Ключевые слова: analysis, analyze, arrest, attack, backdrop, background, beat, black, blue, body, cardiac, cardio, cardiogram, cardiology, care, chart, clinic, close up, closeup, concept, detail, diagnosis, ecg, ekg, electrocardiogram, electrocardiograph, frequency, graph, graphic, health, healthcare, healthy, heart, hospital, life, medical, medicine, nobody, paper, pattern, people, printout, pulse, rhythm, science, technology, test, trace, unfocused,