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Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
Published on: May 8, 2013
Evaluation of Antibiotic Sensitivity in Methicillin-Resistant Staphylococcus aureus Isolates From Clinical Specimens
Payal P Patil1, Harsha V Patil1, Satish Patil1
1Department of Microbiology, Krishna Institute of Medical Sciences, Krishna Vishwa Vidyapeeth (Deemed to Be University), Karad, IND.
Background:
Common Gram-positive bacteria Staphylococcus aureus can cause infections ranging from minor skin conditions to serious illnesses like sepsis.Methicillin-resistant S. aureus (MRSA) emerged in the 1960s and now causes over 50% of hospital infections. In India, MRSA prevalence ranges from 25% in the west to 50% in the south. Contributing factors include prolonged hospital stays and indiscriminate antibiotic use. This study investigates the prevalence and antibiotic resistance patterns of MRSA in clinical isolates from a hospital in Karad. MRSA's resistance to multiple antibiotics, including vancomycin, poses significant treatment challenges, with limited therapeutic options such as vancomycin, linezolid, daptomycin, and teicoplanin remaining effective. The antibiotics mentioned provide a broader context for understanding MRSA resistance. In this study, only those specifically relevant to the hospital's data have been included in detail in the result table antibiogram of MRSA.
Material And Methods:
A two-year laboratory-based analysis of MRSA strains in a hospital that provides tertiary care was conducted to assess their antibiotic susceptibility profiles.
Results:
In all, 100 isolates of MRSA were examined for patterns of antibiotic susceptibility in various clinical specimens. Among these 41 (41%) were from pus samples, 18 (18%) from wound swabs/discharge, 15 (15%) from urine, 13 (13%) from blood, 4% from sputum, and 3% from tips were found to have smaller percentages than umbilical swabs (2 (2%)) and tissue (1 (1%)) and vaginal swabs( 1 (1%)) and sinus tract samples (1 (1%)). The frequency of MRSA strains was more in males (59%). Linezolid showed the highest sensitivity at 86%.
Conclusion:
This study highlights the growing challenge of MRSA and other resistant bacteria in hospital settings, complicating treatment choices. Effective MRSA management requires stringent antibiotic policy, infection control procedures, and thorough susceptibility testing. These strategies are critical to preserving viable treatment options and combating antibiotic resistance in healthcare environments.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) is a growing threat in hospitals, with linezolid showing 86% sensitivity. Effective management requires strict infection control and antibiotic policies to combat resistance.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Clinical Pharmacy
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) is a significant cause of hospital-acquired infections, with high prevalence in India.
- Factors like extended hospital stays and antibiotic misuse contribute to MRSA spread.
- MRSA's resistance to multiple antibiotics, including vancomycin, presents major therapeutic challenges.
Purpose of the Study:
- To investigate the prevalence and antibiotic resistance patterns of MRSA in clinical isolates from a tertiary care hospital in Karad.
- To assess the susceptibility of MRSA strains to various antibiotics.
Main Methods:
- A two-year laboratory-based analysis of MRSA strains was conducted.
- Antibiotic susceptibility profiles of 100 MRSA isolates from diverse clinical specimens were determined.
Main Results:
- MRSA was most frequently isolated from pus (41%) and wound swabs (18%).
- The prevalence of MRSA was higher in males (59%).
- Linezolid demonstrated the highest sensitivity against MRSA isolates at 86%.
Conclusions:
- MRSA poses a significant challenge in healthcare settings, complicating treatment decisions.
- Effective MRSA management necessitates robust antibiotic stewardship, stringent infection control measures, and comprehensive susceptibility testing.
- These strategies are crucial for preserving effective treatment options and mitigating antibiotic resistance.
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