STUDY OF ANTIBIOTIC-RESISTANCE AND SENSITIVITY PATTERN IN A TERTIARY CARE TEACHING HOSPITAL

Introduction: Antibiotics are helpful in bacterial infection control and management. Irrational antibiotic use leads to resistance, which puts modern medicines achievements at risk. This study aims to know antibiotic resistance and sensitivity patterns and to assess possible factors that favor the development of antibiotic resistance. Methods: It is a retrospective observational study. Data collected from June 2019 to May 2020 from the culture & sensitivity records of various clinical isolates at the Microbiology department of SMC, Vijayawada, and analyzed by descriptive statistics. Results: Total samples collected 2905. Only746 samples showed significant growth. Most commonly, isolated organisms were from Pus and Body fluids Staphylococcus aureus (31.16%), Klebsiella (23.02%), from blood samples Staphylococcus aureus (44%,) Klebsiella (32%), from urine samples Escherichia coli (27.31%),Staphylococcus aureus (16.66%). Bacteria isolated from, Blood and Pus & body fluid samples showed more resistance to Amoxicillin + Clavulanic acid, 60% &58.60%, and urine samples showed more resistance to Norfloxacin69.44%. Conclusion: In this study, bacteria isolated from, blood, pus, and body fluid samples showed more resistance to Amoxicillin + Clavulanic acid, from urine samples showed more resistance to Norfloxacin. Parenterally used drugs like aminoglycosides and vancomycin have retained their sensitivity but bacteria also showed resistance to Imipenem, Vancomycin, new combinations like Cefoperazone + Sulbactam. A culture & sensitivity test and following antibiotic stewardship guidelines before prescribing antibiotics will give good results to prevent antibiotic resistance.