[What congenital heart diseases may cause problems in adulthood?].

The number of patients with congenital heart disease exceeds now the number of children born with these defects. This is related to the "success story" of cardiac surgery and interventional catheterism. The prevalence of this new population is about 3-4 patients/1000 adults in the general population. Some of these patients have native disease, with a relatively good tolerance up until adulthood. Nevertheless, these patients are rarely completely cured, and they face problems such as threatening atrial or ventricular arrhythmias, heart failure (more often right heart failure) endocarditis or pulmonary hypertension. Patients with complex diseases are more at risk of complications. Situations "at risk" are described in this review, one of them being the loss of follow up particularly during the transition between paediatric care and adulthood.