2018, Cilt 48, Sayı 2, Sayfa(lar) 130-133 |
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Evaluation of Methicillin Sensitive and Methicillin Resistant Staphylococcus aureus in Nasal Swab Specimens in İzmir Tepecik Training and Research Hospital |
Pınar ŞAMLIOĞLU1, Arzu BAYRAM1, Sevgi YILMAZ HANCI1, Neval AĞUŞ1, Yeşer KARACA DERİCİ1, Mümtaz Cem ŞİRİN2, Güliz DOĞAN1, Nisel YILMAZ1 |
1Sağlık Bilimleri Üniversitesi, İzmir Tepecik Eğitim ve Araştırma Hastanesi Mikrobiyoloji Laboratuvarı, İzmir 2Süleyman Demirel Üniversitesi Tıp Fakültesi, Tıbbi Mikrobiyoloji Anabilim Dalı, Isparta |
Keywords: Methicillin resistance, MRSA, MSSA, nasal swab, Staphylococcus aureus |
Objective: It is aimed to retrospectively investigate the rate of
Staphylococcus aureus isolates and their methicillin susceptibilities
in nasal swab samples sent to the microbiology laboratory of our
hospital from different outpatient clinics, and services.
Material and Methods: A total of 1373 nasal swab samples sent to the
Microbiology Laboratory from Clinics, and Outpatient Clinics of
İzmir Tepecik Training and Research Hospital between January 1,
2013 and December 31, 2014 and were incubated for 24 hours at
37°C after inoculation to 5% sheep bloody agar for cultivation.
Bacterial growth were evaluated for colony morphology and bacterial
colonies suspected to be S. aureus were typed by conventional
methods (Gram stain, catalase test, coagulase test) and positive
colonies were interpreted as S. aureus. These isolates were tested for
susceptibility to methicillin by Kirby-Bauer disc diffusion method on
Muller Hinton agar according to CLSI standards.
Results: S. aureus was grown in 112 (8.2%) of the evaluated
samples, of which 101 (90.2%) were identified as methicillin
susceptible S. aureus (MSSA) and 11 (9.8%) as methicillin -
resistant S. aureus (MRSA). Hudred and three (92%) samples were
obtained from outpatient clinics and 8% (n=9) of them from
services. MRSA was detected in six of the samples obtained from the
services, five of them belonged to intensive care unit patients and
one of them to an organ transplantation unit patient.
Conclusion: In our study, nasal, S. aureus carriage was found in
8.2% of the samples. S. aureus is an important pathogen in terms
of hospital-acquired and community-acquired infections. Although
MSSAs are more prevalent in outpatient clinics and the MRSAs in
inpatient clinics, the overall detection rates in both are very close
to each other. Identification and treatment of methicillin resistance
in S. aureus strains colonized in intensive care units will prevent
serious infections that might occur.
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