Ключевые слова: angina pectoris, arrhythmia, atrial fibrillation, cardiac, cardio, cardiogram, cardiology, cardiovascular, care, chest, device, diagnose, diagnostic, disease, doctor, ecg, ekg, electrocardiogram, electrocardiography, electrode, electrodes, equipment, exam, examination, health, healthcare, heart, heart attack, heart beat, holter, hospital, hypertension, illness, medical, medicine, monitor, pacemaker, patient, presure, pulse, rate, recorder, rhythm, scanner, sensor, sick, tachycardia, test, thorax, treatment,