[Myocardial protection: some problems and recent progress].

One of the great advances in cardiac surgery in the past 20 years has been the concept of myocardial protection "cardioplegia". But even now, there are some controversies about the methods for myocardial protection. In this review, controversy between crystalloid and blood cardioplegia, between extracellular and intracellular cardioplegic solution are discussed. And then the recent advances in cardioplegia, terminal warm blood cardioplegia, retrograde infusion of cardioplegic solution and cardioplegia in infants are reviewed.