The author suggests a classification of the indications for cardiac eletrostimulations based on the analysis of his own clinical observations upon a series of 308 patients, treated by different cardiac electrostimulation methods and upon literature date. The results of his observations are illustrated in four tables, after a brief review of the methods most frequently applied, taking in consideration their positive and negative aspects from a point of view of his observations in comparison to those found in the literature. At the end, practical conclusions are drawn for the proper application of that treatment in everyday clinical practice with a view to raising the problem of founding a department or centre for cardiac electrostimulation, due to the constant number increase of those patients and because this problem is not solved in our country so far.