scholarly journals Study of prevalence and antimicrobial susceptibility pattern of blood culture isolates from a tertiary care hospital of North India

2018 ◽  
Vol 6 (12) ◽  
pp. 4046 ◽  
Author(s):  
Asifa Nazir ◽  
Ifshana Sana ◽  
Bushra Yousuf Peerzada ◽  
Tabindah Farooq
Keyword(s):  
Blood Culture ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Bloodstream Infections ◽  
Blood Cultures ◽  
Care Hospital ◽  
Bacterial Isolates ◽  
Gram Positive ◽  
Gram Negative ◽  
Culture Positive

Background: Bacterial bloodstream infections (BSIs) are important causes of morbidity and mortality world-wide. The choice of antimicrobial therapy for bloodstream infections is often empirical and based on the knowledge of local antimicrobial activity profiles of the most common bacteria causing such infections. The objective of the study was to determine the pattern of bacterial isolates from the blood cultures in a teaching hospital and determine their antibiotic resistance and provide guidelines for choosing an effective antibiotic therapy in cases of septicaemia.Methods: The etiological and antimicrobial susceptibility profile of blood cultures over a period of one year at a tertiary care hospital was studied. Blood culture positive isolates were identified by BacT/Alert3D, an automated blood culture system, while as identification of the isolates from these samples and their antimicrobial sensitivity testing was performed with Vitek2 Compact.Results: There were 2231 blood culture samples, of which 565 (25.3%) were identified to be culture positive. Out of 565 positive cultures, 447 (79.1%) showed bacterial growth; Gram positive were 306 (54.2%) and Gram negative were 141 (24.9%). Candida species were isolated from 118 (20.9%) of positive samples. The most frequently identified Gram-positive bacteria were Coagulase-negative staphylococci 208 (67.9%) and the most common Gram-negative isolates were Acinetobacter species 89 (63.1%). The most sensitive drugs for gram-positive isolates were vancomycin, and linezolid while as gram-negative isolates showed 100% sensitivity to colistin and tigecycline.Conclusions: This study reveals a significant prevalence of bacterial isolates in blood and it highlights the need for periodic surveillance of etiologic agent and antibiotic susceptibility to prevent further emergence and spread of resistant bacterial pathogens.

scholarly journals Microbiological Screening and Antimicrobial Sensitivity Profiling of Wound Infections in a Tertiary Care Hospital of Bangladesh

2020 ◽  
pp. 101-106
Keyword(s):  
Wound Infection ◽  
Primary Care Physicians ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Treatment Modalities ◽  
Care Hospital ◽  
Bacterial Isolates ◽  
Gram Positive ◽  
Gram Negative ◽  
Antimicrobial Sensitivity

Wound infection is a major problem in hospitals in developing countries. Wound infection causes morbidity and prolonged hospital stay thus this prospective study was conducted for a period of seven months (January 2019 to July 2019). A total of 217 specimens (wound swabs and pus exudates) from wound infected patients in a Tertiary Care Hospital in Bangladesh. A retrospective study of the microbiological evaluation was done by cultural growth as well as Gram staining and biochemical examination to identify the bacterial isolates. Finally, the antimicrobial vulnerability testing was performed by Kirby-Bauer disc diffusion conventional method. A total of 295 samples were tested. Out of which 217 (73.5%) were found culture positive. E. coli was the most predominant gram-negative isolates whereas Staphylococcus aureus and Coagulase-negative Staphylococcus were the most commonly isolated gram-positive organisms. Antimicrobial sensitivity profile of bacterial isolates revealed imipenem, meropenem, amikacin, and nitrofurantoin to be the most effective antimicrobials against gram-negative isolates, whereas imipenem, meropenem, amikacin, nitrofurantoin, amoxiclav, and gentamicin were the most effective drugs against gram-positive isolates. The result of this examination contributes to the identification of basic causative microbes involved in wound infection and findings of antibiotic susceptibility patterns can be helpful for primary care physicians to optimize the treatment modalities, articulate policies for empiric antimicrobial therapy, and to minimize the rate of infection among wound infected patients.

scholarly journals A comparative study of bloodstream infections in acute myeloid leukemia according to different phases of treatment: Can we predict the organism?

