Health Care Associated Infection and Trend of Antimicrobial Resistance in Tertiary Care Hospital -A Study in Low Income Setting

Background Antimicrobial resistance (AMR) and healthcare-associated infections (HAIs) are among the most serious public health problems and overall estimate indicates that at any point, over 1.4 million people are suffering from health care associated infection globally. According to the WHO report, the frequency of nosocomial infection is 10% in South East Asia where as 7% in developed countries. The increasing trend of AMR in pathogenic bacteria leads to complication to treat HAIs and failure in treatment and rise in mortality. Objective The study was conducted with the objective of to explore the incidence of different types of HAIs and AMR pattern in the patients admitted in a tertiary care hospital. Method The cross-sectional study was conducted at the tertiary care hospital and the patient who are one year or older and admitted for more than 48 hours were included in this study. The criteria for classification of HAIs were adapted from Centers for Disease Control. All the samples were collected then antibiotic sensitivity testing was conducted according to CLSI standards. Data were collected using a structured data collection form. Data were entered in EpiData software and analyzed using SPSS version 22. Result Among 2326 patients, female was slightly higher than male patients, where 77 (3.3%) patients experienced at least one episode of HAIs. The surgical site infection (71.42%) is the most common infection followed by Catheter Associated Urinary Tract Infection (18.18%) and Health Care Associated Pneumonia (6.49%). Mean hospitalization days is higher with HAI (14.5 days) compared to non-HAI (6.6 days). Out of 909 specimens, urine, sputum and blood were higher in numbers, where 217 bacterial isolates were isolated with Escherichia coli (83 isolates) was the most common bacteria. It is found that Escherichia coli bacterial isolates were resistance to most common antibiotics. Conclusion The study concludes that surgical site infection is the most common healthcareassociated infection and Escherichia coli is the most common bacteria responsible for HAIs. Further, surgical site infection being the most common infection, there is an urgent need to take effective infection prevention and control prevention.