scholarly journals Colonization and Antibiotic Resistance Profiling of Methicillin Resistant Staphylococcus Aureus (Mrsa) in Patients from Tertiary

2020 ◽  
Vol 1 (3) ◽  
pp. 31-39
Author(s):  
Madiha Khan ◽  
Wafa Komal ◽  
Mushtaq A. Saleem ◽  
Naveed Ahmad ◽  
Zara Rafaque ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Culture Media ◽  
Tertiary Care ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Clinical Samples ◽  
Care Hospital ◽  
Cross Sectional ◽  
Methicillin Resistant

The methicillin resistant Staphylococcus aureus (MRSA) is affecting the economy worldwide contributing to the increased morbidity and treatment costs. The present cross sectional study was conducted to determine the association of MRSA with kidney and liver patients from Tertiary Care Hospital in Lahore, Pakistan and its antibacterialresistance patterns. The study was conducted for the period of one year; from April 2019 to April 2020. A total of 1984 different samples were obtained and examined for bacterial cultures using standard procedures. From total samples, 51.05% were collected from male and the rest 48.95% were collected from females including different age groups. Samples were inoculated on different culture media for isolation of S. aureus and susceptibility testing. A total of 253/1984 clinical samples exhibited S. aureus characteristics while 39 of 253 S. aureus (15.41%) were identified as MRSA. MRSA strains were found highly resistant to Amikacin (AK), Cefoxitin (FOX),Clindamycin (DA), Fusidic acid (FD), Gentamicin (CN) and Tobramycin (TOB) while highest sensitivity was noted against Vancomycin (100%) and Linezolid (100%). The presence of MRSA and multidrug resistance pose serious therapeutic burden to critically ill patients. A systematic and concerted effort is essential to identify high-risk patients rapidly and to reduce the burden of antimicrobial resistance.

scholarly journals Antibiotic Susceptibility Pattern of Nosocomial Isolates of Staphylococcus aureus in a Tertiary Care Hospital, Nepal

2009 ◽  
Vol 48 (175) ◽  
Author(s):  
Bidya Shrestha ◽  
B M Pokhrel ◽  
T M Mohapatra
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Tertiary Care ◽  
Test Method ◽  
University Teaching ◽  
Clinical Samples ◽  
Resistance Pattern ◽  
Care Hospital ◽  
Biochemical Tests ◽  
Methicillin Resistant

Introduction: Methicillin resistant Staphylococcus aureus (MRSA), the most common cause ofnosocomial infection has been a major cause of morbidity and mortality around the world. They arenormally resistant to most of the antibiotics used in clinical practice. This study has been carried outto fi nd out the resistance pattern among S. aureus.Methods: During November 2007 to June 2008, clinical samples from patients with nosocomialinfection were processed for culture and sensitivity following standard methodology in microbiologylaboratory, Tribhuvan University teaching hospital, Kathmandu, Nepal.Results: Among 149 Staphylococcus aureus isolates, highest resistance was observed against Penicillin(91.94%) followed by Fluoroquinolone (61.74%), Erythromycin (52.94%), Gentamicin (46.98%),Cotrimoxazole (42.95%), Tetracycline (40.94%) and others, whereas susceptibility was observedmaximum against Chloramphenicol (94.85%) followed by Rifampicin (92.61%), Tetracycline(59.06%), Cotrimoxazole (57.04%), and others. None of the isolates were resistant to Vancomycinand Teicoplanin. Of these isolates 44.96 % of the isolates were Methicillin resistant S. aureus (MRSA).Resistance to Penicillin, Fluoroquinolone, Erythromycin, Gentamicin, Co-trimoxazole and Tetracyclinewere associated signifi cantly with MRSA isolates (X2= 8.779, p<0.05, X2= 74.233, p<0.05, X2= 84.2842,p<0.05, X2= 108.2032, p<0.05, X2= 88.1512, p<0.05 and X2= 79.1876, p<0.05 respectively). Althoughmost of the Methicillin sensitive S. aureus (MSSA) isolates were susceptible to both Rifampicinand Chloramphenicol, only Rifampicin susceptibility was signifi cantly associated with them (X2=10.1299, p<0.05). Among three Biochemical tests for the detection of β lactamase detection namelychromogenic, iodometric and acidimetric test, chromogenic test method had highest sensitivity andspecifi city.Conclusions: Since MRSA comprised a greater part of S. aureus isolates and were multi-resistant,patients infected by such strains should be identifi ed and kept in isolation for hospital infectioncontrol and treated with second line of drug like vancomycin.Key Words: β lactamase, methicillin resistant Staphylococcus aureus,methicillin sensitive Staphylococcus aureus, resistance pattern

