A prospective study on the utilization pattern of antimicrobial agents among inpatients in the medicine ward of K. R. Hospital, Mysore Medical College and Research Institute
DOI:
https://doi.org/10.18203/2319-2003.ijbcp20261952Keywords:
Antimicrobial utilization, Drug utilization study, WWHO prescribing indicators, Rational use of medicines, Cephalosporins, Respiratory tract infectionAbstract
Background: Drug utilization studies are crucial to assess prescribing patterns and promote rational use of antimicrobial agents, thereby reducing resistance and treatment costs.
Methods: A prospective observational study was conducted on 100 inpatients receiving antimicrobial therapy. Data were collected from patient records and analyzed using descriptive statistics to determine demographic details, prescription patterns and WHO core prescribing indicators.
Results: Of the 100 patients, 56% were female and 44% were male. Respiratory tract infections were the most common diagnosis (32%), followed by gastrointestinal infections (23%), urinary tract infections (15%) and viral fever (11%). Cephalosporins were the most frequently prescribed antimicrobials with ceftriaxone in 38% of prescriptions, followed by penicillin (28%), fluroquinolones were-(15%), aminoglycosides-(8%) and macrolides-(6%), carbapenems-5%. Generic prescriptions accounted for only 62% of total drugs. Furthermore, 78% of drugs were prescribed from the essential drug list. The average number of drugs per prescription was 4.2.
Conclusions: Antimicrobial utilization showed predominant use of cephalosporins and piperacillin combinations. Although most drugs were prescribed from the essential list, adherence to rational prescribing practices can be improved through antibiotic policies and regular prescription audits to minimize resistance and optimize cost-effectiveness.
References
Laxminarayan R, Duse A, Wattal C, Zaidi AK, Wertheim HF, Sumpradit N, et al. Antibiotic resistance—the need for global solutions. Lancet Infect Dis. 2013;13:1057-98.
Ayukekbong JA, Ntemgwa M, Atabe AN. The threat of antimicrobial resistance in developing countries: causes and control strategies. Antimicrob Resist Infect Control. 2017;6:47.
Kotwani A, Holloway K. Trends in antibiotic use among outpatients in New Delhi, India. BMC Infect Dis. 2011;11:99.
Srishyla MV, Naga Rani MA, Venkataraman BV. Drug utilization of antimicrobials in the inpatient setting of a tertiary hospital. Indian J Pharmacol. 1994;26:282-87.
Hogerzeil HV. Promoting rational prescribing: an international perspective. Br J Clin Pharmacol. 1995;39:1-6.
WHO Collaborating Centre for Drug Statistics Methodology. Guidelines for ATC classification and DDD assignment. Oslo: World Health Organization. 2021. Available at: https://www.whocc.no/atc_ddd_index_and_guidelines/guidelines/. Accessed on 08 April 2026.
Sharma S, Chopra V, Choudhury DK. Antimicrobial drug utilization in medicine department of a tertiary care teaching hospital. J Clin Diagn Res. 2013;7:652-56.
Thiruthopu NS, Mateti UV, Bairi R, Reddy PY, Vargheese S. Drug utilization pattern in an emergency department of a tertiary care teaching hospital. Int J Pharm Sci Res. 2014;5:585-91.
Ramesh R, Kumar A, Shetty V. Drug utilization study of antimicrobials in a tertiary care hospital, Karnataka. Int J Basic Clin Pharmacol. 2019;8:702-7.
Sharma P, Gupta S, Mehta V. Prescribing pattern of antibiotics in hospitalized patients: a prospective study. Indian J Pharmacol. 2020;52:36-40.
Kumar S, Rao R, Patil N. Utilization pattern of antimicrobials in inpatients of medicine ward in Mysore. J Clin Diagn Res. 2018;12:FC05-9.
Rani K, Thomas A, Joseph J. Evaluation of antibiotic prescribing using WHO prescribing indicators in a tertiary care hospital, Bangalore. Natl J Physiol Pharm Pharmacol. 2019;9:764-68.
Basu S, Nair R, Prasad R. Antimicrobial utilization and resistance pattern in tertiary care hospitals in South India. J Pharmacol Pharmacother. 2021;12:97-103.
Patel V, Sharma R, Singh P. Prescribing by generic versus brand names in Indian hospitals: a multicenter study. J Family Med Prim Care. 2018;7:1493-98.