2017 ◽  
Vol 06 (03) ◽  
pp. 132-133
Author(s):  
Preetam Kalaskar ◽  
Asha Anand ◽  
Harsha Panchal ◽  
Apurva Patel ◽  
Sonia Parikh ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Blood Culture ◽  
Myeloid Leukemia ◽  
Bloodstream Infections ◽  
Blood Cultures ◽  
Consolidation Therapy ◽  
Gram Positive ◽  
Gram Negative ◽  
Culture Positive ◽  
Acute Myeloid

Abstract Introduction: The treatment of acute myeloid leukemia (AML) consists of induction therapy with anthracyclines and cytarabine followed by two to four cycles of consolidation therapy with high-dose cytarabine after achieving remission. There have been very few studies comparing infections during induction and consolidation. We have analyzed blood cultures of patients with AML during episodes of fever occurring during induction and consolidation, for comparing the bloodstream infections in both the phases. Materials and Methods: Blood cultures of patients during febrile episodes were collected from central venous catheters and peripheral blood, both during induction and consolidation therapy of AML. Results: The study population included 52 AML patients. During induction, there were 52 episodes of fever and 25 (48%) blood cultures were positive, 15 of these blood cultures reported Gram-negative organisms, 9 reported Gram-positive organisms and 1 as yeast. During consolidation, 47 episodes of fever were recorded and blood cultures were positive in 12, of which 7 were Gram-negative, 5 were Gram-positive. Conclusion: The incidence of blood culture positive infections during therapy of AML at our center was higher. The predominant organism isolated was Gram-negative both during induction and consolidation. The incidence of blood culture positive infections had decreased by 50% during consolidation.

INCIDENCE OF DRUG RESISTANCE AMONG BACTERIAL ISOLATES OBTAINED IN A TERTIARY CARE HOSPITAL

2021 ◽  
pp. 67-69
Author(s):  
A.P. More ◽  
J.D. Andhale
Keyword(s):  
Drug Resistance ◽  
Antibiotic Susceptibility ◽  
Tertiary Care Hospital ◽  
Bacterial Pathogens ◽  
Tertiary Care ◽  
Gram Negative Bacteria ◽  
Care Hospital ◽  
Bacterial Isolates ◽  
Gram Positive ◽  
Gram Negative

Introduction: Infections caused by Gram negative bacteria is major health threat to patients in intensive care units and to patients with some comorbidity. Constant surveillance of drug-resistance among the different bacterial pathogens is important in prevention and management of infections caused by these pathogens. Such type of study also help clinicians to prescribe correct drug regimen to the patients suffering from these infections which may be primary, secondary or nosocomial, reducing the morbidity, mortality and hospitalization period. The present study is undertaken to study the drug susceptibility pattern and its incidence among the different bacterial pathogens isolated from different clinical samples obtained at Tertiary Care Hospital. Materials and Methods: The samples received from different clinical units were subjected to bacteriological investigations using standard microbiological procedures. The isolated pure cultures of bacterial pathogens were subjected to antibiotic susceptibility testing as per the CLSI guidelines of 2016. The data of antibiotic susceptibility of each isolated pathogens were tabulated and prevalence of each drug resistance and multidrug resistance were determined to study the trends of drug resistance among these pathogens. Results: The incidence of infections caused by Gram negative bacteria was found to be 74.67% among all the isolates and that of Gram positive bacterial infections was found to be 25.33% respectively. Esch.coli (37.32%) was the most frequently isolated Gram negative bacterium followed by Ps. aeruginosa, Klebsiella spp., Acinetobacter spp. and Proteus spp.in the descending order among all the isolates of Gram positive and Gram negative isolates. Conclusion: The incidence of infections caused by Gram negative bacteria was higher than those caused by Gram positive bacteria. Esch.coli was the most common pathogen among the Gram negative bacterial isolates whereas Staph.aureus was the most common pathogen among all the Gram positive bacterial isolates. All the bacterial isolates showed 100% multi-drug resistance and the incidence of drug resistance to second generation penicillin and cephalosporins were found to be remarkably higher among all the bacterial isolates.

