Cardioplegia is a research area related to the temporary cessation of the heart's activity during cardiac surgery. It involves the administration of a specialized solution, also called cardioplegic solution, to immobilize the heart muscle and protect it from damage during surgical procedures such as coronary artery bypass grafting. Cardioplegia aims to improve the surgical outcome by providing a bloodless and motionless field for the surgeon to work on, as well as minimizing the risk of ischemic damage to the heart muscle. Researchers in this area investigate different methods and formulations of cardioplegic solutions to optimize their effectiveness and safety in clinical practice.