scholarly journals A study on the bacterial isolates from blood cultures of a tertiary care hospital

2021 ◽  
Vol 7 (3) ◽  
pp. 171-174
Author(s):  
KMS Mohamed Ali ◽  
K Girija
Keyword(s):  
Tertiary Care ◽  
Bloodstream Infections ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Care Hospital ◽  
Bacterial Isolates ◽  
Tertiary Care Centre ◽  
Sensitivity Testing ◽  
Cross Sectional ◽  
Blood Samples

Blood stream infections are the most important and common cause of morbidity and mortality in tertiary care hospitals. Since the results are usually not available promptly a knowledge of epidemiologic and antimicrobial susceptibility pattern of blood pathogens is life saving and very useful for early treatment and recovery of patients. The aim of this study is to describe the epidemiological, bacterial profile and antimicrobial resistance pattern of bloodstream infections in a tertiary care centre.A prospective cross-sectional study was done on seven hundred and eight blood samples collected over a period of six months in the Microbiology laboratory. Blood samples collected under aseptic conditions were cultured by aerobic culture method. Identification of bacterial isolates were done using standard bacteriologic and biochemical testing methods and antibiotic sensitivity testing done by Kirby - Bauer disc diffusion method.Bacteria was isolated in 201 (28.3%) samples with highest rates among newborns 84(41.8%). The most frequent isolates were 111 (55.2%) followed by 49 (24.4%). Results showed high susceptibilities of CoNS 111 (100%) to Vancomycin, Linezolid and 51 (98%) to Meropenem. This study highlights the common prevalent bacteriological agents in bacteremia, their antibiotic susceptibility & resistance patterns. and multi drug resistant were the leading causes of septicaemia in our hospital with Vancomycin, Linezolid and Carbapenems the effective antibiotics against these pathogens respectively.

scholarly journals Ecology of Bloodstream Infections and Temporal Trends of Their Antibiograms with Respect to Source and Duration of Incubation: A 5-Year Retrospective Observational Analysis

2020 ◽  
Vol 12 (01) ◽  
pp. 56-67
Author(s):  
Amit Banik ◽  
Valarie W. Lyngdoh ◽  
Elantamilan Durairaj ◽  
Anil C. Phukan ◽  
Raghavendra Kotal
Keyword(s):  
Tertiary Care ◽  
Temporal Trends ◽  
Bloodstream Infections ◽  
Diffusion Method ◽  
Blood Collection ◽  
Care Hospital ◽  
Biochemical Tests ◽  
Sensitivity Testing ◽  
Disk Diffusion Method ◽  
Significant Difference

Abstract Purpose Blood is one of the most important connective tissues of human body. Bloodstream infection can range from inapparent bacteremia till fulminant septic shock with high mortality. Presence of microbes in blood whether continuously, intermittently, or transiently is a grave risk to every organ of body. Culture of blood is a vital tool to diagnose such infections. Drug susceptibility patterns help in rationalizing therapy. Objective The aim of the study is to perform bacteriological analysis and assess drug sensitivity patterns of blood culture isolates and compare in light of other associated variables. Design Retrospective observational study was conducted from January 2009 to December 2013 at a tertiary care hospital at Shillong, India. Blood samples were collected with aseptic guidelines and cultured for 7 days. Growths were identified by standard biochemical tests and subjected to sensitivity testing according to Modified Kirby Bauer disk diffusion method. Data for source of blood collection and duration of incubation were noted and compared. Results A total of 658 (11.2%) pathogens were isolated from 5,867 bacteremia-suspected patient blood specimens. Contamination was observed at the rate of 1.21%. Gram-negative organisms were the predominant pathogens recovered, Klebsiella pneumoniae being the most common. No significant difference was observed between the number of organisms isolated within or beyond 48 hours. Acinetobacter baumannii and K. pneumoniae have significantly higher chances (p < 0.05) of isolation from central line catheters compared with peripheral venipuncture. Conclusion Successful treatment of sepsis depends on early diagnosis and proper antimicrobial therapy. Local knowledge of bacteriological profile and antimicrobial sensitivity patterns helps rationalize empiric treatment strategies.