scholarly journals Asymptomatic Bacteriuria among Pregnant Women Attending Tertiary Care Hospital in Lucknow, India

2021 ◽  
pp. 1-8
Author(s):  
Naimshree Sonkar ◽  
Malay Banerjee ◽  
Suman Gupta ◽  
Absar Ahmad
Keyword(s):  
Haemoglobin Level ◽  
Pregnant Women ◽  
Antimicrobial Susceptibility ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Asymptomatic Bacteriuria ◽  
Care Hospital ◽  
Gram Positive ◽  
Gram Negative ◽  
E Coli

Introduction: Asymptomatic bacteriuria (ASB) is the presence of actively multiplying bacteria within the urinary tract with absence of any symptoms, resulting in adverse pregnancy outcomes. This research study was done in order to review prevalence, antimicrobial susceptibility profile, and factors associated with ASB occurring in female patients who are pregnant and being treated at a tertiary care hospital in Lucknow, India. Method and Materials: This is a cross-sectional study done among 216 pregnant women attending a hospital for antenatal check-ups. Clean catch midstream urine samples were collected and examined microscopically, and semi-quantitative culture was done on blood agar and MacConkey agar. Isolates were identified by colony morphology and biochemical tests, and antimicrobial susceptibility testing was done by using the Kirby-Bauer method. Results: Of the 216 pregnant women, 36 (16.7%) tested positive for ASB. The female gestational period, haemoglobin level, and BMI were significantly associated with ASB. Logistic regression also showed that higher haemoglobin level was less likely to ASB (AOR = 0.42, 95% confidence interval: 0.202–0.88, p = 0.021). The predominant and usual isolates were E. coli (n = 22, 61.1%), followed by Cons (n = 6, 16.7%), and S. aureus (3, 8.3%). All Gram-negative isolates were mostly sensitive to most of the drugs like piperacillin-tazobactam, cefepime, nitrofurantoin, and meropenem but were 100% resistant to ampicillin. Similarly, Gram-positive isolates were sensitive to ampicillin, vancomycin, linezolid, and nitrofurantoin but 100% resistant to co-trimoxazole. Conclusion: The present study shows the existence of ASB was 16.7% among women who are pregnant. Pregnancy duration, haemoglobin level, and BMI were significantly associated with ASB. The isolates identified more frequently were E. coli (61.16%), Cons (16.7%), and S. aureus (8.3%). All isolates which were Gram-negative were mostly sensitive to most of the drugs but were 100% resistant to ampicillin. Similarly, Gram-positive isolates were sensitive to most of the drugs but 100% resistant to co-trimoxazole.

scholarly journals Antimicrobial Resistance Patterns of Bacterial Isolates from Blood Culture among HIV/AIDS Patients at Felege Hiwot Referral Hospital, Northwest Ethiopia

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Mohabaw Jemal ◽  
Teshiwal Deress ◽  
Teshome Belachew ◽  
Yesuf Adem
Keyword(s):  
Antimicrobial Resistance ◽  
Blood Culture ◽  
Agar Plate ◽  
Blood Cultures ◽  
Resistant Bacteria ◽  
Bacterial Isolates ◽  
Aids Patients ◽  
Gram Positive ◽  
Gram Negative ◽  
Hiv Aids

