Internet-based Treatment of Stress and Anxiety in Myocardial Infarction With Non-obstructive Coronary Arteries

This study is testing an internet-based therapy program to reduce stress and anxiety in people who had a heart attack with no visible blockages (called MINOCA) or a stress-related heart condition called takotsubo syndrome. The program is delivered online, making it accessible from home. **You may be eligible if...** - You are 35–80 years old - You were hospitalized for a heart attack with no significant blockages (MINOCA) or takotsubo syndrome confirmed by heart catheterization - You have a normal heart rhythm (sinus rhythm) on your ECG at admission - You scored high on stress or anxiety questionnaires during your hospital stay - You read and write Swedish and have internet access **You may NOT be eligible if...** - Your heart condition is caused by myocarditis, pulmonary embolism, or a spontaneous coronary artery tear - You have another serious heart muscle disease (cardiomyopathy) - You had a type 2 heart attack (caused by another illness, not a blockage) Talk to your doctor to see if this trial is right for you.