doctor using stethoscope checking heart cartoon character sick in bed at the hospital

admit arrhythmias artery attack bed blood body cardiologists cardiomyopathy cartoon character check checking chest coronary defects diagnose disease doctor events flat health healthcare heart heartbeat high hospital human hypertension hypertensive ill illustration immunity infarction infection injection internal ischemic myocardium organ pain palpitation people physical pressure save sick sickness sign stethoscope symbol symptoms treatment unhealthy using valvular vector