Background: Drug change (DC) is a common challenge in Danish hospitals. It affects the work of hospital personnel and has potentially serious patient safety consequences. Focus on medication safety is becoming increasingly important in the prevention of adverse events. The aim of this study is to identify and describe patient safety challenges related to DCs, and to explore potential facilitators to improve patient safety in the medication process in Danish hospital setting. Method: Two qualitative methods were combined. Data were obtained from the Danish Patient Safety Database (DPSD) containing incidents reports of adverse events related to DCs. Additionally, five semi-structured focus group interviews with hospital personnel (doctors, nurses, pharmacists and pharmacy technicians) from the five regions of Denmark were held. Results: The DPSD search identified 88 incidents related to DCs due to tender or drug shortage. The incidents were linked to prescribing errors, incorrect dose being dispensed/administered, and delayed/omitted treatment. Four themes from the interviews emerged: (1) challenges related to the drug itself; (2) situational challenges; (3) challenges related to the organization/IT systems/personnel; (4) facilitators/measures to ensure patient safety. Conclusion: DC is as a complex challenge, especially related to drug shortage. The results allow for a deeper understanding of the challenges and possible facilitators of DCs on the individual and organizational level. Pharmacy personnel were identified to play a key role in ensuring patient safety of DCs in hospitals. Indeed, this emphasizes that pharmacy personnel should be engaged in developing patient safety strategies and support hospital personnel around drug changes.

Background:Some studies indicate a reduced risk of serious upper gastrointestinal bleeding (UGIB) for users of beta-blockers, but the association remains to be confirmed in larger studies and characterized with respect to differences among beta-blockers. We aimed to assess whether beta-blocker use decreases the risk of UGIB.Methods:We conducted a register-based, population-based case-control study in Denmark. We identified cases with a first validated discharge diagnosis of UGIB during the period 1995–2006. Controls were selected by risk-set sampling in a ratio of 10:1. We estimated crude and adjusted odds ratios (ORs) of the association between current beta-blocker use and the risk of UGIB by using conditional logistic regression and further stratified by selective and non-selective beta-blockers, respectively.Results:We identified 3571 UGIB cases and 35,582 controls. Use of beta-blockers was not found to be associated with a decreased risk of UGIB (adjusted OR 1.10; 95% CI: 1.00–1.21). The association remained neutral after stratification by selective and non-selective beta-blockers, and by single beta-blocker substances. Similarly, we found no association between current beta-blocker use and the risk of UGIB within different subgroups.Conclusions:We found no association between beta-blocker use and UGIB.