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 feel heart beating irregularly disorganized pattern traveled country last 4 weeks symptoms increased physical exertion alleviated rest
myocarditis atrial fibrillation acute dystonic reactions myasthenia gravis guillain-barré syndrome psvt sle
Atrial fibrillation