The results of the Spanish Registry of Hemodynamic and Interventional Cardiology are presented. Eighty hospitals have collaborated, which represent 100% of the cardiac catheterization laboratories. Seventy-two of which performed cardiac catheterization in adults and eight laboratories which exclusively performed pediatric cardiac catheterizations. We have studied 57,773 diagnostic procedures which were performed, which represents an increase of 11% from 1994. In addition, 12,359 angioplasties were performed, representing an increase of 18%. This represents 312 PTCAs per million people. PTCA success (91%) and global complications (3.2%) were similar to those of 1994. There was an increase in stent implantation: 3,418 procedures with 4,321 stents. This represents 1.26 stent per procedure. Sixty-four per cent of them were done electively and with a marked reduction in complications rate: subacute thrombosis, 1.6%, MI, 1.8% and a mortality of 1.1%. The number of mitral valvuloplasties decreases 16% and the pediatric interventional procedures (464) were similar to those of last year.