scholarly journals Distribution of Microorganisms and Antibiotic Resistance of Gram Negative Bacteria Isolated from Urine Cultures of Intensive Care Unit Patients During the Last Four Years

2020 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Hakan İgan ◽  
Hayrunisa Hancı
Author(s):  
T.F. Stepanova ◽  
L.V. Kataeva ◽  
A.P. Rebeshchenko ◽  
Le Thanh Hai ◽  
Khu Thi Khanh Dung ◽  
...  

The results of studies of resistance to antibiotics microflora isolated from mucous pharynx and rectum of patients intensive care unit newborns of National Hospital of Pediatrics, Hanoi are presented. It is shown that gram-negative bacteria isolated from children have a high resistance to penicillins, cephalosporins and carbapenem. Antibiotic resistance of bacteria isolated from children receiving treatment in «pure» block did not differ from sustainability of the strains, selected from children in «dirty» block.


Author(s):  
Amit Bhatia ◽  
Juhi Kalra ◽  
Saurabh Kohli ◽  
Barnali Kakati ◽  
Reshma Kaushik

Background: Antimicrobials are a major class of drugs prescribed in Intensive Care Unit (ICU). Widespread use of empirical antibiotic therapy has facilitated the emergence of drug resistance, since empirical therapy is very often initiated at the outset, even before culture and sensitivity reports are available. The problem of drug resistance is on a rise, therefore, this study was planned to assess the drug resistance and sensitivity patterns of the blood isolates recovered from ICU.Methods: An observational- prospective study was conducted in the Tertiary care teaching hospital over a period of twelve months to assess antibiotic resistance and sensitivity pattern. A total of 104 consecutive patients receiving antibiotics in the ICU and having blood cultures with significant growth were included in the study. Blood sample was collected and after obtaining a culture growth, the identification and antimicrobial sensitivity testing was done.Results: Blood stream infection by Gram-negative bacteria (50.96%) was more common than Gram-positive bacteria (49.04%). Coagulase negative Staphylococci (CoNS) was the predominant single blood culture isolate (35.58%). Klebsiella pneumoniae (13.46%), Escherichia coli (12.50%), Acinetobacter baumannii complex (7.69%) were commonly isolated gram negative organisms. Gram positive isolates were resistant to beta lactams in maximum patients whereas Tigecycline, Linezolid, Daptomycin, Vancomycin, Nitrofurantoin and Teicoplanin were sensitive against them. Common gram negative isolates were sensitive to Colistin and Tigecycline but resistant to most of the antibiotics.Conclusions: A preponderance of gram negative bacteria over gram positive bacteria was noted with a higher degree of resistance to most of the first line antimicrobial agents. 


