摘要
the use of one of the fields of strategic surveillance, called trend analysis, is dealth with. a methodology of use, applicable to the information organizations that contribute to the centers of investigation and development (i + d), in health, biomedical sciences and environment is formalized, using a study case that is useful for the information professionals to respond to the disquiets and needs of the analysis of internet tendencies. the client%26apos;s approach is adopted since the beginning of the service, and the execution algorithm is exposed. each of the phases and tasks, as well as their intrinsic characteristics are presented and explained. each enunciated step is illustrated with examples. the information analysis cycle is analysed as a premise for the carrying out of the algorithm.