Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

01 November 2006

Antibiotic-resistance patterns and frequency of extended-spectrum b-lactamase-producing isolates of Klebsiella pneumoniae in Tehran

Mohammad Mehdi Feizabadi, Gelavizh Etemadi, Davood Yadegarinia, Marveh Rahmati, Shiveh Shabanpoor, Saeed Bokaei

Med Sci Monit 2006; 12(11): BR362-365 :: ID: 484684


Background: Extended-spectrum b-lactamase (ESBL)-producing strains of Klebsiella pneumoniae have caused major therapeutic problems worldwide since the majority are resistant to various antibiotics. In this study, an investigation was conducted regarding antibiotic-resistant patterns of 128 isolates of K. pneumoniae cultured from Iranian patients at two teaching hospitals during 2004-2005.
Material/Methods: The susceptibility of isolates to 21 antimicrobial agents was determined using the disk diffusion method. Disks containing ceftazidime, cefotaxime, ceftazidime/clavulanic acid, and cefotaxime/clavulanic
acid were used in the phenotypic confi rmatory (PCT) method to detect ESBL isolates. A comparison between the confi rmatory method and double-disk synergy test (aztreonam, ceftazidime, ceftriaxone, cefotaxime, and amoxicillin/clavulanic acid) was also made to assign the appropriate
method of detection for ESBLs. The E-test was used to determine the susceptibility of isolates to cefepime.
Results: All strains were susceptible to imipenem and meropenem. Resistance to ciprofl oxacin and gentamicin were found in 37% (n=47) and 33% (n=42) of isolates, respectively. Production of ESBL was detected in 44.5% of isolates. Resistance to cefepime was found in 40% of isolates.
Conclusions: The prevalence of ESBL strains in the study hospitals is high. The double-disk synergy method is not preferable in successfully detecting ESBL strains. More importantly, 33% of ESBL strains were also resistant to ciprofl oxacin and aminoglycosides. Based on the laboratory results, it is recommended that prescription of cephalosporins be restricted to susceptible isolates and that the usage of other effective antibiotics be considered.

Keywords: Anti-Infective Agents - pharmacology, Cephalosporins - pharmacology, Ciprofloxacin - pharmacology, Drug Evaluation, Preclinical, Drug Resistance, Bacterial, Gentamicins - pharmacology, Imipenem - pharmacology, Iran, Klebsiella pneumoniae - metabolism, Thienamycins - pharmacology, beta-Lactamases - metabolism

Add Comment 0 Comments

615 14


01 June 2023 : Editorial  

Editorial: Infectious Disease Surveillance Using Artificial Intelligence (AI) and its Role in Epidemic and Pandemic Preparedness

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.941209

Med Sci Monit 2023; 29:e941209


In Press

08 Jun 2023 : Clinical Research  

Risk Factors for New Vertebral Compression Fracture After Percutaneous Vertebral Augmentation: A Retrospect...

Med Sci Monit In Press; DOI: 10.12659/MSM.940134  

08 Jun 2023 : Clinical Research  

A Nomogram for Identifying HR+/Her2- Breast Cancer Patients with Positive Sentinel Lymph Nodes and Omitted ...

Med Sci Monit In Press; DOI: 10.12659/MSM.940124  

08 Jun 2023 : Clinical Research  

Burden of COVID-19 on Mental Health of Resident Doctors in Poland

Med Sci Monit In Press; DOI: 10.12659/MSM.940208  

08 Jun 2023 : Clinical Research  

Risk Prediction for Rapidly Progressive Interstitial Lung Disease in Anti-MDA5-Positive Dermatomyositis: Th...

Med Sci Monit In Press; DOI: 10.12659/MSM.940251  

Most Viewed Current Articles

13 Nov 2021 : Clinical Research  

Acceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...

DOI :10.12659/MSM.932788

Med Sci Monit 2021; 27:e932788


30 Dec 2021 : Clinical Research  

Retrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...

DOI :10.12659/MSM.935379

Med Sci Monit 2021; 27:e935379

08 Mar 2022 : Review article  

A Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...

DOI :10.12659/MSM.936292

Med Sci Monit 2022; 28:e936292

01 Jan 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...

DOI :10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750