scholarly journals Bloodstream infections and trends of antimicrobial sensitivity patterns at Port Blair

2018 ◽  
Vol 10 (03) ◽  
pp. 332-337 ◽  
Author(s):  
Amit Banik ◽  
Sanjeev H. Bhat ◽  
Abhay Kumar ◽  
Agnijeet Palit ◽  
Kandregula Snehaa
Keyword(s):  
Tertiary Care ◽  
Bloodstream Infections ◽  
The Body ◽  
Diffusion Method ◽  
Blood Collection ◽  
Care Hospital ◽  
Biochemical Tests ◽  
Sensitivity Testing ◽  
Disk Diffusion Method ◽  
Antimicrobial Sensitivity

ABSTRACT PURPOSE: Bloodstream infection can range from inapparent bacteremia until fulminant septic shock with high mortality. Microorganisms present in circulating blood whether continuously, intermittently, or transiently are a threat to every organ in the body. Culture of blood is a vital tool to diagnose such infections. Drug susceptibility patterns help in rationalizing therapy. OBJECTIVE: The objective of this study was to perform bacteriological analysis and assess drug sensitivity patterns of isolates from blood stream infections. DESIGN: Retrospective observational study was conducted from May 2015 to February 2017 at a tertiary care hospital, Port Blair, India. Blood samples were collected with aseptic guidelines and cultured for 7 days. Growths were identified using standard biochemical tests and subjected to sensitivity testing according to Modified Kirby–Bauer’s disk diffusion method. Data for the source of blood collection and duration of incubation were noted and compared. RESULTS: A total of 270 (14.24%) pathogens were isolated from 1895 bacteremia suspect patient blood specimens. Contamination was observed at a rate of 1.63%. Gram-positive cocci (60.37%) were predominant organisms recovered followed by Gram-negative Bacilli (36.29%) and Yeasts (3.33%). Staphylococcus aureus, CoNS, and Acinetobacter spp. were the primary pathogens isolated. Aminoglycosides, carbapenems, and glycopeptides were the most effective drugs for treating bacteremia. CONCLUSIONS: Successful treatment of sepsis depends on early diagnosis and proper antimicrobial therapy. Local knowledge of bacteriological profile and antimicrobial sensitivity patterns helps rationalize empiric treatment strategies.

scholarly journals Prevalence of various Beta-lactamases in Enterobacteriaceae in a tertiary care hospital in South India: A Cross-sectional study

2021 ◽  
Vol 7 (3) ◽  
pp. 186-191
Author(s):  
Soumya Kaup ◽  
S Roopashree
Keyword(s):  
Tertiary Care ◽  
Resistance Mechanism ◽  
Control Measures ◽  
Resistance Pattern ◽  
Care Hospital ◽  
Beta Lactamase ◽  
Tertiary Care Centre ◽  
Cross Sectional ◽  
Strict Adherence ◽  
Extended Spectrum Beta Lactamase

Antimicrobial resistance among bacteria has constantly increased over the years with emergence of novel resistance mechanism among these versatile organisms. Identifying the resistance pattern of the isolates both regionally and globally is essential for the institution of appropriate antimicrobial therapy. This study was conducted to assess the prevalence of beta-Lactamase enzymes among species of Enterobacteriaceae.312 consecutive isolates belonging to the family of Enterobacteriaceae were included in the study conducted over a period of one year. After preliminary antibiotic susceptibility testing using standard guidelines, production of various beta-Lactamase enzymes was assessed by phenotypic methods.22.76% of the isolates were found to be Extended-Spectrum Beta-Lactamase producers, 37.82% were AmpC Beta-Lactamase producers and 7.37% of the isolates produced the Carbapenemase enzyme.Our study estimates the prevalence of various beta-Lactamase enzymes in isolates of Enterobacteriaceae in a tertiary care centre. The increase in production of these enzymes among bacteria necessitates the implementation of strict adherence to antibiotic policy and infection control measures.

