DRUG PRESCRIBING PATTERN AND PRESCRIPTION ERROR IN ELDERLY: A RETROSPECTIVE STUDY OF INPATIENT RECORD
2011
Background: Older people are potentially at greater risk of medication error. Gaining insight into the physicians prescribing pattern in order to identify prescribing problem is the fundamental step in improving the quality of prescription and patient care. Objectives: To analyze drug use pattern and study elderly inpatient file for prevalence and frequency of occurrence of some predetermined prescribing errors. Method: A retrospective study of elderly (65 years and older) inpatient record was conducted from April to June, 2010. WHO core drug prescribing indicator was used to evaluate prescription pattern. Prescription errors were categorized as errors in prescription writing and errors of commission (ignoring drug interactions, use of potentially inappropriate medication). Results: A total of 305 medical files were studied. 211 were male and 204 were younger elderly (65‐ 74 years). 2985 drugs were prescribed (average exposure/ patient: 9.8). 84% of drugs were prescribed by generic name. Percentages of drugs prescribed from National essential drug list and WHO list were 75% and 55 % respectively. 1233 errors in prescription writing were identified. Route, ending date of therapy, and signature of prescribing doctor were most missed items (missing in 10.2%, 7%, and 12% of drug prescribed respectively). 5% of drugs names were written with unacceptable abbreviations while use of error prone abbreviations, symbols and dose designations was 0.27% per prescribed items. 145 patients were prescribed at least one potential inappropriate medication as determined by Beer’s criteria. Medication prescribed to 88 elderly patients had at least one potential chance for drug‐drug interaction. Conclusion: Frequency of occurrence of prescription errors found during th e study can be rated high. T he prescription pattern and the prescription errors have indicated the need to establish proper system of recording and analyzing therapy before writing a prescription in order to promote rational drug therapy in elderly. Further comprehensive studies on medication error are necessary to anticipate the scale of problem and their economic impact.
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