RESUMO
Purpose: Wound swab cultures are frequently requested from patients suspected of having a wound infection. The quality of the sample should also be evaluated by performing a Gram-stained microscopic examination. "Q-scoring system" is not widely used and the literature on the subject is limited. Methods: A total of 4648 wound swab samples were evaluated. Samples with a Q-score of "0" were considered as "poor quality samples", and those with a score of " ≥ 1" were classified as "good quality samples". Microorganisms grown in the culture of samples that scored above one were identified by mass spectrometry, and antimicrobial susceptibility testing was performed. Results: Gram stain results were found to be consistent with the culture result in 57.10% (n = 1078) of and inconsistent with the culture result in 42.90% (n = 813) of the samples. The number of samples with Q-scores one, two, and three among the 813 samples was 62, 29, and 722, respectively. The value observed in Q3 was found to be statistically significantly higher than the values observed in Q1 and Q2 (p < 0.05). Samples sent from surgical departments (61.92%) with a Q-score of ≥ 1, were statistically significant compared to internal medicine departments (p < 0.0001). There was no significant difference between samples sent from intensive care units and those sent from other inpatient services. For both groups with Q-scores ≥ 1 and "0" similar microorganisms were identified. Conclusion: As a conclusion, the Q-scoring system will provide a common language between the laboratory and the clinic, especially by standardizing the evaluation of wound swab samples.
RESUMO
Aims: The emergence of multidrug-resistant and carbapenem-resistant Klebsiella pneumoniae has became a major public health threat. In this study, we describe the characteristics of isolates coproducing KPC and NDM-1 carbapenemases from patients hospitalized at an emergency unit in Ankara, Turkey, between January and August 2018. The isolates were characterized by antibiogram susceptibility, carbapenemase and extended-spectrum beta-lactamase production, plasmid-mediated colistin (COL) resistance, and high-level aminoglycoside resistance. Pulsed field gel electrophoresis (PFGE), sequencing, wzi typing, multilocus sequence typing, and plasmid analysis were used to investigate the epidemiological relationship between the isolates. Results: All isolates were found to be resistant to amoxicillin-clavulanic acid, piperacillin-tazobactam, cefotaxime, cefoxitin, cefuroxime, ceftazidime, cefepime, imipenem, meropenem, ertapenem, amikacin, gentamicin, ciprofloxacin, levofloxacin, and trimethoprim-sulfamethoxazole. The minimum inhibitory concentration values for imipenem, meropenem, and ertapenem were >32 µg/mL, and >256 µg/mL for amikacin and gentamicin, and two isolates were found to be susceptible to both tigecycline and COL. All strains were positive for SHV, CTX-M, and rmtC, and negative for mcr-1 genes. A/C and FIIAS plasmids were found in all isolates. All isolates had the same PFGE pattern: wzi type 93 and ST15. Conclusion: Here, we have documented the characteristics of KPC- and NDM-1-coproducing isolates that harbored SHV, CTX-M, and rmtC and were typed as wzi 93 and ST15. We conclude that continuous monitoring of carbapenemases for unusual carbapenemase production is crucial to prevent the spread of these powerful isolates.