scholarly journals Antibiotic resistance pattern among aerobic bacterial isolates from osteomyelitis cases attending a Tertiary care hospital of North India with special reference to ESBL, AmpC, MBL and MRSA production

2017 ◽  
Vol 5 (2) ◽  
pp. 482
Author(s):  
Razia Khatoon ◽  
Shameem Ahmad Khan ◽  
Noor Jahan
Keyword(s):  
Antibiotic Resistance ◽  
Methicillin Resistance ◽  
Tertiary Care ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Care Hospital ◽  
Drug Resistant ◽  
Bacterial Isolates ◽  
Gram Negative ◽  
Antibiotic Resistance Pattern

Background: Osteomyelitis is a common cause of morbidity in developing countries. Its treatment comprises of surgical debridement of all necrotic bone and soft tissue along with use of appropriate antimicrobial therapy. Treatment is becoming increasingly troublesome due to rise in drug resistant isolates in osteomyelitis cases. The present study was done to determine the antibiotic resistance pattern among aerobic bacterial isolates from osteomyelitis cases.Methods: 125 samples from osteomyelitis cases were aerobically cultured and isolates from culture positives were identified by standard procedures. Antimicrobial susceptibility testing was done by Kirby Bauer disk diffusion method. Staphylococcal isolates were screened for methicillin resistance and Gram negative bacilli were screened and confirmed for ESBL, AmpC and MBL production.Results: Out of 125 samples cultured, 20 were culture negative and 105 were culture positive giving rise to 120 isolates (58 Gram positive and 62 Gram negative organisms). The prevalence of methicillin resistant staphylococcal (MRS) isolates, ESBL, AmpC and MBL producers was found to be 43.1%, 51.6%, 24.2% and 14.5% respectively. All the resistant isolates were multidrug resistant, with MRS being 100% sensitive only to vancomycin, linezolid and teicoplanin, ESBL and AmpC producers being 100% sensitive only to imipenem and colistin, and MBL producers being 100% sensitive only to colistin.Conclusions: Antibiotic therapy on the basis of antibiotic susceptibility pattern helps the clinician to choose appropriate drugs leading to successful treatment and prevention of emergence and dissemination of drug resistant isolates.

scholarly journals Antibiotic Resistance Pattern of Bacterial Isolates from Post- Tracheostomised Patients Attending Tertiary Care Hospital in Nepal

2016 ◽  
Vol 21 (1) ◽  
pp. 129-132 ◽  
Author(s):  
Eliza Thapa ◽  
Roshan Thapa ◽  
Anjana Singh ◽  
Bharat Mani Pokharel ◽  
Upendra Devkota
Keyword(s):  
Klebsiella Oxytoca ◽  
Tertiary Care ◽  
Drug Susceptibility ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Resistant Bacteria ◽  
Care Hospital ◽  
Bacterial Isolates ◽  
Susceptibility Pattern ◽  
Drug Susceptibility Pattern

