heart or cardiac cardiovascular surgery concept photo. doctor holding in gloved hand scalpel near red card figure of heart. treatm

aorta artery atherosclerosis background bypass card cardiac cardiology cardiovascular child concept congenital cor coronary disease doctor endocarditis figure glove hand heart hold idea ischemic medicine metal muscle open operation patient photo prevention procedure professional protection red rheumatic risk scalpel stenosis strategy surgeon surgery transplantation treatment use valve vessel white