ADR events including monitoring, supervising and reporting activities in Bach Mai Hospital was retrospectively studied on the basis of collection and classification of ADR events by the following criteria: patient age, route of drug administration, drug category, clinical manifestations and suffered organs, as well as ADR and ADR records from various departments in the hospital during 2006-2008. Notably, the activities of monitoring, supervising and reporting of ADR events become routine operations those days. In the 2006-2008 period, all the units of the Bach Mai Hospital carried out these activities creating a total of 813 ADR reports accounting for 0.36 percent of the total patient records. However, in each year of these, some entities did not report ADRs. A number of reports had sufficient information, but 51.7 percent reports were lack of effects of ADR, 5.5 percent did not stated the route of drug administration that caused ADR. ADR occurred with patients of all ages and mostly of 16-60 (54.4 to 74.5 percent). ADRs were recorded in all the routes of drua administration the highest ratio was for oral administration (39.5-42.1 percent). Many drug categories caused ADR, antibiotic drugs were the most (approximate 50 percent) with Betalactam group was seen at the highest rate (78.3 percent). All the organs were affected by ADR, in which disorders of the skin and subcutaneous tissues were most commonly reported ( 70 percent). Almost ADR completely recovered (averaged at 47.6 percent). However, in these 3 years there occurred 6 deaths due to ADR.
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