Microbiological profile of infective keratitis in a tertiary care hospital in north Karnataka

Corneal blindness is seen worldwide with 1.5 to 2 million new cases reported every year and approximately there are 6.8 million cases of corneal blindness in India. The study constituted 109 clinically diagnosed infective keratitis cases. Aseptically collected corneal scrapings are subjected to Gram stain, KOH wet mount & Culture. Further identification done by study of Colony morphology, staining & biochemical tests. Antibiotic sensitivity was found using Kirby buer’s disc diffusion method following CLSI guidelines. Males affected more common than females. Common age group being 21-40 yrs. Infective keratitis is usually Bacterial(61.4%) in origin than fungal(22%). Trauma found to be the most common predisposing factor followed by diabetes, other ocular diseases, surgery & corticosteroid therapy. Trauma with vegetative material is most common. Streptococcus pneumonia & pseudomonas are most common bacterial cause while Fusarium & Aspergillus cause most fungal cases. Infective keratitis both bacterial & fungal are more common in working males, mainly agriculturists who are exposed to vegetative trauma. Early detection and treatment with proper antibacterial & antifungals is important to prevent ocular problems and scarring of cornea.

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TO STUDY ANTIBIOTIC SENSITIVITY PATTERN OF NONFERMENTATIVE GRAM NEGATIVE BACILLI FROM VARIOUS CLINICAL SAMPLES IN A TERTIARY CARE HOSPITAL, JAIPUR.

International Journal of Medical and Biomedical Studies ◽

10.32553/ijmbs.v4i5.1132 ◽

2020 ◽

Vol 4 (5) ◽

Author(s):

Kirti Hemwani ◽

P. S. Nirwan ◽

Preeti Shrivastava ◽

Abhiraj Ramchandani

Keyword(s):

Tertiary Care ◽

Antibiotic Sensitivity ◽

Polymyxin B ◽

Hospital Environment ◽

Diffusion Method ◽

Clinical Samples ◽

Care Hospital ◽

Pathogenic Potential ◽

Gram Negative ◽

Sensitivity Pattern

Background: Nonfermentative gram negative bacilli (NFGNB) frequently considered as commensals or contaminants but the pathogenic potential of nonfermenters has been proved beyond doubt. They are resistant to commonly used antimicrobials. Aim: This study was undertaken to identify the nonfermenters isolated from various clinical samples and to know their Antibiotic sensitivity pattern. Materials and Methods: The present study was carried out on 150 strains of Nonfermenters isolated from 1200 various non repetitive clinical samples received in Department of Microbiology, NIMS Jaipur. Nonfermenters were identified using a standard protocol and their antibiotic susceptibility testing was performed with the help of the modified Bauer disc diffusion method. Results: Out of 150 nonfermenters isolated, Pseudomonas aeruginosa was the most common isolate 134 (89.33%) followed by Acinetobacter baumannii 16 (10.67%). Among all clinical samples Pus and Wound Discharge yield maximum isolates of NFGNB i.e. 54 (36%) % followed by sputum (39.0%). Most sensitive drug against NFGNB was Polymyxin-B (100%) followed by Imipenem (86 %) and Amikacin (71.33 %). Conclusion: Nonfermenters have a great potential to survive in a hospital environment so implementation of antibiotic stewardship programs and strict infection control practices will be required to prevent or slow down their emergence and spread. Keywords: Nonfermenters, Polymyxin-B, Pseudomonas, Acinetobacter.

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Bacterial Etiology of Wound Exudates in Tertiary Care Cancer Patients and Antibiogram of the Isolates

Infectious Diseases Research and Treatment ◽

10.1177/1178633720952077 ◽

2020 ◽

Vol 13 ◽

pp. 117863372095207

Author(s):

Kiran Duwadi ◽

Sujan Khadka ◽

Sanjib Adhikari ◽

Sanjeep Sapkota ◽

Pabitra Shrestha

Keyword(s):

