[Detecting adverse drug events during the hospital stay]. / Detección de acontecimientos adversos producidos por medicamentos durante la estancia hospitalaria.

INTRODUCTION: The principal objective was to determine the incidence rate of adverse drug events (ADEs) in hospitalised patients and evaluate the event prevention percentage. METHODS: Multi-centre, prospective observational study lasting four months, performed in five hospitals providing different levels of care. We included all adult patients who were admitted to one of the selected centres for longer than 48 hours and who required pharmacological treatment. ADEs were identified by direct observation and the use of previously defined alarm signals. The Karch-Lasagna scale was used to determine the causality relationship, and the Schumock and Thornton questionnaire adapted by Otero was used to evaluate ADE preventability. Preventable drug-induced adverse events were classified according to the taxonomy that the Ruiz-Jarabo 2000 group defined, and coordinated by ISMP-Spain. RESULTS: We included 1,550 patients, 159 of whom experienced at least one ADE (10.3 %). The preventability percentage was 51.6 %, which represented 5.3 % of the total sample. The endocrine system (34.8 %) and the cardiovascular system (20.7 %) were the most affected by preventable ADEs. Antibiotics were responsible for 16.5 % of all ADEs. 9.3 % of all preventable ADEs were triggered by use of opiates. The vast majority of preventable ADEs (36.3 %) resulted from omitting a necessary medication. Only 4.4 % of preventable ADEs are considered to be serious. CONCLUSIONS: There is a high incidence rate of ADEs during patients' hospital stay (10.3 %), and half of them (51.6 %) could have been prevented. Implementation of an automatic alarm system and certain best practices for problem spots along the care circuit will help detect and avoid preventable ADEs.

[Pharmaceutical care for drug-related problems in inpatients]. / Atención farmacéutica en los problemas relacionados con los medicamentos en enfermos hospitalizados.

UNLABELLED: Drug therapy-induced high morbidity results in pharmacists participating in the prevention and solution of drug-related problems (DRPs). OBJECTIVE: To assess DRP prevalence amongst inpatients, and the clinical results derived from pharmaceutical intervention. METHODS: DRPs detected during 6 months at Hospital Comarcal de Sant Bernabé were recorded and classified, and their severity established. Pharmaceutical intervention was evaluated by using two codes: impact and clinical significance. Interventions were reassessed by another pharmacist and a physician, and the degree of agreement was calculated. RESULTS: The prevalence of DRPs amongst inpatients was 10.8%. A total of 425 DRPs was detected, with a mean of 1.51 DRPs/patient. The highest percentage involved inappropriate drugs (26%), overdosing (22%), and inadequate dosing (22%). Eighty-four percent of DRPs were a severity level 2. Drugs mainly involved were antibiotics (21.6%), anti-ulcer agents (21.8%), and analgesic-anti-inflammatory compounds (8.1%). In all, 58% of interventions impacted on treatment effectiveness, and 42% on toxicity. Intervention acceptance was 91%. Seventy percent of interventions were appropriate and highly significant. The percentage of agreements in reassessments exceeded 88%. CONCLUSIONS: Pharmaceutical care allows DRPs to be prevented and solved. Methodology validation makes it safer in daily practice.