| dc.description.abstract | Analysis of single positive blood culture is widely used in Sri Lanka in the diagnosis of
sepsis. There are only a few studies conducted regarding information on bacteria that
could give rise to sepsis and the probability of bacteria causing sepsis. Therefore, the aim
of this study was to identify bacteria that commonly give positive results for single positive
blood cultures and to study the incidence of bacteria giving positive results. A prospective
cross-sectional study was conducted at the Microbiology Laboratory, National Hospital of
Colombo, Sri Lanka. Patients (144) who had given positive results for blood cultures were
recruited from the 30th of October to the 31st of December 2022. The epidemiological
pro les (patient name, age, gender, BHT, disease conditions, and comorbidities) and the
results obtained for the blood cultures of patients were analyzed. Out of 144 positive blood
cultures, 58.3% and 41.7% were identi ed as Gram-positive bacteria and Gram-negative
bacteria respectively. Amongst Gram-positive bacteria, Methicillin-sensitive Staphylococcus
aureus (MSSA), Methicillin-resistant Staphylococcus aureus (MRSA) & Gram-positive bacilli
showed positive results, whilst coagulase-negative Staphylococci had given the highest
incidence (23.6%) of giving positive results on blood cultures. Amongst Gram-negative
bacteria, Escherichia coli, Pseudomonas aeruginosa, and Acinetobacter baumannii were
reported as common bacteria that give positive results on blood cultures. Klebsiella
pneumoniae had the highest incidence (11.8%) in the Gram-negative group. Therefore,
this study identi ed the most common bacterial species apart from contaminating skin
ora that cause blood culture positivity and the incidence of bacteria for blood culture
positivity. | en_US |
