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Year : 2017  |  Volume : 9  |  Issue : 3  |  Page : 102-107

Time to positivity and antibiotic sensitivity of neonatal blood cultures

Department of Microbiology and Immunology, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt

Correspondence Address:
Sarah Magdy Abdelhamid
Department of Microbiology and Immunology, Faculty of Pharmacy, Damanhour University, Gomhoreya Street, Damanhour
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jgid.jgid_1_17

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Background: Sepsis is a commonly encountered and potentially life-threatening problem in neonatal intensive care units, blood culture of neonatal sepsis helps in either optimizing treatment or terminating antibiotics. Materials and Methods: We determined the causative agent, time to positivity (TTP), and antibiogram of neonatal blood cultures collected in a tertiary care center, to investigate difference between early- and late-onset neonatal sepsis and to establish the time at which a blood culture could safely be considered negative, using the BacT/ALERT® 3D 60. A total of 826 clinically suspected neonates suffering from sepsis and admitted to a neonatal intensive care unit of a tertiary care hospital, Alexandria, Egypt were included in this study. Results: Eighty-five (10.29%) showed positive results. The overall TTP median was 21.1 h. Out of the 85 positive cultures, 57 (67.06%) were Gram-positive, 15 (17.65%) were Gram-negative, and 13 (15.29%) were fungi (all Candida). Coagulase-negative staphylococci were the predominant organism (41.18%). All the Gram-positive pathogenic isolates were sensitive to vancomycin and tigecycline. Among the Gram-negative isolates, maximum antibiotic sensitivity was observed for levofloxacin. Conclusion: We conclude that more than 3 days of incubation may not be required when using the BacT/ALERT® 3D 60 system.

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2008 Journal of Global Infectious Diseases | Published by Wolters Kluwer - Medknow
Online since 10th December, 2008