The bacterial profile and their drug susceptibility pattern was studied in post-tracheostomised patients admitted in National Institute of Neurological and Allied Sciences. Identification of organisms was done by standard microbiological techniques and antibiogram was performed by Kirby Bauer disc diffusion method according to Clinical and Laboratory standard (CLSI) guidelines. Significant growth was observed in 58.6% samples with polymicrobial growth in 19.5% samples among the total positive cultures. Pseudomonas aeruginosa was the predominant organism (34.2%) followed by Acinetobacter spp. (31.8%), Escherichia coli (8.9%), Klebsiella pneumoniae (6.0%), Citrobacter fruendii (5.6%), Klebsiella oxytoca (4.0%), Providencia spp. and Staphylococcus aureus (2.8% each), Proteus mirabilis (2.4%) and Proteus vulgaris (1.2%) . More than 90% of Gram negative bacterial isolates were found resistant to Ampicillin, Cefixime, Cephotaxime. The most effective drugs against S. aureus were Vancomycin, Rifampicin, Amoxycillin and Clavulanic acid showing 100% sensitivity. Highest resistance rate was observed for Ampicillin (85.71%) and low for Gentamicin (14.28%). Findings of this study show emerging threat of multidrug resistant bacteria. Thus, periodic monitoring and assessing drug susceptibility pattern of bacteria and rational use of antibiotics in post tracheostomised patients were recommended.Journal of Institute of Science and TechnologyVolume 21, Issue 1, August 2016, page: 129-132

scholarly journals Antibiotic Resistance Pattern of Pseudomonas aeruginosa Isolated from Clinical Specimens from a Tertiary Care Centre in Central Kerala with Special Reference to Carbapenemase Detection

2021 ◽  
Author(s):  
P.M. Anooja ◽  
Anu P. John
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibiotic Resistance ◽  
Antimicrobial Susceptibility ◽  
Tertiary Care ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Disc Diffusion ◽  
Tertiary Care Centre ◽  
Cross Sectional ◽  
Extended Spectrum Beta Lactamase

Pseudomonas aeruginosa is inherently resistant to many drugs. It is now an emerging opportunistic pathogen of clinical relevance. The emergence of carbapenemases is another major concern. Initiation of appropriate therapy is of paramount importance thus highlighting the need of active surveillance for newer emerging resistance trends for better infection control. To study the resistance pattern of P. aeruginosa isolates obtained from lab specimens and to determine the production of ESBL and Carbapenemase among them. A hospital-based cross-sectional study was carried out in the Department of Microbiology, Government medical college Thrissur, among P. aeruginosa isolates obtained from lab specimens, from January 2018 – December 2018. 162 isolates were studied. Antimicrobial susceptibility testing was done by Kirby–Bauer disc diffusion method, extended-spectrum beta-lactamase (ESBL) production was confirmed by and phenotypic confirmatory disc diffusion test. Carbapenemase detection was done using the modified carbapenemase inactivation (mCIM) method. The obtained data was analysed. Among 162 isolates 83% were non- multidrug-resistant (MDR) strains and 17% were MDR strains. 22% of ceftazidime resistant isolates were ESBL producers. 6.2% isolates were resistant to imipenem. Among the imipenem resistant isolates, Carbapenemase production was seen in 30% isolates by mCIM test. According to our study, the most effective antibiotic against P. aeruginosa were imipenem and cefoperazone/sulbactam showing resistance in 6.3% and 6.9% isolates respectively. The diversity of antibiotic resistance mechanisms and the emergence of carbapenem resistance is a threat that limits treatment choices. This suggests the need for ongoing antimicrobial susceptibility studies in the future.

Molecular detection of blaOXA-23gene and blaOXA-51 gene in carbapenem resistant strains of Acinetobacterbaumannii in patients with ventilator associated pneumonia at tertiary care hospital

2021 ◽  
Vol 71 (11) ◽  
pp. 2576-2581
Author(s):  
Saima Ishtiaq ◽  
Sidrah Saleem ◽  
Abdul Waheed ◽  
Arslan Ahmed Alvi
Keyword(s):  
Acinetobacter Baumannii ◽  
Tertiary Care ◽  
Carbapenem Resistance ◽  
Conventional Polymerase Chain Reaction ◽  
Diffusion Method ◽  
Military Hospital ◽  
Care Hospital ◽  
Acinetobacter Baumanii ◽  
Cross Sectional ◽  
Carbapenem Resistant

