diagnosed hyperthyroidism severe chronic obstructive pulmonary disease copd 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
myocarditis pulmonary embolism psvt panic attack atrial fibrillation pulmonary neoplasm unstable angina
Atrial fibrillation