Staphylococcus Aureus ◽

Pathogenic Bacteria ◽

Methicillin Resistance ◽

Tertiary Care ◽

Antibiotic Sensitivity ◽

Cross Sectional Study ◽

Diffusion Method ◽

Disc Diffusion ◽

Biochemical Tests ◽

Cross Sectional

Introduction: Patients with malignancies frequently develop infections as a result of surgical procedures and fungating wounds leading to pus formation. This cross-sectional study was conducted to explore the bacteriological spectra of infections of various cancer sites and their antibiotic sensitivity patterns among the patients visiting minor operation theatre (OT) of B.P. Koirala Memorial Cancer Hospital (BPKMCH), Chitwan, Nepal. Methods: Over a period of 3 months from September to November 2018, a total of 183 wound exudates and pus samples were collected and analyzed by standard microbiological procedures. Isolates were identified based on the colony characters, Gram staining and an array of biochemical tests. Antibiotic susceptibility testing was performed by Kirby-Bauer disc diffusion technique according to criteria set by CLSI, 2016. Methicillin resistance in Staphylococcus aureus was tested with the help of cefoxitin using disc diffusion method. Results: Out of the 183 samples, 149 (81.4%) were culture positive. Among 13 different isolates identified, S. aureus (43.0%) was predominant followed by E. coli (14.0%). Higher incidence of bacteria was seen among the males (52.3%), in the age group 51 to 60 years (26.8%) and among the patients undergoing surgical intervention to deal with cancer (34.2%). The prevalence of wound infection was significantly affected by gender, age, and treatment regimen ( P < .01). Out of the total 68 S. aureus isolates, 38 (44.1%) were deemed as Methicillin-resistant Staphylococcus aureus (MRSA). Among the 158 isolates, 85 (53.8%) were multi-drug resistant (MDR). Cefepime was the most effective antibiotic for Gram positive isolates whereas both imipenem and meropenem were found to be equally more effective for Gram negative isolates. Conclusion: This study suggests that patients with malignancies harbor pathogenic bacteria; therefore, prudent use of antibiotics is essential to prevent the emergence of MDR pathogens.

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

Journal of Laboratory Physicians ◽

10.1055/s-0040-1714199 ◽

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.

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Bloodstream infections and trends of antimicrobial sensitivity patterns at Port Blair

Journal of Laboratory Physicians ◽

10.4103/jlp.jlp_50_18 ◽

2018 ◽

Vol 10 (03) ◽

pp. 332-337 ◽

Cited By ~ 1

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.

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Prevalence of carbapenemase-producing Klebsiella pneumoniae at a tertiary care hospital in Kathmandu, Nepal

Tropical Medicine and Health ◽

10.1186/s41182-021-00368-2 ◽

2021 ◽

Vol 49 (1) ◽

Author(s):

Susil Pyakurel ◽

Mehraj Ansari ◽

Smriti Kattel ◽

Ganesh Rai ◽

Prasha Shrestha ◽

...

Keyword(s):

Bacterial Infections ◽

Tertiary Care Hospital ◽

Tertiary Care ◽

Diffusion Method ◽

Clinical Samples ◽

Resistant Bacteria ◽

Growth Media ◽

Care Hospital ◽

Drug Resistant ◽

Biochemical Tests

Abstract Aim Although carbapenem is the last-resort drug for treating drug-resistant Gram-negative bacterial infections, prevalence of carbapenem-resistant bacteria has substantially increased worldwide owing to irrational use of antibiotics particularly in developing countries like Nepal. Therefore, this study was aimed to determine the prevalence of carbapenemase-producing K. pneumoniae and to detect the carbapenemase genes (blaNDM-2 and blaOXA-48) in at a tertiary care hospital in Nepal. Materials and methods A hospital-based cross-sectional study was carried out from June 2018 to January 2019 at the Microbiology Laboratory of Annapurna Neurological Institute and Allied Sciences, Kathmandu, Nepal. Different clinical samples were collected and cultured in appropriate growth media. Biochemical tests were performed for the identification of K. pneumoniae. Antibiotic susceptibility testing (AST) was performed by the Kirby–Bauer disc diffusion method. The modified Hodge test (MHT) was performed to detect carbapenemase producers. The plasmid was extracted by the modified alkaline hydrolysis method. Carbapenemase-producing K. pneumoniae were further confirmed by detecting blaNDM-2 and blaOXA-48 genes by PCR using specific forward and reverse primers followed by gel electrophoresis. Results Out of the total 720 samples, 38.9% (280/720) were culture positive. K. pneumoniae was the most predominant isolate 31.4% (88/280). Of 88 K. pneumoniae isolates, 56.8% (50/88) were multi-drug resistant (MDR), and 51.1% (45/88) were MHT positive. Colistin showed the highest sensitivity (100%; 88/88), followed by tigecycline (86.4%; 76/88). blaNDM-2 and blaOXA-48 genes were detected in 24.4% (11/45) and 15.5% (7/45) of carbapenemase-producing K. pneumoniae isolates, respectively. Conclusion The rate of MDR and carbapenemase production was high in the K. pneumoniae isolates. Colistin and tigecycline could be the drug of choice for the empirical treatments of MDR and carbapenemase-producing K. pneumoniae. Our study provides a better understanding of antibiotic resistance threat and enables physicians to select the most appropriate antibiotics.

