Guidelines are systematically developed statements of the actual knowledge
in order to assist doctors and patients by the decision of appropriate heal
th care. Since 1998 the DGOT has published 22 well structured guidelines, 2
0 guidelines are under construction. The AWMF as the coordinator of guideli
ne constructing of all scientific medical societies has published 629 guide
lines since 1995. The publication of guidelines of the DGOT and the BVO is
the first step for dissemination, nexts steps should be implementation und
evaluation. Then it will be evident whether change in medical practice will
occur.