Author(s):  
Tram Anh Que

TÓM TẮT Đặt vấn đề: Viêm phổi liên quan thở máy là bệnh lý nhiễm khuẩn bệnh viện rất thường gặp trong đơn vị hồi sức tích cực. Có nhiều vi khuẩn gây viêm phổi liên quan thở máy, trong đó các vi khuẩn Gram âm không lên men như Acinetobacterbaumannii, Pseudomonasaeruginosa,.. là những vi khuẩn gây bệnh hàng đầu và có mức độ kháng kháng sinh cao. Phương pháp: Một nghiên cứu mô tả cắt ngang được thực hiện ở các chủng vi khuẩn Gram âm không lên men phân lập được từ các mẫu đờm của bệnh nhân thở máy trên 48 giờ điều trị tại các khoa Hồi sức tích cực - Ngoại khoa Bệnh viện Hữu nghị Đa khoa Nghệ An năm từ 1/2020 đến 6/2021. Kết quả: Phân lập được 120 chủng Vi khuẩn Gram âm không lên men, trong đó, Acinetobacter baumannii 85 chủng, Pseudomonas aeruginosa 31 chủng. Acinetobacter baumannii có mức độ đề kháng trên 70% với tất cả các kháng sinh thử nghiệm, trong đó kháng cao nhất với Ceftriaxone 96,9%. Pseudomonas aeriginosa kháng với tất cả các kháng sinh thử nghiệm, kháng cao nhất với Gentamycin 80,0%, kháng thấp nhất với Piperacillin/Tazobactam 32,3%. Kết luận: Vi khuẩn không lên men là những tác nhân chính gây viêm phổi liên quan thở máy, phổ biến nhất là Acinetobacter baumannii và Pseudomonas aeruginosa. Những vi khuẩn này kháng cao với các kháng sinh thử nghiệm, trong đó, A. baumannii kháng trên 70% các kháng sinh thử nghiệm, P. aeruginosa kháng tất cả kháng sinh thử nghiệm với mức độ khác nhau tử 32,3 - 80,0%. ABSTRACT ANTIBIOTIC RESISTANCE OF NON - FERMENTABLE GRAM - NEGATIVE BACTERIA CAUSING PNEUMONIA IN PATIENTS WITH MECHANICALLY VENTILATION Background: Ventilator - associated pneumonia is a very common nosocomial infection in the intensive care unit. Many bacteria cause ventilator - associated pneumonia, in which non - fermentative Gram - negative bacteria such as Acinetobacter baumannii, Pseudomonas aeruginosa, etc., are the leading pathogens and have high antibiotic resistance. Methods: A cross sectional descriptive study was conducted on non - fermentative bacteria strains causing ventilator - associated pneumonia which were isolated at the Surgical Intensive Care Unit Department of Nghe An General Friendship Hospital from January 2020 to June 2021. Results: A total of 120 strains of non - fermenting Gram - negative bacteria were isolated. Of these, 85 strains were Acinetobacter baumannii, 31 strains was Pseudomonas aeruginosa. Acinetobacter baumannii has a resistance rate of more than 70% with all tested antibiotics, of which the highest resistance is to Ceftriaxone 96.9%. Pseudomonas aeriginosa was resistant to all tested antibiotics, with the highest resistance to Gentamycin80.0%, the lowest resistance to Piperacillin/Tazobactam 32.3%. Conclusion: Non - fermentative bacteria are the main pathogens of ventilator - associated pneumonia. The most common pathogens were Acinetobacter baumannii and Pseudomonas aeruginosa. These bacteria were highly resistant to the tested antibiotics. In which, A. baumannii resisted over 70% of the tested antibiotics, and P. aeruginosa resisted all tested antibiotics with varying degrees from 32.3 to 80.0%. Keywords: Ventilation associated pneumonia, VAP, P. aeruginosa, A. baumannii.


2021 ◽  
Vol 05 (01) ◽  
pp. 012-017
Author(s):  
Sarvesh Pal Singh ◽  
Seshagiribabu Yagani ◽  
Shamsiya TP ◽  
Shivam Pandey ◽  
Manoj Kumar Sahu ◽  
...  

Abstract Background Based on the analysis of infections and antibiotic usage in the years 2013 and 2014, an evidence-based antibiotic protocol was developed and implemented in our cardiac surgical intensive care unit (CSICU). This study intends to study the impact of this new protocol on the sensitivity profiles of common gram-negative bacteria in our CSICU. Methods The medical records of patients who underwent cardiac surgery at our center, between January 2017 and December 2018, were reviewed and the incidence of different hospital-acquired bacteria and their antibiotic sensitivity profiles were recorded. The antibiotic-sensitivity profiles of common gram-negative bacteria, for the years 2017 and 2018, were compared with the published data of 2013 and 2014 from our department. Results There was a significant decrease in the incidence of Acinetobacter baumannii, Klebsiella pneumoniae, Escherichia coli, and Pseudomonas aeruginosa resistant to carbapenems during 2017 and 2018. The incidence of colistin-resistant A. baumannii and P. aeruginosa also decreased significantly in 2017 and 2018. A significant increase in the proportion of amikacin resistant A. baumannii and E. coli and A. baumannii resistant to B lactam/B lactamase inhibitors also occurred. Conclusion Antibiotic stewardship can reverse the antibiotic resistance of common gram-negative bacteria in the ICU.


Author(s):  
Masoum Khoshfetrat ◽  
Aliakbar Keykha ◽  
Morteza Sedaghatkia ◽  
Reza Farahmandrad ◽  
Mohammad Behnampour

