Ключевые слова: analysis, arrhythmia, attack, background, beat, cardiac, cardio, cardiogram, cardiologist, cardiology, care, checkup, clinic, closeup, decorative, diagnose, diagnosis, disease, doctor, ecg, electrocardiogram, emergency, flat, graphic, health, healthy, heart, heartbeat, hospital, illness, lay, life, medical, medicine, object, paper, prevention, print, pulse, record, red, report, rhythm, stethoscope, table, test, testing, therapy, tool, treatment,