Definition - open-heart surgery

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open-heart surgery
  1. heart surgery in which the rib cage is spread open, the heart is stopped and blood is detoured through a heart-lung machine while a heart valve or coronary artery is surgically repaired
  2. heart surgery in which the rib cage is spread open and surgery to fix a heart valve or repair a coronary artery is performed while the heart is stopped and blood is detoured through a heart-lung machine