diagnosed hyperthyroidism known issue heart valves experiencing shortness breath difficulty breathing significant way diabetes 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 traveled country last 4 weeks symptoms increased physical exertion alleviated rest
pulmonary embolism psvt myocarditis panic attack atrial fibrillation unstable angina
Atrial fibrillation