diagnosed hyperthyroidism known issue heart valves severe chronic obstructive pulmonary disease copd experiencing shortness breath difficulty breathing significant way high blood pressure take medications treat high blood pressure heart attack angina chest pain 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
pulmonary embolism atrial fibrillation myocarditis acute pulmonary edema guillain-barré syndrome psvt unstable angina
Atrial fibrillation