scholarly journals Antibiotic Susceptibility Profile of respiratory pathogens obtained at tertiary care hospital from western Nepal

2019 ◽  
Vol 7 (1) ◽  
pp. 1-7
Author(s):  
Deepak Subedi ◽  
Surya Prasad Devkota ◽  
Dharm Raj Bhatta ◽  
Binita Koirala Sharma ◽  
Ashmita Paudel ◽  
...  
Keyword(s):  
Antibiotic Susceptibility ◽  
Care Center ◽  
Tertiary Care ◽  
Clinical Samples ◽  
Lower Sensitivity ◽  
Respiratory Pathogens ◽  
Care Hospital ◽  
Gram Positive ◽  
Gram Negative ◽  
Sensitivity Rate

The prevalence and drug resistance of the respiratory pathogens is increasing gradually in Nepal. However, their detail study is rare in the western region of Nepal. Hence, this study was carried out to know the incidence and antibiotic susceptibility profile of the respiratory pathogens obtained at a tertiary care center located at Pokhara. 139 pathogens were isolated from 460 clinical samples included. Significant pathogens were Gram-negative bacteria 94 (67.62%), followed by 28 (20.15%) Candida, and Gram-positive isolates 17 (12.23%). The growth rate was significantly higher for sputum samples in comparison to throat swabs. Pseudomonas aeruginosa, Klebsiella pneumoniae, and Acinetobacter were significant Gram-negative isolates while Staphylococcus aureus, Streptococcus pneumoniae, and Streptococcus pyogenes were Gram-positive pathogens. Sensitivity rate was higher for colistin and imipenem among Gram-negative isolates while lower sensitivity was for cefepime. Vancomycin was effective against all tested Gram-positive isolates while erythromycin and ciprofloxacin were less effective.

scholarly journals Bacteriological spectrum of urinary, wound and respiratory infection with antibiogram of gram negative bacteria in a Bangladeshi tertiary care hospital

Mediscope ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 17-24
Author(s):  
NM Wahidur Rahman ◽  
Bushra Tanzem ◽  
Golam Nabi ◽  
Afsana Mahbub ◽  
Abu Md Mayeenuddin Al Amin
Keyword(s):  
Urinary Tract ◽  
Respiratory Tract ◽  
Antibiotic Susceptibility ◽  
Tertiary Care ◽  
Clinical Samples ◽  
Gram Negative Bacteria ◽  
Care Hospital ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria

Infection remains the main cause of morbidity and mortality in man, particularly in developing areas where it is associated with poverty and overcrowding. Infectious disease cause nearly 25% of all human deaths. This rate of mortality is increasing day by day due to antibiotic resistance, which is a major concern nowadays. Wound, respiratory tract and urinary tract are commonly associated with bacterial infection in both hospital and community settings. Area-specific monitoring studies aimed to gain knowledge about the type of bacterial pathogens responsible for these kinds of infections and resistance pattern of the causative agents may help clinicians to choose correct treatment regimen. So, the present study was aimed to investigate the pattern of bacteria which are responsible for Urinary tract, respiratory tract and wound infection. In addition, we also determined the antibiotic susceptibility profile of gram negative bacteria isolated from the patients who were attending both in and out patient departments at Sir Salimullah Medical College & Mitford Hospital (SSMC & MH) during January, 2009 to December, 2009. In this cross-sectional study, out of 308 clinical samples, a total of 159 (51.62%) samples were found to be positive for bacterial culture. Among the isolates 139 (87.42%) were Gram negative bacteria (Esch. coli, Klebsiella spp., Proteus spp., Pseudomonas spp., Acinetobacter spp.) and 20 (12.57%) were Gram positive bacteria (Staphylococcus aureus, Coagulase negative Staphylococcus). Antibiotic susceptibility of gram negative bacteria showed members of the Enterobacteriaceae were 100% sensitive to imipenem while they were found variably resistance to other commonly used antibiotics. We conclude that infections in the wound, respiratory and urinary tract are caused by both gram negative and gram positive bacteria. However, the frequency of gram negative bacteria is higher than the gram positive bacteria for these infections. Gram negative bacteria showed sensitive to imipenem and most of them were resistant to commonly used antibiotics. Therefore, clinicians should choose imipenem for patients who would be unresponsive to commonly used antibiotics. Mediscope Vol. 7, No. 1: Jan 2020, Page 17-24

scholarly journals Detection of bla NDM-1 Encoding Imepenemase among the Imipenem-Resistant Gram-Negative Bacilli Isolated from Various Clinical Samples at a Tertiary Care Hospital of Eastern Nepal: A Descriptive Cross-Sectional Study

