Introduction
ARRESTED
Cardioplegia is an essential component of cardiac surgery that allows surgery on the arrested heart with preservation of the myocardium [Custodiol (histidine–tryptophan–ketoglutarate (HTK) solution) Dr. Franz Köhler Chemie GmbH) was first introduced in 1970 for myocardial protection and organ preservation. Custodiol is an intracellular, crystalloid cardioplegia solution that is given in a single dose that lasts for 3 h [