A cross sectional study to assess nasal carriage of methicillin resistant Staphylococcus aureus in healthcare professionals in a tertiary care hospital

2020 ◽  
pp. 1-12
Author(s):  
Fibhaa Syed ◽  
Nasim Akhtar ◽  
Mohammad Ali Arif ◽  
Adil Ramzan ◽  
Rauf Niazi ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Healthcare Workers ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Tertiary Care ◽  
Nasal Carriage ◽  
Cross Sectional Study ◽  
Diffusion Method ◽  
Cross Sectional ◽  
Methicillin Resistant ◽  
Nasal Swabs

Abstract Objective: To determine the nasal carriage of staphylococcus aureus and methicillin-resistant staphylococcus aureus among healthcare workers in a tertiary care setting. Methods: The cross-sectional study was conducted at the Pakistan Institute of Medical Sciences, Islamabad, Pakistan, from April to July 2018, and comprised healthcare workers at the institution. Nasal swabs were collected and cultured on Mannitol salt agar. Mannitol fermenting colonies which were gram-positive cocci, catalase-positive and coagulase-positive were identified as staphylococcus aureus. Antibiotic susceptibility test was performed by modified Kirby-Bauer disc diffusion method. Methicillin resistance was detected using cefoxitin disc diffusion method. Data was analysed using SPSS 23. Results: Of the 210 nasal swabs, 52(24.76%) had a staphylococcus aureus growth, and, of them, 15(7.1%) were methicillin-resistant. No association could be established with either any single category of healthcare worker or an inter-department variation (p>0.05). Likewise, there was no association with age, gender, duration of service, smoking, co-morbidities, use of antibiotics in the preceding six months, treating a patient with methicillin-resistant staphylococcus aureus in the preceding six months and hospitalisation in the preceding year (p>0.05). Conclusion: The frequency of nasal carriage of methicillin resistant staphylococcus aureus amongst healthcare workers was regardless of the nature of their professional engagement. Key Words: Methicillin resistant staphylococcus aureus, Nasal carriage, Continuous...

scholarly journals Frequency of methicillin resistant staphylococcus aureus in a Tertiary care (Services Hospital) Lahore.

2020 ◽  
Vol 27 (03) ◽  
pp. 576-580
Author(s):  
Khadija Muneer ◽  
Saima Ayub ◽  
Jazab Aqeel ◽  
Surraya Jaffer ◽  
Taimia Ayub ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Morbidity And Mortality ◽  
Care Hospital ◽  
Biochemical Tests ◽  
Cross Sectional ◽  
Methicillin Resistant ◽  
Care Services

Staphylococcus aureus is a gram positive coccus responsible for severe morbidity and mortality as it causes community and hospital acquired infections. The Methicillin resistant Staphylococcus aureus is responsible for several difficult to treat infections in human. Objectives: To find out Frequency of Methicillin resistant Staphylococcus aureus in Patients in a tertiary care hospital of Lahore. Study Design: Cross-sectional study. Setting: Tertiary care (Services Hospital) Lahore. Period: Four months from 1st August 2017 to 30th November 2017. Material & Methods: A total of 2534 isolates were obtained during the period (1 August 2017 to 30 November 2017) from patients at a tertiary care hospital of Lahore. Specimen were inoculated on blood agar plates, strains obtained were confirmed for Staphylococcus aureus using conventional biochemical tests and oxacillin disk test was performed to confirm methicillin resistant Staphylococcus aureus. Result: Out of 104 Staphylococcus aureus isolates, methicillin resistant Staphylococcus aureus was 46 (44.2%) and methicillin sensitive Staphylococcus aureus was 58 (55.8%). Conclusion: Methicillin resistant Staphylococcus aureus is a big challenge for current health care system and this may be a cause of morbidity and mortality in community and hospital patients.

scholarly journals Inducible Clindamycin Resistant Staphylococcus aureus among Patients Attending Tertiary Care Centre: A Descriptive Cross-sectional Study

2021 ◽  
Vol 59 (243) ◽  
pp. 1111-1115
Author(s):  
Shanti Shanti ◽  
Sanjib Mani Regmi ◽  
Nabina Shrestha
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Care Center ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Clinical Samples ◽  
Tertiary Care Center ◽  
Sectional Study ◽  
Cross Sectional ◽  
Inducible Clindamycin Resistance

