scholarly journals Bacterial Causes and their Antimicrobial Susceptibility Testing among Urinary Tract Infection Patients in Tobruk Area, Libya

2021 ◽  
Vol 36 (4) ◽  
pp. 253-262
Author(s):  
Mohammed T. Mostafa ◽  
Khalid S. Mustafa ◽  
Brijesh Kumar

Urinary tract infections are very common among people of all ages, but the disease is more prevalent in women, so proper clinical and laboratory diagnosis, and the right treatment are very important to avoid complications and antimicrobial resistance. This study aimed to determine the bacterial causes and antibiotic susceptibility patterns of UTI patients. Recorded results of 6065 urine sample cultures and their antimicrobial susceptibility tests from the Department of Microbiology in Tobruk Medical Center, Tobruk City, were obtained from September 2016 to December 2018. The data was analyzed and discussed in compare with other studies. The study showed that a UTI is more common in females (78.8%) compared with male patients (21.2%). Gram-negative bacteria accounted for the majority of urinary pathogens (90%), where E. coli alone was (58.4%), klebsiellae (17.4%), Proteus (10.7%), while Pseudomonas species was the least common (3.3%) of the total. While the Gram-positive bacteria S. aureus constituted 9.6% of the total. The study was found statistically significant (P=0.000). The most effective antibiotics against all uropathogens were Imipenem and Amikacin, and less effective antibiotics were Ampicillin and Amoxicillin-clavulanic acid. This study concluded that the most common cause of UTI in Tobruk was Escherichia coli and the most effective antibiotics appear to be Imipenem and Amikacin.

1989 ◽  
Vol 102 (3) ◽  
pp. 413-419 ◽  
Author(s):  
J.A.G. Melo Cristino ◽  
A. Torres Pereira ◽  
L.G. Andrade

SUMMARYA group of 150Staphylococcus saprophyticusstrains isolated from urinary tract infections in women were included in this study. Antimicrobial susceptibility tests showed that these isolates were sensitive to most antimicrobial agents. All strains were sensitive to penicillin. cephalothin. gentamicin. kanamvcin. trimethoprim and nitrofurantoin. Resistance to tetracycline was present in 10·6% of the strains. to chioramphenicol in 4 % to erythromycin in 1·3% and to streptomvcin in 1·3% All strains were resistant to cadmium chloride as well as to novobioein and nalidixic acid. Plasmid analysis showed that 8·2 % of the strains harboured plasmids, some of them with complex plasmid profiles.


Author(s):  
Falah Hasan Obayes AL-Khikani

Around the world, there is no population clear from urinary tract infection (UTI), particularly among women. UTI is considered the most predominant bacterial infection. This study aimed to detect the incidence of the most common major uropathogens in patients severe from urinary tract infection with antibiotic sensitivity tests that assist urologist doctors for appropriate antimicrobial empirical therapy.Methods: This study was carried in a private laboratory in Babil city, Iraq from May 2019 to May 2020. Totally 70 individuals suffering from clear symptoms of UTI, as well as, 20 healthy persons participated in this study as a control group. Then, the standard microbiological methods carried out to isolate and identify bacterial species. Antimicrobial susceptibility tests were performed using different antimicrobial discs by applying the Kirby–Bauer disc diffusion method.Results: Totally, 90 specimens were obtained from them 20 control group, 19 with no growth, and 51 patients with bacterial growth distributed as 43 (83%) females and 8 (17%) males. E. coli were the most common predominant organisms. All isolates were showed a high rate of resistance to evaluated cephalosporins 100% and 82% to cefotaxime and ceftriaxone respectively, while very low resistance recorded in Aminoglycosides 20% and 13% to Gentamicin and amikacin respectively. Most age group infected with UTI was 21-40 years old.Conclusion: The current study showed an increasing burden of urinary tract infection caused by various bacteria implicated in UTI that causes changeable sensitivity to various antimicrobial agents. Therefore, in clinical use appropriate medications should be selected based on the data obtained from antimicrobial susceptibility tests.


2019 ◽  
Vol 13 (2) ◽  
pp. 70-73 ◽  
Author(s):  
Alp Tuna Beksac ◽  
Gokcen Orgul ◽  
Atakan Tanacan ◽  
Hasan Uckan ◽  
Banu Sancak ◽  
...  

