Antimicrobial resistance of coagulase-positive <em>Staphylococcus</em> in lesion microbial cultures of children from Las Tunas

Abstract

Background: to keep an updated knowledge on bacterial resistance in health services is a research problem faced by the health institutions. Coagulase-positive Staphylococcus is the commonest lesion microbial culture.

Objective: to determine the microbiological pattern of antimicrobial resistance of Coagulase-positive Staphylococcus as the germ most frequently isolated in lesion bacteriological cultures, in the laboratory of the “Mártires de Las Tunas” Pediatric Hospital, from January to September 2016.

Methods: an observational, cross-sectional, descriptive study of all the lesion bacteriological cultures, performed on patients who were attended to at the aforementioned institution and during the period herein declared, was carried out. The following variables were assessed: culture positivity, isolated germs and antimicrobial resistance of Coagulase-positive Staphylococcus. The data were processed using descriptive statistics.

Results: 589 lesion bacteriological cultures were positive, for 77,80 %; the most frequently isolated germs 757 bacteriological cultures of the lesion were analyzed, 589 positives, the most frequently isolated germs were Coagulase-positive Staphylococci, followed by Streptococcus pyogenes, for 81,32 %, and 13,58 % respectively. There was a high resistance to penicillin (92,48 %), oxacillin (89,56 %), ampicillin (87,68 %) and amoxicillin (85,17 %). On the other hand, co-trimoxazole and ciprofloxacin, with 5,42 %, and tetracycline, with 3,54 % showed the lowest resistance.

Conclusions: the study showed evidence of high antibacterial resistance of Coagulase-positive Staphylococcus to the antibiotics mostly used for lesion bacteriological cultures. These results should be considered at the time of indicating antibacterial treatment.