Abstract：
BACKGROUND:Few studies have assessed the time to blood culture positivity as a predictor of clinical outcome in fungal bloodstream infections (BSIs). The purpose of this study was to evaluate the time to positivity (TTP) of blood cultures in patients with Candida albicans BSIs and to assess its impact on clinical outcome. METHODS:A historical cohort study with 89 adults patients with C. albicans BSIs. TTP was defined as the time between the start of incubation and the time that the automated alert signal indicating growth in the culture bottle sounded. RESULTS:Patients with BSIs and TTPs of culture of ≤ 36 h (n=39) and >36 h (n=50) were compared. Septic shock occurred in 46.2% of patients with TTPs of ≤ 36 h and in 40.0% of patients with TTP of >36 h (p=0.56). A central venous catheter source was more common with a BSI TTP of ≤ 36 h (p=0.04). Univariate analysis revealed that APACHE II score ≥ 20 at BSI onset, the development of at least one organ system failure (respiratory, cardiovascular, renal, hematologic, or hepatic), SOFA at BSI onset, SAPS II at BSI onset, and time to positivity were associated with death. By using logistic regression analysis, the only independent predictor of death was time to positivity (1.04; 95% CI, 1.0-1.1, p=0.035), with the chance of the patient with C. albicans BSI dying increasing 4.0% every hour prior to culture positivity. CONCLUSION:A longer time to positivity was associated with a higher mortality for Candida albicans BSIs; therefore, initiating empiric treatment with antifungals may improve outcomes.
journal_name
BMC Infect Disjournal_title
BMC infectious diseasesauthors
Nunes CZ,Marra AR,Edmond MB,da Silva Victor E,Pereira CAdoi
10.1186/1471-2334-13-486subject
Has Abstractpub_date
2013-10-20 00:00:00pages
486issn
1471-2334pii
1471-2334-13-486journal_volume
13pub_type
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