Background and Objectives: Our aim is to identify uropathogens that cause urinary tract infections (UTIs) that necessitate hospitalization, and analyze outcomes of gestational UTIs. Methods: This study consisted of 30 pregnant women who necessitate hospitalization because of UTI (7.8% of gestational UTIs during the same period of time). UTI that necessitates hospitalization is defined as clinical complaints, urination problems, urine analysis and culture positivity, fever and uterine discomfort. Patients with at least two positive cultures (≥ 100,000 cfu/ml) were included to this study. Antimicrobial susceptibility tests were obtained in all cases in order to determine antimicrobial resistance and to choose the ideal antibiotics for treatment. Results: In our study, we have found that Escherichia coli is the most common microorganism (56.7%). Enterococcus faecalis (13.3%) and Klebsiella pneumonia (10%) were other frequently observed microorganisms. In this series, mean gestational week at birth was 35 weeks 5 days (range 23-40 weeks). Mean birthweight was 2,656 g (range 500-3,700 g). Twenty-three cases (76.7%) were hospitalized before 37th gestational week and preterm delivery rate was 56.3%. Maternal risk factors and coexisting diseases were detected in 11 (36.7%) patients as follows: diabetes mellitus in 4, thrombophilia in 3, thyroid disorders in 3 and hydroureteronephrosis in 1 case. Cesarean section rate was 65.2%. Conclusions: Knowing uropathogens of patient population is beneficial in the management of patients and better planning of future medical treatments. Preterm labor seems to be an important complication in pregnancies with UTIs going together with fever and urination problems.


2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S581-S581
Author(s):  
Andrew Beckley ◽  
Erik S Wright

Abstract Background Antimicrobial susceptibility tests (ASTs) are routinely performed on pathogens isolated from clinical samples. ASTs are used by clinicians to select the most appropriate treatment for antibiotic-resistant microorganisms. In aggregate, ASTs offer insight into the rise and spread of antibiotic resistance across hospitals. Here, we used ASTs to identify patterns of antibiotic resistance across drugs and microorganisms. Methods We conducted a retrospective analysis of 364,813 AST results from the University of Pittsburgh Medical Center from 2015 to 2018. Data regarding infection site, hospital laboratory testing, organism identification, and antibiotic susceptibilities were extracted from the laboratory information system and anonymized prior to use. The pathogens studied included Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii, Staphylococcus aureus, Proteus mirabilis, and Enterococcus faecalis. Results We identified 21 antibiotic-pathogen combinations where resistance was found in less than 1% of AST results. Concordant susceptibility results of levofloxacin and ciprofloxacin occurred the most frequently among antibiotic pairs. Additionally, concordant susceptibility results were more common within antibiotics belonging to the same antibiotic class than between classes. P. aeruginosa had the highest rate of overall concordant results with concordance occurring within all -lactam classes. In contrast, K. pneumoniae and P. mirabilis showed the least concordance, suggesting that their resistance profiles are less predictable. Notably, we did not identify any pairs of antibiotics that strongly exhibited discordant susceptibility results regardless of the microorganism. Conclusion Using routinely collected clinical microbiological data, we were able to characterize pathogen-antibiotic combinations where resistance is rarely seen. Additionally, we identified pairs of antibiotics that frequently exhibited concordance susceptibilities both within and between classes. Lastly, we were unable to find evidence of discordant susceptibility results, indicating that more clinical research is needed to determine the efficacy of collateral sensitivity treatment techniques. Disclosures All authors: No reported disclosures.


1987 ◽  
Vol 8 (4) ◽  
pp. 151-157 ◽  
Author(s):  
Douglas S. Wakefield ◽  
Michael Pfaller ◽  
R. Michael Massanari ◽  
Glenn T. Hammons

AbstractA survey of 162 Veterans Administration Medical Center (VAMC) laboratories performing antimicrobial susceptibility testing was performed to determine variation in reported rates of methicillin-resistant Staphylococcus aureus (MRSA) isolation by geographic location and hospital characteristics. Of the 162 VAMC laboratories surveyed, 136 (84%) provided usable data. The percentage of S aureus isolates reported as resistant to methicillin ranged from 0% to 52% with a mean value of 10% among the 136 survey respondents. MRSA were isolated in every VA Medical District and 96% of all respondent laboratories reported isolating at least one MRSA isolate during the preceding year. These data are considered an underestimate of the time MRSA rate in the VA system due to the fact that many laboratories failed to follow key methodologic guidelines for optimal detection of MRSA. A positive correlation was found between MRSA isolation rate and several measures of hospital size and activity including total beds, total admissions, and total antimicrobial susceptibility tests performed. Geographic clustering of MRSA isolation was observed with distinct areas of very high and very low percentages of S aureus isolates reported as MRSA. The data suggest that the geographic distribution of MRSA within the VA system should be monitored closely for evidence of spread from areas with high-MRSA rates to areas of mid- or low-MRSA rates. Evidence of increased MRSA isolation within these areas may necessitate increased caution in patient referral and transfer patterns within the VA system.