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
S. Gautam ◽  
N. R. Bhattarai ◽  
K. Rai ◽  
A. Poudyal ◽  
B. Khanal
Keyword(s):  
Care Center ◽  
Tertiary Care ◽  
Hospital Setting ◽  
Clinical Samples ◽  
Care Hospital ◽  
Disc Diffusion ◽  
Diffusion Test ◽  
Cross Sectional ◽  
Gram Negative ◽  
Synergy Test

Background. Carbapenem resistance among Gram-negative isolates caused by the production of the metallo-β-lactamase (MBL) enzyme is being increasingly reported worldwide. One of the newly emerged metallo-β-lactamases is New Delhi metallo-β-lactamase. Data regarding its occurrence in hospital setting and percentage prevalence among different Gram-negative bacterial isolates are lacking in our part. This study has been undertaken for determining the presence of the bla NDM-1 gene among the clinical isolates of imipenem-resistant Gram-negative bacteria in a tertiary care center in Dharan, Nepal. Methods. A total of 75 imipenem-resistant Gram-negative isolates were studied. These were screened for metallo-β-lactamase (MBL) production by phenotypic assays such as double-disc synergy test (DDST) and combined disc diffusion test (CDDT). PCR was performed for the molecular detection of gene NDM-1. Ten-disc method was performed to detect the presence of ESBL, AmpC, carbapenamase, and K1 β-lactamase production. Results. Using the molecular method, bla NDM-1 was detected in 36% of the isolates. Phenotypically, double-disc synergy test (DDST) and combined disc diffusion test (CDST) detected MBL production in 38.7% and 37.3% of the isolates, respectively. Ten-disc method detected ESBL in 26.6% of the isolates, but none of the isolates was found to be AmpC, carbapenamase, and K1 β-lactamase producers. Conclusion. A high percentage of the NDM-1 producer was noted among imipenem-resistant GNB. Apart from performing only antimicrobial sensitivity test, phenotypic and molecular screening should be employed to find out the actual number of metallo-β-lactamase producers and the existence of the resistance gene.

scholarly journals Microbiological profile and antibiotic susceptibility pattern of Gram-positive isolates at a tertiary care hospital

2019 ◽  
Vol 11 (02) ◽  
pp. 144-148 ◽  
Author(s):  
Dhruv Mamtora ◽  
Sanjith Saseedharan ◽  
Pallavi Bhalekar ◽  
Surekha Katakdhond
Keyword(s):  
Antibiotic Susceptibility ◽  
Tertiary Care Hospital ◽  
Methicillin Resistance ◽  
Tertiary Care ◽  
Resistance Pattern ◽  
Lower Sensitivity ◽  
Care Hospital ◽  
Susceptibility Pattern ◽  
Gram Positive ◽  
Antibiotic Susceptibility Pattern

Abstract OBJECTIVES: Gram-positive infections such as those by Staphylococcus aureus have contributed to the disease burden by increasing the morbidity and mortality rates in India. This study aims to determine the prevalence and the antibiotic susceptibility pattern of Gram-positive pathogens at a tertiary care hospital, Mumbai, Maharashtra, India. MATERIALS AND METHODS: This retrospective cross-sectional study was carried out from January, 2015 to December, 2017, at a tertiary care hospital in Mumbai, India. The clinical isolates were cultured, and identification was done using Vitek 2 culture system. The antibiotic susceptibility testing was done as per the Clinical Laboratory Standard Institute guidelines. RESULTS: Out of 2132 (29%) Gram-positive isolates, S. aureus (49%) was the most common encountered pathogen, followed by Enterococcus spp. (24.5%) and coagulase-negative Staphylococcus (16%). Majority of the S. aureus were observed in patients with skin and soft-tissue infections (61.2%) followed by those suffering from respiratory (41%) and bloodstream infections (35%). Among the infections caused by S. aureus, the prevalence of methicillin resistance was 30%. While the MRSA isolates showed lower sensitivity toward co-trimoxazole (39%), clindamycin (30%), erythromycin (23%), and ciprofloxacin (10%), they showed higher susceptibility to linezolid (98%), vancomycin (98%), and teicoplanin (98%). All the isolates were found to be sensitive to daptomycin and tigecycline. While vancomycin-resistant enterococci (VRE) formed 7.5%, the linezolid-resistant enterococcus species was as high as 4.1%. CONCLUSION: The study showed a high prevalence of MRSA and VRE, thereby emphasizing the increasing antimicrobial resistance pattern of the Gram-positive pathogens. Therefore, there is an urgent need for novel antimicrobial stewardship to restrict the ongoing resistance rate among the isolates.

scholarly journals Childhood Septicemia in Nepal: Documenting the Bacterial Etiology and Its Susceptibility to Antibiotics

