Ключевые слова: analysis, attack, background, beat, blue, canvasses, cardiac, cardio, cardiogram, cardiograph, cardiologist, cardiology, care, chart, clinic, close, closeup, concept, consult, curve, diagnosis, disease, doctor, electrocardiogram, exam, frequency, graph, graphic, health, health care, healthy, heart, heartbeat, hospital, index, jubes, line, medical, medicine, nobody, paper, patient, printout, pulse, rate, rhythm, science, test, trace, up,