Background. The emergence and spread of antimicrobial resistance in bacteria is recognized as a global public health problem. Bloodstream infection with antimicrobial-resistant bacteria in HIV/AIDS patients makes the problem more challenging. So, regular and periodic diagnosis and use of the appropriate antimicrobial susceptibility pattern determination is the only option for decreasing the prevalence and development of drug-resistant bacteria. Methods. An institution-based cross-sectional study was conducted among 384 HIV/AIDS patients. Sociodemographic data of patients were recorded using structured questionnaires. Blood cultures were collected with BACTEC aerobic blood culture bottles. A pair of samples was collected from each patient aseptically and incubated at 37°. If samples are positive for bacterial agents, they were subcultured to solid media such as blood agar plate, chocolate agar plate, and MacConkey agar plates. Identification was performed using colony characteristics and standard biochemical techniques. The antimicrobial susceptibility test was determined by the Kirby–Bauer disc diffusion method. Data entry and analysis were performed while using SPSS version 20. Descriptive statistics were performed to calculate frequencies. Results. Altogether, 384 patients were included, and 123 blood cultures were positive, so that the yield was thus 32%. About 46 (37.4%) of Gram-negative and 77 (62.6%) of Gram-positive bacterial species were identified. Among Gram-negative bacterial isolates, K. pneumoniae was the leading pathogen, 19 (41.3%), whereas S. aureus, 38 (49.4%), was predominant among Gram-positive isolates. In his study, the majority of Gram-positive isolates showed high level of resistance to penicillin, 72 (95.5%), tetracycline, 55 (71.4%), and cotrimoxazole, 45 (58.4%). About 28 (73.6%) of S. aureus isolates were also methicillin-resistant. Gram-negative bacterial isolates also showed a high resistance to ampicillin (91.3%), tetracycline (91.3%), and gentamicin (47.8%). Overall, about 78% of multidrug resistance was observed. Conclusion. Several pathogens were resistant to greater than five antimicrobial agents, so that proper management of patients with bacteremia is needed, and a careful selection of effective antibiotics should be practiced.

scholarly journals Epidemiology and microbiology of Gram-negative bloodstream infections in a tertiary-care hospital in Beijing, China: a 9 -year retrospective study

2020 ◽  
Author(s):  
Zhixin Liang ◽  
Qiang Zhu ◽  
Minghui Zhu ◽  
Chunyan Li ◽  
Lina Li ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Klebsiella Pneumoniae ◽  
Acinetobacter Baumannii ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Bloodstream Infections ◽  
Care Hospital ◽  
Gram Negative ◽  
Resistance Rates ◽  
Beijing China

Abstract Background Gram-negative bacterial bloodstream infections (BSIs) are serious diseases associated with high morbidity and mortality. The following study examines the incidence, clinical characteristics and microbiological features, drug resistance situations and mortality associated with gram-negative BSIs at a large Chinese tertiary-care hospital in Beijing, China. Methods A retrospective cohort study of patients with gram-negative BSIs was performed between January 1, 2010, and December 31, 2018, at the Chinese People's Liberation Army General Hospital. The patients’ data were collected and included in the reviewing electronic medical records. Results A total of 6867 episodes of gram-negative BSIs occurred among 3199 patients over 9 years, and there were 3032 significant BSI episodes 77% of these cases were healthcare-associated, while 23% were community-associated. The overall incidence of gram-negative BSIs fluctuated from 2.30 to 2.55 episodes per 1000 admissions over 9 years. Malignancy was the most common comorbidity and indwelling central intravenous catheter was the most common predisposing factor for gram-negative BSI. Escherichia coli were the major pathogen (34.3%), followed by Klebsiella pneumoniae (23.3%) and other bacterial pathogens (9.9%). The resistance rates of Escherichia coli and Klebsiella pneumoniae to penicillins were more than 90%. and the resistance rates of Acinetobacter baumannii to the most antibiotic were more than 70% include the Carbapenem. The resistance of ESBLs-producing Escherichia coli to the most antibiotic was higher than non-ESBLs producing Escherichia coli but to Carbapenems(0.7% VS 5.1%). The rates of Carbapenems resistance of ESBLs-producing Klebsiella pneumoniae and non-ESBLs producing Klebsiella pneumoniae were 32.8% and 8.1%. The rates of Carbapenems resistance of Enterobacter cloacae and Pseudomonas aeruginosa were 1.4% and 27.8% respectively. Between 2010 and 2018, the overall mortality of gram-negative BSIs decreased from 11.41–9.05%(X2 = 6.95, P = 0.434). Moreover, the mortality in the ICU decreased from 27.03–14.93%(X2 = 9.61, P = 0.212), while in the general ward fluctuated from 8.85–8.13% that without obvious decrease change(X2 = 9.29, P = 0.232). Conclusions The mortality of gram-negative BSIs have showed downward trends. carbapenem antibiotics is still consider the best treatment for patients with Gram-negative BSIs except Acinetobacter baumannii.

scholarly journals Blood culture positive sepsis and sensitivity pattern in a tertiary care neonatal centre in eastern India

