Ключевые слова: analysis, attack, background, blood, cardiac, cardiogram, cardiologist, cardiology, care, check, clinic, close, closeup, computer, concept, diagnose, diagnosis, diagnostic, disease, doctor, electrocardiogram, emergency, equipment, examination, graph, hands, health, healthcare, healthy, heart, history, hospital, human, illness, leaf, life, macro, medic, medical, medicine, office, paper, patient, pulse, rhythm, technology, test, therapy, treatment, waves,