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Shamshul Ansari ◽  
Hari Prasad Nepal ◽  
Rajendra Gautam ◽  
Sony Shrestha ◽  
Puja Neopane ◽  
...  
Keyword(s):  
Antibiotic Susceptibility ◽  
Methicillin Resistance ◽  
Care Center ◽  
Tertiary Care ◽  
Diffusion Method ◽  
Coagulase Negative Staphylococci ◽  
Gram Positive ◽  
Disk Diffusion Method ◽  
Gram Negative ◽  
Microbiological Methods

Introduction. Children are among the most vulnerable population groups to contract illnesses. The varying microbiological pattern of septicemia warrants the need for an ongoing review of the causative organisms and their antimicrobial susceptibility pattern. Therefore, the objective of this study was to document the bacterial etiology of childhood septicemia and its antibiotic susceptibility profile.Methods.Cross-sectional type of study in 1630 suspected patients was conducted at CMCTH from January 2012 to December 2013. Blood samples were collected aseptically for culture. The organisms grown were identified by standard microbiological methods recommended by American Society for Microbiology (ASM) and subjected to antibiotic susceptibility testing by modified Kirby-Bauer disk diffusion method. Methicillin resistance was confirmed using cefoxitin and oxacillin disks methods.Results.Septicemia was detected in 172 (10.6%) cases. Among Gram-positive organisms, coagulase negative staphylococci (CoNS) were leading pathogen andAcinetobacterspp. were leading pathogen among Gram-negative isolates. Vancomycin, teicoplanin, and clindamycin were the most effective antibiotics against Gram-positive isolates while amikacin was effective against Gram-positive as well as Gram-negative isolates. Methicillin resistance was detected in 44.4% ofStaphylococcus aureus.Conclusions. This study has highlighted the burden of bacterial etiology for septicemia among children in a tertiary care center of central Nepal.

scholarly journals Prevalence of extended-spectrum beta-lactamase producing gram negative isolates in Enterobacteriaceae group of bacteria in clinical samples from a tertiary care hospital

2021 ◽  
Vol 9 (3) ◽  
pp. 162-168
Author(s):  
Parmar M ◽  
Halpati A ◽  
Desai K
Keyword(s):  
General Hospital ◽  
Antibiotic Susceptibility ◽  
Tertiary Care ◽  
Diffusion Method ◽  
Clinical Samples ◽  
Care Hospital ◽  
Microbiology Laboratory ◽  
Gram Negative ◽  
Extended Spectrum ◽  
Antibiotic Susceptibility Test

Introduction: Extended spectrum β-lactamases (ESBLs) are enzymes that intervene resistance to extended-spectrum (third generation) cephalosporins (e.g., ceftazidime, cefotaxime, and ceftriaxone) and but do not affect carbapenems (e.g., meropenem or imipenem). Though the number of ESBLs producing organism has been increasing day by day, the detection methods and treatment option for them are extremely limited. Objective: Objective of the study was to investigate the rate of ESBLs production and their antibiotic susceptibility pattern. Materials and method: A total 200 Gram negative isolates from various clinical samples received in microbiology laboratory, Sir Takhtsinhji General Hospital, Bhavnagar were studied and Antibiotic susceptibility test was done for commonly used antibiotics. A hospital-based study was conducted in microbiology laboratory, Sir Takhtsinhji General Hospital, Bhavnagar from February 2012 to August 2012. A total of 200 Gram negative isolates from various clinical samples were collected and identified using the conventional biochemical tests following the Clinical and Laboratory Standard Institute (CLSI) guidelines. Antimicrobial susceptibility testing (AST) was performed using the standardized Kirby-Bauer disk diffusion method. Results: Among the total isolates 89(44.5%) were ESBLs producer, and the rate of ESBLs positivity was 39.8% for E. coli (33 out of 83), 10% for Proteus mirabilis (1 out of 10), 51.4% for Klebsiella spp (55 out of 107). ESBLs producing organisms were resistant to most of the antibiotics but 100% were sensitive to imipenem, meropenem, and cefoperazone + sulbactam. Conclusion: Screening for ESBLs production requires to be carried out regularly in all clinical diagnostic laboratories to direct clinicians in appropriate selection of antibiotics.

scholarly journals Detection and Antimicrobial Susceptibility Pattern of Extended Spectrum Beta Lactamases (ESBLs) Producing Gram Negative Bacteria from Different Clinical Samples

Pulse ◽  
2016 ◽  
Vol 8 (1) ◽  
pp. 15-20
Author(s):  
Suma Mita Biswas ◽  
Nikhat Ara ◽  
Nasreen Huda ◽  
Sofia Andalib ◽  
Mohammad Hefzur Rahman ◽  
...  
Keyword(s):  
Antibiotic Susceptibility ◽  
Tertiary Care ◽  
Detection Methods ◽  
Clinical Samples ◽  
Care Hospital ◽  
Clinical Diagnostic Laboratory ◽  
Diagnostic Laboratory ◽  
Gram Negative ◽  
Extended Spectrum ◽  
Antibiotic Susceptibility Test