Introduction: Staphylococcus aureus, a superbug, resistant to multiple antibiotics led to growing interest in the usage of macrolide-lincosamide-streptogramin B antibiotics, which are now rapidly developing resistance. This study aims to find the prevalence of inducible clindamycin-resistant Staphylococcus aureus among obtained clinical samples from in-patient and out-patient departments of a tertiary care center. Methods: This is a descriptive cross-sectional study done in clinical samples from the in-patient and out-patient departments of a tertiary care center from September 2020-May 2021. Ethical clearance was taken from the Institutional Review Committee (Ref: 068/2077/2078). Staphylococcus aureus were isolated and antibiotic susceptibility tests were performed by disc diffusion method. Inducible clindamycin and methicillin resistance Staphylococcus aureus were detected using D-test and cefoxitin disc according to Clinical and Laboratory Standards Institute guidelines. Convenient sampling was done and the data was analyzed using Statistical Package for Social Sciences version 20. Point estimate at 95% confidence interval was calculated along with frequency and proportion for binary data. Results: Among a total of 141 Staphylococcus aureus isolated, the prevalence of inducible clindamycin resistant phenotype was 41 (29.1%) (21.6-36.59 at 95% Confidence Interval). Whereas, 30 (21.3%) were constitutive clindamycin resistant. The inducible 28 (47.5%) and 19 (32.2%) constitutive clindamycin resistance was higher among methicillin-resistant Staphylococcus aureus. Conclusions: The frequency of inducible clindamycin resistance among methicillin resistant Staphylococcus aureus was high, which alarms the use of macrolide-lincosamide-streptogramin B antibiotics in Staphylococcus aureus infections. Hence, D-test should be performed to detect inducible clindamycin resistance in routine testing to prevent treatment failure.

Phenotypic characterization and Molecular detection of Inducible and Constitutive Clindamycin resistance among Staphylococcus aureus isolates in a Tertiary Care Hospital

2021 ◽  
pp. 3799-3804
Author(s):  
Mahalakshmi G. ◽  
Neelusree P. ◽  
Kalyani M.
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Tertiary Care ◽  
Phenotypic Characterization ◽  
Clinical Samples ◽  
Resistance Pattern ◽  
Care Hospital ◽  
Methicillin Resistant ◽  
Inducible Clindamycin Resistance ◽  
Significant Difference

Background: Staphylococcus aureus is Gram positive cocci. The pyogenic bacteria which is responsible for a variety of diseases that ranges in severity from mild skin and soft tissue infections to life-threatening conditions such as endocarditis, pneumonia, and sepsis. There is a scenario of increasing Methicillin-resistant Staphylococcus aureus (MRSA) infections, the macrolide-lincosamide-streptogramin B (MLSB) group of antibiotics they have different structure with same mechanism of action which serves as one good alternative. There is a frequency of increasing Methicillin Resistant Staphylococcus aureus (MRSA) infections and their change in antimicrobial resistance pattern. There is a concern about use of this antibiotic in the presence of Erythromycin resistance because of the possibility of inducible resistance among the members of Macrolide, lincosamide, Strepto-gramin B (MLSB) group. The invitro resistance exhibited by Staphylococcus aureus to erythromycin, Clindamycin, and other drugs of MLSB groups is due to the expression of ribosomal methylases(erm) genes. The detection of inducible Clindamycin resistance can limit the effectiveness of these drugs. Objective of the study: To isolate of Staphylococcus aureus from various clinical samples to differentiate between Methicillin resistant Staphylococcus aureus (MRSA) and Methicillin sensitive Staphylococcus aureus (MSSA) by conventional methods. To detect inducible and constitutive Clindamycin resistance in Staphylococcus aureus isolates by D test. To detect ermA gene responsible for resistance by PCR. Methodology: This cross sectional study was done for a period of six months. Totally 106 Staphylococcus aureus isolates was obtained various clinical samples were processed using standard guidelines. Result: From the 106 isolates of Staphylococcus aureus 67(63.3%) were MSSA and 39(36.7%) were MRSA. D-test was positive in n=9 of the n=21 MRSA and n=17 of the n=85 MSSA, which denotes inducible Clindamycin resistance. N- 9 of MRSA and n=13(22%) of MSSA showed Constitutional Clindamycin resistance. The statistics show that there is a significant Difference in constitutive resistance between MRSA and MSSA. In India ermA gene is most prevalent, out of 22 d-test positive n=13 ermA gene were detected (n=3-MRSA and n=10-MSSA) by using conventional PCR. Conclusion: The MLSB family of antibiotics is one such alternative and CD is preferred. Clinical microbiology laboratories should report inducible Clindamycin resistance in Staphylococcus aureus and D-test can be used as a simple, auxiliary and reliable method to Delineate inducible and constitutive Clindamycin resistance in routine clinical laboratories.

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