Outpatient Prescription Intervention Activities by Pharmacists in a Teaching Hospital
Abstract
Prescriptions with prescribing errors received by an outpatient pharmacy of a teaching hospital were sampled. The types of pharmacist interventions on problematic prescriptions and its outcome were identified and documented. From a total of 6340 prescriptions processed by the outpatient pharmacy in a one-week period, 43 prescriptions (0.68%) required interventions by the pharmacy staff. These included 54% of the prescriptions that were incomplete or inadequately written (errors of omission) and 46% that contained the wrong drug, dose regimen, strength and dosage form (errors of commission). A total of 62 types of action were taken by the pharmacy staff to resolve the 43 problematic prescriptions. These include contacting the prescribers concerned (24.2%), clarifying with the patient or his/her representative (19.4%), contacting the prescriber’s nurse (17.7%) and checking the patient’s appointment or identity card (4.8%). Of the 43 problematic prescriptions, 48.8% were clarified without any change and dispensed while 32.6% were changed and dispensed. The study reinforces the importance of prescription screening and interventions by pharmacists in minimising preventable adverse events attributed to medication errors. It also emphasizes the necessity of interdisciplinary communication and cooperation in identifying and resolving prescribing errors and irregularities in order to achieve optimal therapeutic outcomes for the patient.