Antimicrobial Resistanceamong Intensive Care Unit Patients in A Tertiary Care Hospital of Bangladesh

Background: Antimicrobial resistance is a growing concern specially among the critically ill patients who are often treated by multiple antibiotics. But, the data regarding the pattern of antimicrobial resistance in this population are often insufficient. Objective: To observe the pattern of antimicrobial resistance among the patients admitted into the intensive care unit (ICU). Methodology: This prospective observational study was carried out in the ICU of a tertiary care hospital of Bangladesh over 6 months. Samples of blood, urine, tracheal aspirate, wound swab and pus were obtained from the patients, cultured and analyzed. Results: Among 100 subjects, the most common primary diagnoses were aspiration pneumonia (29%) and urinary tract infection (UTI) (24%). Out of 315 samples, microorganisms were isolated from 125 samples (39.68%). The most common sample yielding positive culture was tracheal aspirate (67.2%), and the most frequently isolated microorganisms were Pseudomonas spp. (35%), Escherichia coli (28%), Acinetobacterspp. (24%) andKlebsiellaspp. (18%). Acinetobacterspp., Pseudomonasspp. and Klebsiellaspp.were the commonest resistant organisms. Overall prevalence of resistance to antibiotics were: ceftriaxone 72%, ceftazidime 78.4%, ciprofloxacin 81.6%, gentamicin 84%, meropenem 49.6% andnetilmicin 39.2%. Meropenem was the most sensitive antibiotic against Klebsiellaspp.(66.67%) but Acinetobacterspp.was still resistant to meropenem and amikacin but sensitive to cotrimoxazole (66.67%). Multidrug resistant Pseudomonas, Acinetobacter and, Klebsiella species were found; piperacillin-tazobactam combination showed <40% resistance against them. No single antibiotic showed good efficacy against Acinetobacterspp. Conclusion: The prevalence of antibiotic resistance is high among the ICU patients, and the majority of the isolated organisms are resistant to conventional antibiotics. Bangladesh J Medicine January 2021; 32(1) : 5-11

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A Prevalence Study on Bacteriological Profile and Antimicrobial Resistance of Bacterial Isolates from Medical Intensive Care Unit in a Tertiary Care Hospital

International Journal of Current Microbiology and Applied Sciences ◽

10.20546/ijcmas.2020.901.242 ◽

2020 ◽

Vol 9 (1) ◽

pp. 2128-2134

Author(s):

M. A. Ashiha Begum ◽

R. Shanthi ◽

Jeya mathi

Keyword(s):

Intensive Care Unit ◽

Intensive Care ◽

Antimicrobial Resistance ◽

Tertiary Care Hospital ◽

Medical Intensive Care Unit ◽

Tertiary Care ◽

Care Hospital ◽

Bacterial Isolates ◽

Bacteriological Profile ◽

Medical Intensive Care

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Association of Biofilm Formation with Antimicrobial Resistance Among the Acinetobacter Species in A Tertiary Care Hospital in Bangladesh

Journal of Medicine ◽

10.3329/jom.v14i1.14533 ◽

2013 ◽

Vol 14 (1) ◽

pp. 28-32 ◽

Cited By ~ 2

Author(s):

Azizun Nahar ◽

Shaheda Anwar ◽

Md. Ruhul Amin Miah

Keyword(s):

Intensive Care Unit ◽

Intensive Care ◽

Antimicrobial Resistance ◽

Biofilm Formation ◽

Tertiary Care ◽

Multidrug Resistant ◽

Clinical Isolates ◽

Clinical Samples ◽

Care Hospital ◽

Acinetobacter Species

Purpose: The purpose of this study was to detect biofilm formation in clinical isolates of Acinetobacter species and to observe correlation between biofilm formation and antimicrobial resistance among Acinetobacter isolates. Methods: Two hundred fifty six clinical samples collected from patients who were admitted in Intensive Care Unit (ICU) and on device, patients from Surgery, Medicine, Gynae & Obs and Urology department of Bangabandhu Sheikh Mujib Medical University (BSMMU) and from Burn unit of Dhaka Medical College Hospital were included in this study. Biofilm formation and antibiotyping were performed for the isolates of Acinetobacter species recovered from clinical samples including tracheal aspirates, blood, urine, wound swab, pus, throat swab, endotracheal tubes, burn samples, ascitic fluid, sputum, aural swab, oral swab, cerebrospinal fluid, and catheter tip. Correlation of biofilm formation with antimicrobial resistance pattern among Acinetobacter isolates were also observed in this study. Result: A total of 256 various specimens were studied of which 95 Intensive Care Unit (ICU) and 161 Non ICU samples. Out of 95 ICU and 161 Non ICU samples, Acinetobacter species were isolated from 32 (33.7%) and 20(12.4%) respectively. From 32 ICU and 20 Non ICU Acinetobacter isolates, 28 (87.5%) and 11 (55%) were biofilm producers. Biofilm forming capacity of Acinetobacter species was significantly (p<0.008) greater in ICU than in Non ICU isolates. In both ICU and Non ICU isolates, biofilm forming Acinetobacter species were 100% resistant to amoxicillin, ceftriaxone, ceftazidime, cefotaxime, cefuroxime, and aztreonam. Resistance to antibiotics such as gentamicin, amikacin, netilmicin, ciprofloxacin and imipenem was higher among biofilm forming Acinetobacter isolates in ICU than Non ICU isolates. Susceptibility to colistin was 100% in Non ICU isolates but in ICU it showed 7.1% resistance. Conclusions: This investigation showed that most of the clinical isolates of Acinetobacter species were biofilm producers especially from ICU samples and they were multidrug resistant. Even polymixin resistant Acinetobacter isolates are slowly emerging. This is very alerming for us that biofilm forming multidrug resistant Acinetobacter species represents a severe threat in the treatment of hospitalized patients. So, antibiotic policy and guidelines are essential to eliminate major outbreak in future.DOI: http://dx.doi.org/10.3329/jom.v14i1.14533 J MEDICINE 2013; 14 : 28-32

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