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 feel heart beating irregularly disorganized pattern traveled country last 4 weeks symptoms increased physical exertion alleviated rest
myocarditis pulmonary embolism atrial fibrillation guillain-barré syndrome myasthenia gravis psvt unstable angina
Atrial fibrillation