2016 ◽  
Vol 23 (01) ◽  
pp. 010-014
Author(s):  
Muhammad Usman Anjum ◽  
Muhammad Safdar Khan ◽  
Abdul Razzaq Shahid ◽  
Syed Humayun Shah

Background: Urinary tract infections (UTIs) constitute important bacterialdisease which contributes to significant morbidity world-wide. Empirical treatment in patientssuffering from UTI depends upon the local knowledge of common microorganisms responsiblefor UTI in that geographical area as well as their antimicrobial susceptibility patterns.Objectives: To determine the frequency and antimicrobial susceptibility of uropathogenswhich are responsible for urinary tract infections. Study Design: Experimental study. Setting:Department of Pathology, Frontier Medical & Dental College and Mohi Ud Din Islamic MedicalCollege. Period: January 2015 to June 2015. Material & methods: Total of 113 patients wereincluded in the study. Urine samples were cultured on MacConkey’s agar and Cysteine LactoseElectrolyte Deficient (CLED) agar. Micro-organisms were identified using standard tests andantimicrobial susceptibility was checked using modified Kirby Bauer method following Clinicaland Laboratory Standards Institute (CLSI) guidelines. Results: The average age of patientswas 32.19±16.47 years. Gram negative organisms accounted for majority of cases, about 89(78.76%) cases. Escherichia coli was the most common micro-organism which was found in50 (44.24%) cases followed by Staphylococcus aureus in 24 (21.24%), Enterobacter spp. in19 (16.81%), Klebsiella spp. in 11 (9.73%) and Proteus spp. in 9 (7.96%) cases. E. coli wassensitive to imipenem and ciprofloxacin and was resistant to amoxicillin/clavulanic acid andgentamicin. Conclusion: Gram negative organisms are largely responsible for UTIs and E. colibeing the most common etiological agent. E. coli is sensitive to commonly prescribed drugs forUTI like ciprofloxacin.


2016 ◽  
Vol 54 (9) ◽  
pp. 2233-2242 ◽  
Author(s):  
Christopher D. Doern ◽  
Susan E. Richardson

Urinary tract infections (UTIs) are a common occurrence in children. The management and laboratory diagnosis of these infections pose unique challenges that are not encountered in adults. Important factors, such as specimen collection, urinalysis interpretation, culture thresholds, and antimicrobial susceptibility testing, require special consideration in children and will be discussed in detail in the following review.


2021 ◽  
Vol 9 (2) ◽  
pp. 271
Author(s):  
Yuarn-Jang Lee ◽  
Chih-Hung Huang ◽  
Noor Andryan Ilsan ◽  
I-Hui Lee ◽  
Tzu-Wen Huang

Urinary tract infections (UTIs) are common in clinics and hospitals and are associated with a high economic burden. Enterobacterium Klebsiella pneumoniae is a prevalent agent causing UTIs. A high prevalence of carbapenem-resistant K. pneumoniae (CRKP) has emerged recently and is continuing to increase. Seventeen urinary CRKP isolates collected at a teaching hospital in Taiwan from December 2016 to September 2017 were analyzed to elucidate their drug resistance mechanisms. Two-thirds of the isolates were obtained from outpatients. Antimicrobial susceptibility tests demonstrated multidrug resistance in all the isolates. Multilocus sequence typing analysis showed high diversity among the isolates. PCR analysis demonstrated the presence of carbapenemases in three isolates. All isolates carried at least one other extended-spectrum β-lactamase, including TEM, DHA, and CTX-M. Fifteen isolates contained mutations in one of the outer membrane porins that were assessed. The expression levels of the acrB and/or oqxB efflux pump genes, as determined by qRT-PCR, were upregulated in 11 isolates. Six isolates might have utilized other efflux pumps or antimicrobial resistance mechanisms. These analyses demonstrated a highly diverse population and the presence of complex resistance mechanisms in urinary isolates of K. pneumoniae.


Sign in / Sign up

Export Citation Format

Share Document