Implementing and Evaluating ActionADE to Transform Medication Safety Among Patients With Adverse Drug Reactions

Medication use is rising due to an aging population and expanding treatment indications for chronic diseases. Simultaneously, adverse drug events-harmful and unintended events related to medication use or misuse-have increased. In Canada, adverse events to outpatient medications cause over two million emergency department visits and 700,000 hospital admissions, costing over $1 billion in healthcare expenditures annually. Optimizing the benefits of medications while limiting their potential for harm is a public health priority across patient populations, health settings and medical disciplines.

Patients with adverse drug events often seek care in hospitals due to the unexpected and serious nature of these events. After assessment and treatment, patients are discharged back into the care of a community-based provider who often cannot access the hospital's medical record, may not receive a legible or detailed discharge summary, and is at risk of either re-starting the culprit medication for chronic disease management in the case of an adverse drug reaction. The investigators developed ActionADE to address this type of information discontinuity. ActionADE was integrated to a province-wide network that links all pharmacies in British Columbia to a central data system, allowing users to see their patient's medication dispensing history.

The investigators will conduct a triple-blind randomized controlled trial to evaluate the effectiveness of ActionADE on preventing subsequent adverse drug reactions. The trial will take place in two urban tertiary care (Vancouver General and Saint Paul's Hospitals) and one urban community hospital (Lions Gate Hospital) within the Greater Vancouver area, in British Columbia, Canada. Other hospitals may be added to accelerate recruitment into the trial if approved by the British Columbia Ministry of Health.

The primary objective of the main trial is to evaluate the effect of providing information continuity about adverse drug reactions using ActionADE on culprit drug re-dispensations over 12 months compared to standard care. Secondary objectives are to evaluate the effect on outpatient and emergency department visits, admissions, hospital-days and mortality.