[Medical treatment of the threat syndrome with heparin. Long-term prospective study]. / Traitement médical du syndrome de menace par l'héparine. Etude prospective au long cours.

A 19-year study of 119 patients stricken with a threat syndrome and treated with heparin is presented. The average observation period is 10.15 years. The total mortality was 33.94 per cent. The cumulative annual mortality was 1.79 per cent. The life expectancy for treated patients was identical to that of the general population in Argentina. The survivors (60.51% of the cases) were either asymptomatic (45.83%) or presented varying cardiac pathology (54.17%).