• Hossein Khalili, Shadi Farsaei, Haleh Rezaee, and Simin Dashti-Khavidaki.
• Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. khalilih@tums.ac.ir
• Int J Clin Pharm. 2011 Apr 1; 33 (2): 281-4.

ObjectiveFrequency and type of medication errors and role of clinical pharmacists in detection and prevention of these errors were evaluated in this study.MethodDuring this interventional study, clinical pharmacists monitored 861 patients' medical records and detected, reported, and prevented medication errors in the infectious disease ward of a major referral teaching hospital in Tehran, Iran. Error was defined as any preventable events that lead to inappropriate medication use related to the health care professionals or patients regardless of outcomes. Classification of the errors was done based on Pharmaceutical Care Network Europe Foundation drug-related problem coding.ResultsDuring the study period, 112 medication errors (0.13 errors per patient) were detected by clinical pharmacists. Physicians, nurses, and patients were responsible for 55 (49.1%), 54 (48.2%), and 3 (2.7%) of medication errors, respectively. Drug dosing, choice, use and interactions were the most causes of error in medication processes, respectively. All of these errors were detected, reported, and prevented by infectious diseases ward clinical pharmacists.ConclusionMedication errors occur frequently in medical wards. Clinical pharmacists' interventions can effectively prevent these errors. The types of errors indicate the need for continuous education and implementation of clinical pharmacist's interventions.

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