Showing 3 results for Enterobacter
Karimi Shahidi Sm, Dabbagh Mohammady A, Iravani B, ,
Volume 60, Issue 1 (4-2002)
Abstract
Sepsis is one of the most critical medical emergency situations. Treatment with anti microbial drugs should be initiated as soon as samples of blood and other relevant sites have been cultured. Available information about patterns of anti microbial Susceptibility among bacterial isolates from the community, the hospital, and the patient should be taken in to account. It is important, pending culture results, to initiate empirical anti microbial therapy.
Materials and methods: In a descriptive study during 3 years (1377-1379), microbial and anti microbial susceptibility patterns evaluated in Amir alam clinical laboratory on 2000 specimen of blood culture received from 765 hospitalized patients at Amir Alam hospital wards.
Results: 113 specimens from 77 patient (10 percent) were positive for microbial growth. Enterobacter, S. aureus, S.epidermidis, Pneumococci, Ecoli, and Pseudomonas were the most common isolated etiologic agents(80 percent) . The most common organism was Entenobacter in 1377, S.aureus in 1378 and pseudomonas in 1379 There were significant change in patlern of organisms, increase resistance to some important available antibiotics and change in antibiotic susceptibility pattern during three years (disc diffusion method).
Conclusions: According to Results of this study due to change in pattern of organism and their antibiotic susceptibility, dynamic microbiological study provide important data for Ordering empirical and culture oriented treatment of patients with bacteremia, Sepsis, anti microbial Chemotherapy, anti microbial susceptibility empirical anti microbial therapy, microbial pattern.
Mirsalehian.a, Nakhjavani.f, Peymani.a, Jabalameli.f, Mirafshar.s M, Hamidian.m,
Volume 65, Issue 1 (3-2008)
Abstract
Background: The incidence of ESBL producing species have been steadily increased in
recent years, resulting in limitation of infection control issues and therapeutic
options.The purpose of this study was to evaluate prevalence of Enterobacteriaceae and
also assess epidemiology ESBL producing strains isolated from patients admitted in
ICUs.
Methods: A total of one hundred fifty isolates were collected from urine, sputum, blood,
wound and other clinical samples from patient admitted in ICU and then were identified
by biochemical tests .All of the samples were screened by DAD method according to The
NCCLS Guideline. The species that met NCCLS screening criteria was further tested for
Clavulanic Acid effect by confirmatory method.
Results: A total of one hundred fifty isolates,133(89.3%) were found to be resistant at
least on of the indicators cephalosporin tested according to NCCLS Guideline.
121(80.6%) of the isolates were resistant to all the indicators tested .89(59.3) isolateds
were confirmed as ESBL producers. The number of isolates ESBL producing was as
follow: Klebsiella pneumoniae 33 (76.74%), E.coli 20 (60.60%), Enterobacter cloacae 8
(47.05%), Citrobacter diversus 6 (54.54%), Enterobacter aerogenes 7 (53.84%),
Citrobacter freundii 4 (40%), Klebsiella oxytoca 6 (62.5%), Proteus mirabilis 4 (50%),
Serratia marcescens 2 (40%), Proteus Volgaris 0%.All of the isolates sensitive to
imipenem.
Conclusion: The present study shows high prevalence of ESBL producing
Enterobacteriaceae from patients admitted in ICU .The increased rate of these species in
most cases due to the administration of inadequate and irrational antimicrobial therapy
.To overcome this problem, it needs to develop new antimicrobial agents, limiting the
Unnecessary Use of antimicrobial and increasing compliance with infection control
issues.
Rahbar Mohammad, Azimi Leila, Mohammad-Zadeh Monaaranak, Alinejad Faranak, Soleymanzadeh Somayeh, Sattarzadeh Mahboobeh, Rastegar Lari Abdolaziz,
Volume 70, Issue 3 (6-2012)
Abstract
Background: The increasing use of β-lactam antibiotics in clinics for the treatment of different bacterial infections since early 1980s has led to increased rates of resistant bacteria isolated from patients. One of the problems in the treatment of nosocomial infections is related to resistant bacteria such as Enterobacter cloacae due to cross resistance through extended-spectrum beta-lactamase production. The aim of this study was to determine the prevalence of extended-spectrum beta-lactamase producing E. cloacae from different clinical specimens collected from hospitalized patients.
Methods: In the present study, 101 E. cloacae confirmed by standard specific microbiologic tests were collected from different specimens in Milad and Motahri hospitals in Tehran, Iran during February 2010 and September 2011. Antibiotic susceptibility tests were conducted according to the process recommended by the Clinical and Laboratory Standards Institute for 13 antibiotics of choice. Extended-spectrum beta-lactamase producing strains were screened for by combined disk method as a phenotypic diagnostic test.
Results: From a total of 101 E. cloacae, 33 (33%) were shown to produce extended-spectrum beta-lactamase by phenotypic tests 5% of the bacteria were resistant to imipenem too.
Conclusion: This study clearly showed the high prevalence of resistance to broad-spectrum beta-lactam antibiotics in the isolated E. cloacae among which 5% were multi drug resistant. All the isolated E. cloacae were susceptible to Colistin. These results can be alarming for physicians treating resistant E. cloacae infections, especially extended-spectrum beta-lactamase producing species.
