Ключевые слова: aid, analysis, analyze, attack, awareness, beat, blood, cardio, cardiogram, cardiograph, cardiologist, cardiology, care, cellphone, chart, curve, diagnosis, ecg, ekg, electrocardiogram, electronic, emergency, frequency, healthcare, heart, heartbeat, hospital, icon, illness, illustration, measurement, medical, monitor, paramedic, patient, pressure, pulse, rate, rescue, rhythm, screen, signal, smartphone, stress, technology, test, wave,