Ключевые слова: abnormal, arrest, arrhythmia, arteries, assistance, attack, beat, blocked, cardiac, cardiology, care, checkup, chest, concept, conceptual, condition, coronary, death, diagnose, disability, disease, doctor, ecg, ekg, fatal, fibrillation, graph, health, healthy, heartbeat, hospital, impulse, irregular, issue, life, medic, medical, medicine, pattern, rapid, remedy, rhythm, risk, sign, slow, stroke, symbol, symptoms, treatment, valves,