Introduction: Extended spectrum ?-lactamases (ESBLs) are enzymes that mediate resistance to extended-spectrum (third generation) cephalosporins (e.g., ceftazidime, cefotaxime, and ceftriaxone) and monobactams (e.g., aztreonam) but do not affect cephamycins (e.g., cefoxitin and cefotetan) or carbapenems (e.g., meropenem or imipenem). Though the no. of ESBLs producing organism has been increasing day by day, the detection methods and treatment option for them are extremely limited.Aims & Objective: The present study was undertaken to investigate the rate of ESBLs production and their antibiotic susceptibility pattern.Materials & Method: A total 110 Gram negative isolates from various clinical samples from a tertiary care hospital were studied and ESBLs production was detected by double disc synergy test. Antibiotic susceptibility test was done for commonly used antibiotics.Results: Among the total isolates 66.36% (73) were ESBLs producer, and the rate of ESBLs positivity was 80.32% for E.coli (49 out of 61), 25% for Pseudomonas spp (6 out of 24), 71.42% for Klebsiella spp (10 out of 14), 80% for Enterobacter spp (4 out of 5), 100% for Acinetobacter spp (4 out of 4) and 0% for Proteus spp (0 out of 2). ESBLs producing organisms were resistant to most of the antibiotics but 100% were sensitive to imepenem.Conclusion: Screening for ESBLs production needs to be carried out routinely in every clinical diagnostic laboratory to guide clinicians in proper selection of antibiotics.Pulse Vol.8 January-December 2015 p.15-20

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 Microbial Patterns and Antibiotic Susceptibility in Blood Culture Isolates of Septicemia Suspected Children in the Pediatrics Ward of a Tertiary Care Hospital

2021 ◽  
Author(s):  
Muhammad Sarfraz Khan ◽  
Arslan Kareem ◽  
Kiran Fatima ◽  
Saima Rauf ◽  
Areeb Khalid ◽  
...  
Keyword(s):  
Antibiotic Susceptibility ◽  
Lower Sensitivity ◽  
Gram Negative Bacteria ◽  
Care Hospital ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Two Samples ◽  
Acinetobacter Spp ◽  
Multiple Drugs

Abstract Objectives This study aims to determine microbial patterns and antibiotic susceptibility to alert clinicians to the emerging pathogens that may pose a threat to the community, especially children. Materials and Methods This retrospective cross-sectional study was conducted in the Department of Pathology, Holy Family Hospital, Rawalpindi, Pakistan, from July 2019 to December 2019. Two samples were taken from two different sites of each patient at the time of fever (> 100° F) to avoid chances of contamination. A blood sample of 5 to 10 mL was drawn from each site. In a 50 mL brain heart infusion broth (BHIB), 5 to 10% blood was injected in two different bottles and incubated for 48 hours at 37°C. After 48 hours, subculture was done by streaking the drops of blood samples taken from BHIB on blood and MacConkey agar. Cultures were incubated in aerobic conditions at 37°C for 24 to 48 hours. For testing antibiotic susceptibility, criteria defined by the Clinical and Laboratory Standards Institute (CLSI) were followed. Microbes were identified under a microscope by observing their morphological characteristics after gram staining and applying biochemical tests. Antibiotic sensitivity test was performed using standard aseptic methods. Statistical Analysis Bacterial isolates and their susceptibility patterns were represented using frequencies and percentage charts. Results Out of 423 blood cultures, growth was recorded in 92 (21.75%) of the cultures with female to male ratio 2.1:1. The gram-positive bacteria accounted for 43.48% (n = 40), whereas gram-negative bacteria covered the majority 54.36% (n = 50). Among isolates, Staphylococcus aureus (42.39%) was the most common, followed by Acinetobacter spp. (17.39%) and Pseudomonas aeruginosa (14.13%). Acinetobacter spp. showed 0% susceptibility to amikacin and cefotaxime. All the isolates were 100% resistant to amoxicillin-clavulanic acid. S. aureus showed lower sensitivity for ceftazidime (0%), clindamycin (66.67%), ciprofloxacin (0%), clarithromycin (11.76%), and ceftriaxone (0%). Tigecycline showed 100% sensitivity for all isolates tested. Conclusion Gram-negative bacteria form the majority of isolates in our setup, with Acinetobacter as the most common species among them. The resistance against cephalosporins, penicillin, and fluoroquinolones shown by Acinetobacter, Pseudomonas, Salmonella, and Klebsiella is of grave concern. Among gram-positive bacteria, S. aureus has established resistance against multiple drugs. Limited and objective use of antibiotic therapy is a much-needed strategy under new guidelines.

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