double exposure of medical stethoscope and cardiogram on light blue. cardiac therapeutics assistance, pulse beat measure

impulse emergency background beat blue cardiac cardiology care chart check checkup chest clinic close concepts copy space diagnose diagnosis disease doctor double exposure ecg electrocardiogram equipment examination focus graph health healthcare healthy hear heart heartbeat hospital isolated line listen medical medication metal monitor pulse rate rhythm science stethoscope surgery test tool treatment cardiogram light blue therapeutics assistance measure arrhythmia pacemaker concept space