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J Clin Diagn Res. 2015 Feb;9(2):FC10-3. doi: 10.7860/JCDR/2015/11264.5608. Epub 2015 Feb 1.

Evaluation of potential drug - drug interactions in general medicine ward of teaching hospital in southern India.

Author information

1
Lecturer, Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, UCSI University , Cheras, Kuala Lumpur, Malaysia .
2
Pharm D Intern Students, Department of Pharmacy Practice, The Oxford College of Pharmacy , Bangalore, Karnataka, India .
3
Assistant Professor, Department of Pharmacy Practice, The Oxford College of Pharmacy , Bangalore, Karnataka, India .

Abstract

BACKGROUND:

Polypharmacy is considered as one of the major risk factors in precipitation of drug-drug interactions (DDIs). Patient population at high risk include the elderly and patients with co morbidities as they are usually prescribed with more number of drugs. Critical evaluation of such prescriptions by pharmacist could result in identification and reduction of such problems.

OBJECTIVE:

The study aims to assess the prevalence, severity and significance of potential DDI (pDDI) in general medicine wards of South Indian tertiary care teaching hospital.

MATERIALS AND METHOD:

A prospective observational study was conducted in a general medicine ward for a period of six months (September 2012 to February 2013). The socio-demographic, clinical characteristics and medication prescribed was documented in a specially designed form. Analysis was carried out to assess the prevalence, severity and significance of identified pDDIs using Micromedex. Descriptive and Univariate analysis were used to report the findings.

RESULTS:

A total of 404 case records reviewed, 78 (19.3%) patients had pDDIs. A total of 139 (34.4%) pDDIs were reported during the study period. Majority (53.95%, n=75) of the interactions were moderate in intensity and significant in nature (53.23%, n=74). Positive association between number of pDDIs and age was observed.

CONCLUSION:

The prevalence of pDDIs was 19.3% which is lesser then previously reported studies from India. Patient with more co-morbidities and elders were observed with more pDDIs. The study highlighted the need to effectively monitor and patients prevent pDDIs to improve patient safety.

KEYWORDS:

Drug-drug interaction; Hospitalised patients; Polypharmacy

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