Karolinska University Hospital

This study tests two heart procedures in 200 people with persistent atrial fibrillation and scarred heart tissue. One group gets standard vein isolation; the other also gets ablation of scarred areas. The goal is to see which approach better prevents irregular heartbeats for a ye…

This study looks at whether teaching children with asthma special breathing techniques can improve their quality of life and help them be more active. About 40 children aged 10-17 with asthma and dysfunctional breathing will either get breathing training plus activity advice, or …

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

This study aims to improve sleep for patients in the hospital by training nurses and assistant nurses. Researchers will introduce a sleep guideline, a web-based course, and special 'sleep champions' on certain hospital units. They will then interview staff and survey both staff a…

This study is collecting information from 400 people with abdominal aortic aneurysms (a bulge in the main artery in the belly) to see if a new measurement method can better predict how fast the aneurysm grows. The goal is to create more personalized check-up schedules. Participan…