively analyzed. Probabilities of bottles being negative at the classic endpoint were calculated from 0 to 120 h of incubation.<h4>Results</h4>Among BC-negativ  ...[more]

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