diagnosed hyperthyroidism known issue heart valves experiencing shortness breath difficulty breathing significant way significantly overweight compared people height high blood pressure take medications treat high blood pressure known heart defect feel heart beating fast racing irregularly missing beat feel palpitations traveled country last 4 weeks symptoms increased physical exertion alleviated rest
pulmonary embolism psvt myocarditis panic attack atrial fibrillation unstable angina
Atrial fibrillation