Karolinska University Hospital

This study tests two different ablation procedures for people with persistent atrial fibrillation (a type of irregular heartbeat). Participants are randomly assigned to either standard treatment (isolating the pulmonary veins) or standard treatment plus additional ablation of sca…

Many patients sleep poorly in the hospital. This study tests whether a sleep guideline and a web-based training course can improve nurses' and assistant nurses' knowledge about sleep. Researchers will interview sleep champions and survey staff and patients at Karolinska Universit…

This study is collecting data from 400 people with abdominal aortic aneurysms to improve how doctors predict aneurysm growth. The goal is to create more personalized monitoring plans. Participants will have regular check-ups and imaging tests to track changes over time.

This study looks at whether people with a parent, sibling, or child who had an abdominal aortic aneurysm (AAA) are more likely to develop one themselves. Researchers are using Sweden's national health records to compare the risk in these family members versus the general populati…