Objective: To evaluate carbapenem resistance and to detect blaOXA-23 and blaOXA-51 genes in carbapenem-resistant acinetobacter baumanii isolates recovered from patients having pneumonia secondry to ventilation. Methods: The cross-sectional study was conducted from July 2017 to June 2018 at the Department of Microbiology, University of Health Sciences, Lahore, Pakistan, and comprised endotracheal aspirates / tracheobroncheal lavage samples from patients irrespective of age and gender who developed pneumonia after being on the ventilator for 48 hrs at the Combined Military Hospital, and Jinnah Hospital, Lahore.  The samples were inoculated on MacConkey and blood agar and aerobically incubated at a temperature of 370C for 18-24 hours. The isolated organisms were further assessed by standard morphological, cultural and biochemical profile. Antibiotic susceptibility was done by Kirby-Bauer disc diffusion method. Carbapenem-resistant acinetobacter baumannii were checked for carbapenemase production using Modified Hodge Test. Conventional polymerase chain reaction and agarose gel electrophoreses were performed to detect blaOXA-23 and blaOXA-51 genes. Data was analysed using SPSS 17. Results: Out of 157 samples, 92(58.6%) yielded growth of bacteria, and, among them, 39(42.4%) were identified as acinetobacter baumannii. All (100%) acinetobacter baumannii cases showed resistance to carbapenem, were producing carbapenemase enzyme, and were positive for blaOXA-51 gene. The blaOXA-23 gene was amplified in 38(97.4%) isolates. Conclusion: BlaOXA-23 gene appeared to be the major cause of carbapenem resistance. Continuous...

scholarly journals Paradigm Shift in Antimicrobial Resistance Pattern of Bacterial Isolates during the COVID-19 Pandemic

Antibiotics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 954
Author(s):  
Vikas Saini ◽  
Charu Jain ◽  
Narendra Pal Singh ◽  
Ahmad Alsulimani ◽  
Chhavi Gupta ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Resistance ◽  
Tertiary Care ◽  
Public Health Problem ◽  
Resistance Pattern ◽  
Coagulase Negative Staphylococcus ◽  
Care Hospital ◽  
Bacterial Isolates ◽  
Hospital Infection Control ◽  
And Staphylococcus Aureus

Antimicrobial resistance (AMR) is an emerging public health problem in modern times and the current COVID-19 pandemic has further exaggerated this problem. Due to bacterial co-infection in COVID-19 cases, an irrational consumption of antibiotics has occurred during the pandemic. This study aimed to observe the COVID-19 patients hospitalized from 1 March 2019 to 31 December 2020 and to evaluate the AMR pattern of bacterial agents isolated. This was a single-center study comprising 494 bacterial isolates (blood and urine) that were obtained from patients with SARS-CoV-2 admitted to the ICU and investigated in the Department of Microbiology of a tertiary care hospital in Delhi, India. Out of the total bacterial isolates, 55.46% were gram negative and 44.53% were gram positive pathogens. Of the blood samples processed, the most common isolates were CoNS (Coagulase Negative Staphylococcus) and Staphylococcus aureus. Amongst the urinary isolates, most common pathogens were Escherichia coli and Staphylococcus aureus. A total of 60% MRSA was observed in urine and blood isolates. Up to 40% increase in AMR was observed amongst these isolates obtained during COVID-19 period compared to pre-COVID-19 times. The overuse of antibiotics gave abundant opportunity for the bacterial pathogens to gradually develop mechanisms and to acquire resistance. Since the dynamics of SARS-COV-2 are unpredictable, a compromise on hospital antibiotic policy may ultimately escalate the burden of drug resistant pathogens in hospitals. A shortage of trained staff during COVID-19 pandemic renders it impossible to maintain these records in places where the entire hospital staff is struggling to save lives. This study highlights the extensive rise in the use of antibiotics for respiratory illness due to COVID-19 compared to antibiotic use prior to COVID-19 in ICUs. The regular prescription audit followed by a constant surveillance of hospital infection control practices by the dedicated teams and training of clinicians can improve the quality of medications in the long run and help to fight the menace of AMR.

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