scholarly journals Activities of a Nitrofurazone-Containing Urinary Catheter and a Silver Hydrogel Catheter against Multidrug-Resistant Bacteria Characteristic of Catheter-Associated Urinary Tract Infection

1999 ◽  
Vol 43 (12) ◽  
pp. 2990-2995 ◽  
Author(s):  
James R. Johnson ◽  
Parissa Delavari ◽  
Miguel Azar

ABSTRACT The in vitro inhibitory activity of a nitrofurazone-coated urinary catheter (NFC) against 86 recently obtained susceptible and multidrug-resistant (MDR) clinical isolates of Escherichia coli, Klebsiella pneumoniae, Citrobacter freundii, Staphylococcus aureus, coagulase-negativestaphylococci, and Enterococcus faecium, which are species implicated in catheter-associated urinary tract infection and which traditionally have been susceptible to nitrofuran derivatives, was determined using an agar diffusion assay. In a subset of these strains, the activity of the NFC was compared with that of a silver hydrogel urinary catheter (SHC), and the durability of each catheter’s inhibitory activity was assessed during serial daily transfers of catheter segments to fresh culture plates. Except for vancomycin-resistant E. faecium, the NFC was active against all isolates tested and showed comparable inhibition zones with susceptible and MDR strains of each species. In contrast, the SHC inhibited only certain staphylococci (P < 0.01 versus the NFC), and among these strains, the SHC produced smaller inhibition zones than did the NFC (P < 0.01). Inhibition was evident for up to 5 days with the NFC, but for only 1 day (if at all) with the SHC (P < 0.01). These data document that, for most genera which traditionally have been susceptible to nitrofuran derivatives, the NFC remains active against contemporary MDR isolates. They also demonstrate that the in vitro antibacterial activity of the NFC is markedly superior to that of the SHC in several respects. Thus, the NFC shows promise for clinical use in the current era of MDR bacteria.

2015 ◽  
Vol 3 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Tek Raj Awasthi ◽  
Narayan Dutt Pant ◽  
Puspa Raj Dahal

Involvement of multidrug resistant bacteria in causing community acquired infection is very serious public health issue. The main objective of our study was to determine the prevalence of multidrug resistant bacteria in causing community acquired urinary tract infection. In this study we cultured the 384 mid stream urine samples collected aseptically from the patients attending outpatient department of Seti zonal hospital and having no past history of hospitalization. The organisms isolated were identified by using conventional biochemical tests and antimicrobial susceptibility testing was performed by Kirby Bauer disc diffusion technique. Out of total 384 samples 98 (25.52%) samples showed significant bacterial growth. The most prevalent bacterium isolated was Escherichia coli. 42.86% of the bacteria isolated were found to be multidrug resistant (MDR). The involvement of such large numbers of multidrug resistant bacteria in causing community acquired urinary tract infection is very serious issue and cannot be neglected. And some abrupt initiatives should be taken by the responsible authorities to improve or at least avoid the further worsening of the situation.Nepal Journal of Biotechnology. Dec. 2015 Vol. 3, No. 1: 55-59


2018 ◽  
Vol 3 (4) ◽  

Objective: determine the frequency of urinary tract infections associated with MDR bacteria, characteristics patients with such infections and the mortality rate associated in Hospital ISSSTECALI during 2015-2016. Design: Descriptive, observational, analytic, transversal Methods: We collected data from clinical files of each patient that had been diagnosed with a urinary tract infection and had an uroculture of 10x105 CFU of bacteria with a multidrug-resistant profile. It included, gender, age, comorbidities, predisposing risk factors, obtained isolation, sensibility pattern, days of stay and proper technique of culture. We calculated frequencies and rates. Results: During January 2015- November 2016 a total of 2401 urocultures were solicited, we isolated bacteria in 123 of them (5.12%). 94 urocultures were included, 71% of the cultures were from women with a median age of 68.14 years; comorbidities: Hypertension (50%), diabetes (41.5%), chronic renal disease (14.9%), history of stroke and bed-rest. An average of 14.15 days of stay was calculated. They all had a urinary catheter. Of the total of urocultures obtained, 54 urocultures demonstrated bacteria growth with a MDR phenotype (attack rate: 0.43 cases/1000 discharges) Escherichia coli was isolated in 26 (48.14%) cultures; Pseudomona aeruginosa 7.4%; and Klebsiella pneumonia 5.5%; its mechanism of resistance was calculated according to the reported phenotype on the antimicrobiogram, demonstrating resistance to more than two family of antibiotics. A mortality rate of 21.3% was calculated of which the direct cause was related to the infective process (rate: 0.23 deaths/1000 discharges). Conclusion: the isolation of bacteria with a multidrug-resistant profile is not very common; however, they generate a high morbimortality index and a great weight in resources to our unit. Recommendations: reinforcement of programs that encourage rational use of antibiotics as well as the control of nosocomial infections should be employed in the hospital.


2021 ◽  
Vol 20 (1) ◽  
pp. 87-93
Author(s):  
Nazmul Ahsan ◽  
Monzilur Rahman ◽  
Md Nazrul Islam ◽  
Anwarul Azim Akhand

Multidrug-resistant (MDR) organisms are spreading widely and becoming an issue of utmost importance to deal with. In the current study, ten urine samples from diabetic patients suffering from multiple complications, including urinary tract infection (UTI) and nephropathy were investigated. Antibiogram assays of the bacterial isolates from collected samples demonstrated resistance against most of the antibiotics tested. Further studies were conducted to determine the types of resistant bacteria that caused UTI. Analyzing the 16S rDNA sequence and phylogenetic tree, 3 isolates were identified as Escherichia coli, 5 as Klebsiella pneumoniae and the rest 2 as Enterobacter asburiae. The findings of this research indicate the necessity of urgent attention to find an effective alternative drug for treating infections caused by these resistant isolates. Dhaka Univ. J. Pharm. Sci. 20(1): 87-93, 2021 (June)


2018 ◽  
pp. 1037-1042 ◽  
Author(s):  
Manisha Punia ◽  
Ashok Kumar ◽  
Gaurav Charaya ◽  
Tarun Kumar

Aim: This study aims to determine the etiology of urinary tract infection (UTI) in dogs and to develop an antibiogram of organisms isolated. Materials and Methods: Urine samples were collected either through catheterization or cystocentesis from 35 dogs suspected of UTI admitted to VCC, LUVAS, Hisar. Bacteria were identified on the basis of cultural characteristics in 22 samples, and all the isolates were subjected to in vitro antimicrobial sensitivity testing. Results: The urine samples found positive for bacteria yielded pure colony growth in 77.27% and mixed growth in 22.73% samples, respectively. Escherichia coli (29.62%) and Streptococcus spp. (29.62%) were the most prevalent microorganisms followed by Staphylococcus spp. (22.22%), Klebsiella spp. (11.11%), Pseudomonas spp. (3.7%), and Bacillus spp. (3.7%). Overall, maximum sensitivity of isolates was found toward ceftriaxone/tazobactam (88.88%) and least toward amoxicillin and cloxacillin (29.62%). Conclusion: E. coli and Streptococcus spp. were the most predominant bacteria isolated from UTI affected dogs. In vitro sensitivity revealed a significant proportion of bacteria to be multidrug resistant. Keywords: antibiogram, multidrug resistance, Escherichia coli, Staphylococci, Streptococci.


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