The Authors examine the peculiar psychological problems of pacemaker carriers. According to the degree of adjustment to the new clinical condition, it is possible to distinguish patients who react developing an anxious-depressive status (10-20%), those who realistically adjust to the new functional condition allowed by the pacemaker (70-80%) and those who, denying their disease, tend to overdo in their physical performance (10-20%). These characteristic psychological behaviors are examined with their family social, and physical implications. On the basis of these observations the importance of psychological support of nurses and physicians is emphasized.