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Antibiotic Sensitivity against Proteus Mirabilis Isolated from Pus Samples in Tertiary Care Hospital of Quetta, Pakistan

Pak-Euro Journal of Medical and Life Sciences ◽

10.31580/pjmls.v2i1.1065 ◽

2019 ◽

Vol 2 (1) ◽

pp. 5-8

Author(s):

Saif ur Rahman ◽

Zafar Ahmad ◽

Saad Ullah Jan ◽

Muhammad Shafee ◽

Ashiq Hussain

Keyword(s):

Proteus Mirabilis ◽

Tertiary Care Hospital ◽

Tertiary Care ◽

Brain Heart Infusion ◽

Antibiotic Sensitivity ◽

Test Strip ◽

Care Hospital ◽

Gram Stain ◽

Macconkey Agar ◽

Biochemical Tests

Abstract Proteus is an important microorganism that have been isolated from wound infections causing severe complications. This study was aimed to isolate and determine the antibiotic sensitivity profile against isolates. A total of 50 wound and pus samples were collected from patients admitted in BMC Hospital, Quetta and processed in Pathobiology Laboratory of Center for Advance Studies of Vaccinology and Biotechnology (CASVAB) University of Baluchistan. All the samples were inoculated onto Brain Heart infusion (BHI), MacConkey agar, Cysteine-Lactose-Electrolyte-Deficien (CLED) and Blood agar and incubated at 37 oC, overnight. The suspected colonies were identified by gram stain and different biochemical tests and also confirmed by local made Quick Test Strip 12 (QTS 12). Among the total 50 samples 8 were found positive for Proteus mirabilis. Antimicrobial susceptibility of Proteus mirabilis against different antibiotic was evaluated by Kirby-Baur Method. Four different antibiotics were tested and ampicillin was found highly susceptible (75%), followed by Gentamicin (50%), Ceftazidime (40%) and ciprofloxacin (40%). This study shows the incidence of Proteus mirabilis in wound infection and best possible antimicrobial therapies against its infection.

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A study of microbial gamut and antibiograms in chronic suppurative otitis media

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20185296 ◽

2018 ◽

Vol 5 (1) ◽

pp. 110

Author(s):

Raj Tajamul Hussain ◽

Sanam Altaf ◽

Owais Makhdoomi ◽

Mariya Ali

Keyword(s):

Otitis Media ◽

Tertiary Care ◽

Antibiotic Sensitivity ◽

Chronic Suppurative Otitis Media ◽

Fungal Culture ◽

Care Hospital ◽

Biochemical Tests ◽

Suppurative Otitis Media ◽

Gram Staining ◽

Sensitivity Pattern

Background: The aim of the study was to discern the patterns in microbial diversity and the resistogram among the patients suffering from CSOM.Methods: A total number of 100 ear swabs were investigated for the present study. Their gram staining, direct microscopy with KOH, culture sensitivity, and biochemical tests were carried out to identify the organisms and to know their sensitivity pattern. All the swabs were collected from clinically diagnosed cases of chronic suppurative otitis media visiting otolaryngology outpatient department of tertiary care hospital. The study period was one year, from January 2016 to December 2017. Results: Out of total 100 cases, 90 were culture positives, 6 showed no growth and 4 were skin contaminants (mirococci). Out of 90 culture positives, fungal culture was positive in 5 (5.5%) while combined bacteria and fungi obtained in 18 (20%) cases and only bacteria in 67 (74.4%) cases. Among the aerobic bacterial isolates, Pseudomonas aeruginosa was the most common bacteria isolated from the bacterial culture (n=36; 34.95%) followed by Staphylococcus aureus (n=28; 27.18%) and Proteus (n=13; 12.62%). Among the fungal isolates, Aspergillus niger was predominant followed by Candida albicans & Aspergillus flavus. Amikacin and imipenem were found to be the most effective antibiotics with low resistance rates.Conclusions: The present study gave an insight into the bacteriological profile of the cases of CSOM and their antibiotic sensitivity patterns. This in turn will ensure rational and judicious use of antibiotics and thus prevent emergence of resistant bugs and also the complications associated with CSOM.

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Antibiogram of Urinary Enterococcus isolates from a tertiary care hospital

Infectious Disorders - Drug Targets ◽

10.2174/1871526520666200403140618 ◽

2020 ◽

Vol 20 ◽

Author(s):

Nanditha Rajaram Bhat ◽

Shruthi Bhat Kodur Shivashankar ◽

Biranthabail Dhanashree

Keyword(s):