2019 ◽  
Vol 6 (2) ◽  
pp. 487
Author(s):  
Soumini Rath ◽  
Santosh Kumar Panda ◽  
Manas Kumar Nayak ◽  
Deepti Damayanty Pradhan
Keyword(s):  
Blood Culture ◽  
Neonatal Sepsis ◽  
Early Onset ◽  
Tertiary Care ◽  
Neonatal Care ◽  
Care Practice ◽  
Klebsiella Pneumonia ◽  
Gram Positive ◽  
Gram Negative ◽  
Culture Positive

Background: The objective of this study is to evaluate sensitive pattern of causative organisms of neonatal sepsis with its clinical outcome in a tertiary neonatal care unit of eastern India.Methods: This retrospective observational cohort study was done in a tertiary care hospital of Odisha. All the blood culture positive neonatal sepsis cases, excluding neonates with multiple congenital malformations, diagnosed during January 2017 to December 2018 were analysed using descriptive summary statistics.Results: A total of 73 neonatal sepsis cases were diagnosed by BacT/Alert and VITEK-2 blood culture method. Among them, 50 (68%) babies had gram negative sepsis,14 (19%) cases of gram-positive sepsis and nine (13%) cases of fungal sepsis. In present study 38 (52%) cases were early onset sepsis, 38(52 %) babies were term, 55(75%) were male and 44 (60%) babies were out born. Klebsiella pneumonia and Acinetobacter were the most common organism in early onset and late onset sepsis respectively. Among gram negative organism (GNB), 66% were multi drug resistant. A fifty percent of gram-negative organism were sensitive to meropenem and 28% were sensitive to piperacillin/tazobactam. The sensitivity of GNB to colistin, ciprofloxacin, amikacin was 76%, 64% and 56% respectively. The sensitivity of gram-positive organisms to linezolid, vancomycin, teicoplanin and penicillin were 92%, 85%,85% and 20% respectively. Survival rate among culture positive sepsis was 83%.Conclusions: Multi drug organisms are emerging in modern neonatal care practice. Practice of antibiotic stewardship may save the babies from multidrug resistance organism in future.

scholarly journals Correlation between Vancomycin MIC Values and Those of Other Agents against Gram-Positive Bacteria among Patients with Bloodstream Infections Caused by Methicillin-Resistant Staphylococcus aureus

2009 ◽  
Vol 53 (12) ◽  
pp. 5141-5144 ◽  
Author(s):  
N. Patel ◽  
P. Lubanski ◽  
S. Ferro ◽  
M. Bonafede ◽  
S. Harrington ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Bloodstream Infections ◽  
Care Hospital ◽  
Gram Positive ◽  
Methicillin Resistant ◽  
Gram Positive Bacteria ◽  
Included Patient

ABSTRACT An increase in the distribution of vancomycin MIC values among methicillin (meticillin)-resistant Staphylococcus aureus (MRSA) isolates has been noted. It is postulated that the shift in vancomycin MIC values may be associated with a concurrent rise in the MIC values of other anti-MRSA agents. Scant data are available on the correlation between vancomycin MIC values and the MIC values of other anti-MRSA agents. This study examined the correlation between vancomycin MIC values and the MIC values of daptomycin, linezolid, tigecycline, and teicoplanin among 120 patients with bloodstream infections caused by MRSA at a tertiary care hospital between January 2005 and May 2007. For each included patient, the MIC values of the antibiotics under study were determined by the Etest method and were separated into the following two categories: day 1 (index) and post-day 1 (subsequent). For subsequent isolates, the MIC values for each antibiotic from the post-day 1 terminal isolate were used. Among the index isolates, there was a significant correlation (P value, <0.01) between the MIC values for vancomycin and daptomycin and between the MIC values for vancomycin and teicoplanin. The MIC values for daptomycin were significantly correlated with linezolid, tigecycline, and teicoplanin MIC values. Among the 48 patients with subsequent isolates, vancomycin MIC values were significantly correlated with MIC values for daptomycin, linezolid, and teicoplanin (ρ value of ≥0.38 for all comparisons). This study documented an association between vancomycin MIC values and the MIC values of other anti-MRSA antibiotics among patients with bloodstream infections caused by MRSA primarily treated with vancomycin.

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