Background: It is widely accepted that increased prevalence of antibiotic resistance of pathogens grown in the respiratory system in intensive care unit (ICU) patients is a very serious problem causing expansion of mortality. The most important strategy to prevent the occurrence and appropriate solution to control the antibiotic resistance is to thoroughly investigate the pattern of resistance in the studied ward. Therefore, the purpose of this study was to determine the antibiotic resistance pattern of organisms isolated from endotracheal tube secretions of patients admitted to ICU of Khatam-Al-Anbia Hospital at Zahedan in Iran. Methods: In the present retrospective and descriptive cross-sectional study, the medical records of patients hospitalized during 2013-2018 were included by census method and then selected based on inclusion criteria (n=1387). The required data, including age, gender, type of microorganism isolated from endotracheal tube cultures, antibiotic resistance and sensitivity, duration of intubation and cause of hospitalization, were recorded for each patient. Finally, the data were analyzed by descriptive statistics using SPSS 16 software. Results: Mean age of patients was 44.66 ± 21.39 years and mean duration of intubation was 17.96 ± 10.99 days. Stroke was the most common cause of hospitalization with a prevalence of 553 patients (49%). The prevalence of positive culture of endotracheal tube secretions was 1128 (81.3%) of which 71.5% were male (n=807) and 28.5% were female (n=321). The cultures of endotracheal tube secretions resulted in 933 (82.7%) gram-negative bacteria, 191 (16.9%) grampositive bacteria and 4 (0.4%) mixed isolates. The most prevalent gram-negative bacterium was Acinetobacter baumannii (37.2%) with the highest and lowest antibiotic resistance to Meropenem (95.1% resistance) and colistin (99.5% sensitivity), respectively. In addition, the most prevalent gram-positive bacterium was Staphylococcus epidermidis (50.3%) with the highest and lowest antibiotic resistance to Meropenem (85.7% resistance) and Vancomycin (92.2% sensitivity). Conclusion: The findings of the present study illustrate that there was widespread bacterial resistance to respiratory tract infections in our ICU patients. Due to the high sensitivity of gram-negative bacteria to colistin, the use of antibiotic combination with colistin in the control of pulmonary infections caused by these organisms can be a good choice. In addition, in the case of gram-positive bacteria, the highest sensitivity was to vancomycin; therefore, it can be the selective antibiotic to control infections caused by these bacteria.


Author(s):  
Ika Puspita Sari ◽  
Titik Nuryastuti ◽  
Djoko Wahyono

Objective: Multidrug-resistance (MDR) is defined as an acquired non-susceptibility to at least one agent in three or more antimicrobial categories. MDR can be caused by several factors, including the misuse of antibiotics.  Resistance to antibiotics still poses a global challenge, especially in Indonesia. This study aimed to identify patterns of MDR in Neonatal Intensive Care Unit (NICU) at the Central Java Hospital, during the period of January 2014 to December 2015.Methods: The study was conducted using a descriptive retrospective design. The research population comprised of 225 patients. Patient inclusion criteria were neonatal patients treated in NICU ward with infection diagnosis. All patients had culture and sensitivity examinations on their bloods. The culture and sensitivity examinations were performed by microbiology clinicians.Results: The most common infection type was sepsis (60%). The most common bacteria found in the blood specimen of patients in the NICU ward was Gram-negative bacteria with a 72% rate, the other was Gram-positive bacteria. Bacteria which infected patients include; Klebsiellapneumoniaessppneumoniae, Pseudomonas aeruginosa, Bulkholderiacepacia, Acinetobacterbaumannii, Enterobactercloacae ssp cloacae, Serratiamarcescens, Staphylococcus haemolyticusand Staphylococcus epidermidis. The research result showed that 97.8% MDR cases were reported in the NICU ward. Antibiotics which were still potent for all bacteria found in NICU patients were tigecycline, meropenem and ciprofloxacin (for Gram-negative bacteria) and tigecycline, linezolid, nitrofurantoin, moxifloksacin and vancomycin (for Gram-positive bacteria).Conclusion: A high percentage of MDR occurred in NICU patients. Sepsis is the most common diagnosis in NICU patients. The usage of third generation antibiotics should be limited and regulated systematically.   


Author(s):  
L.V. Kataeva ◽  
A.P. Rebeshchenko ◽  
T.F. Stepanova ◽  
O.V. Posoiuznykh ◽  
Le Thanh Hai ◽  
...  

We studied the microflora structure and resistance gathered from the biomaterial of patients and the environment objects of various departments at the National hospital of Pediatrics in Hanoi. 140 clinical samples of biomaterials from 74 patients treated in the intensive care unit, the infectious diseases and the gastroenterology departments were studied. A systematic approach including microbiological, epidemiological and statistical research methods was used in carrying out the study. Bacteria of the Enterobacteriaceae family (38.5 per cent) prevailed in the biomaterial of intensive care unit patients. Nonfermentative Gram-negative bacteria (46.5 per cent) occupied the leading positions in the infectious diseases department and Gram-positive bacteria (39.3 per cent) were in the gastroenterology department. Gram-positive flora (60.2 per cent in the intensive care unit and 50.7 per cent in the infectious diseases department) prevailed in the microflora structure gathered from hospital environment objects. We identified the prevalence of bacteria of the genus Enterobacteriaceae and non-fermentative Gram-negative bacteria with a wide spectrum of resistance in the departments of the National Hospital of Pediatrics.


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