Abstract
Introduction
After having been in the nursing profession for many years, both in secondary and primary sector, I have learned that there are many medication errors in health care. This has caught my interest especially since the health care sector has large objective to prevent these medication errors. Medication errors often occur when patients arrive (admission) at or leave (discharge) the hospital. I have therefore chosen to focus on these scenarios. There are many initiatives that support the reduction of medication errors e.g. Operation Life, the Danish Quality Model and Common Medication Card (FMK). In this project, I put the focus on how the workflow will be affected and what challenges and problems the organization faces when doctors start using FMK.

Methods and results
In what follows, I first explained the occurrence and preventive measures in relation to medication errors in the Danish health sector. Next, I described the challenges and the problems I see in relation to the implementation of a national common medication card. I have examined the impact that FMK will have on work processes at a larger hospital when FMK is introduced as a new technology. I did this by mapping the current workflows through an observational study of two physician's workflow in medication process at admission and discharge on an acute admissions ward at a major hospital and repeated the procedure three months after FMK was introduced.
The results are used to construct two workflow diagrams, one with workflow, as they were before the introduction of FMK and the workflow after the implementation. Subsequently I have made a comparison of working processes before and after introduction of FMK, and identified areas where work processes change with FMK.
Based on the areas where FMK will change the existing processes, I have come up with suggestions on which problems and challenges a department can meet due to the deployment of FMK.

Discussion
FMK is currently being rolled out in selected regions in Denmark. Early experiences show that it appears that it can help to prevent medication errors in the admission and discharge scenarios. Some regions have pilot projects running right now and getting ready to deploy FMK. The plan is to deploy FMK in all regions in 2011, but time will tell if the schedule will hold. Whether it will become a success to introduce such a large and complex project depends on how it is going to be deployed, and if doctors can see the usefulness of the FMK system.

Acknowledgements
Thanks to nurses, project managers and doctors in the region that has willingly participated in my studies and helped with important information and inspiration. Thank you to my supervisor Sten Christoffersen, who contributed with constructive criticism along the way whenever I needed it.