Ключевые слова: activity, app, awareness, beat, blood, cardiac, cardio, cardiogram, cardiograph, cardiology, care, checkup, cycle, diastole, disease, donor, ecg, electrocardiogram, emergency, emotion, emotional, flat, frequency, health, healthcare, heart, heartbeat, hearthealth, icon, life, line, measurement, medical, monitor, online, outline, pacemaker, patient, pressure, pulse, rate, red, rhythm, support, systole, test, wave,