Tertiary Care ◽

Clinical Problem ◽

Diffusion Method ◽

Care Hospital ◽

Biochemical Tests ◽

Serious Infections ◽

Enterococcus Spp ◽

Agar Dilution ◽

Vancomycin Resistant ◽

High Level

Purpose: Urinary tract infection (UTI) is one of the serious infections caused by enterococci. VancomycinResistant Enterococci (VRE), is a persevering clinical problem globally. This study aims to detect high-level aminoglycoside and vancomycin resistance in uropathogenic Enterococcus spp. Methodology: A total of 75 clinically relevant Enterococcus spp. grown from urine samples, were collected following convenience non-random sampling method. Identified by standard biochemical tests and susceptibility to antibiotics was studied by Kirby Bauer’s disc diffusion method. The MIC of vancomycin was detected by agar dilution test. Van A, and Van B genes in VREs were detected by PCR. Results: Among the 75 Enterococcal isolates, 43 (57.3%) were E.faecalis, 12 (16%) were E.faecium, six (8%) each were E.pseudoavium and E.casseliflavus, five (6.66%) were E.dispar and three (4%) were E.durans. E.faecalis (n=19) and E.faecium (n=3) were resistant to High Level Streptomycin (HLS). E.faecalis (n=21) and E.faecium (n=6) were resistant to High Level Gentamicin (HLG). Four (9.3%) E.faecalis were vancomycin-resistant, of which three were of Van A, and one was both Van A and Van B genotype. Conclusion: Isolation of high level aminoglycoside resistant (HLAR) Enterococci is a challenge for the treating physician because aminoglycoside cannot be used in combination with glycopeptide or ampicillin for such isolates. The occurrence of HLAR, Van A and Van B VRE genotypes is a cause of concern as they may transfer drug resistance genes to other bacterial isolates, thus leading to limited therapeutic options.

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Prevalence of Methicillin-resistant Staphylococcus Aureus (MRSA) in a Tertiary Care Hospital in Northern India

Journal of Laboratory Physicians ◽

10.4103/0974-2727.72154 ◽

2010 ◽

Vol 2 (02) ◽

pp. 078-081 ◽

Cited By ~ 14

Author(s):

Shilpa Arora ◽

Pushpa Devi ◽

Usha Arora ◽

Bimla Devi

Keyword(s):

Staphylococcus Aureus ◽

Antibiotic Susceptibility ◽

Methicillin Resistant Staphylococcus Aureus ◽

Methicillin Resistance ◽

Tertiary Care ◽

Antibiotic Sensitivity ◽

Diffusion Method ◽

Care Hospital ◽

Methicillin Resistant ◽

Sensitivity Pattern

ABSTRACT Aim: The emergence of Methicillin-resistant Staphylococcus aureus (MRSA) has posed a serious therapeutic challenge. We report the prevalence and antibiotic susceptibility pattern of MRSA in the hospitals attached to GMC, Amritsar, Punjab. Materials and Methods: The study comprised of 250 coagulase-positive staphylococci (COPS) isolated from a total of 6743 clinical specimens (like pus, blood, urine, high vaginal swab, sputum, etc.) of patients admitted in hospitals attached to Government Medical College, Amritsar from January 2008−February 2009. Routine antibiotic susceptibility testing was performed and interpreted as per standard guidelines. Methicillin resistance was detected using oxacillin and cefoxitin disc diffusion method, oxacillin screen agar method, and minimum inhibitory concentration using broth macrodilution method. Results: A total of 115 (46%) strains were found to be methicillin resistant. Multidrug resistance was observed in 73% MRSA strains. However, no strain was resistant to vancomycin. Conclusion: Regular surveillance of hospital-associated infection and monitoring of antibiotic sensitivity pattern is required to reduce MRSA prevalence.

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Prevalence of ESBL and MBL Producing Acinetobacter species Isolated from Various Clinical Samples in Tertiary Care Hospital in North-West Region of Rajasthan

International Journal of Current Microbiology and Applied Sciences ◽

10.20546/ijcmas.2021.1010.062 ◽

2021 ◽

Vol 10 (10) ◽

pp. 524-532

Author(s):

Sumitra Kumari Sanju Pannu ◽

Anjli Gupta Geeta Tinna ◽

B.P. Sharma

Keyword(s):

Tertiary Care ◽

Antibiotic Sensitivity ◽

Diffusion Method ◽

Clinical Samples ◽

Care Hospital ◽

Sensitivity Testing ◽

Acinetobacter Species ◽

North West ◽

Medical College ◽

Vaginal Swabs

This study was conducted with an objective to find the prevalence of extended spectrum betalactamase (ESBL) and metallo betalactamase (MBL) in Acinetobacter species. It was conducted in the Department of Microbiology, Sardar Patel Medical college, Bikaner from Feb 2018 to Feb.2019. in various clinical specimens including urine, pus, blood, vaginal swabs, respiratory samples, and various body fluids were processed Acinetobacter species isolates were identified by standard protocols. Antibiotic sensitivity testing for all isolates was done using Kirby-Bauer disc diffusion method. Disc potentiation test was performed to check ESBL and MBL production in these bacteria. Maximum ESBL and MBL positive isolates of Acinetobacter species were observed among E.T. tube samples. Early detection, stringent antibiotic policies, and compliance towards infection control practices are the best defenses against this organisms.

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