It shows the working process of the health professionals that act in one basic unit of health in relations of the use of technologies and the relationship that establish in the care´s production. Objectives: identify the relations established between care´s assistance in the micropolitical space of one basic unit; to analyse the "noises" identified in the work´s process of the professionals. Method: methodology not conventional adapted to a qualitative study. It was adopted a study of the cases whose trajectory was called trajectory-sentinel and, through that, it was detected "noises" that influenced in the effectivity of the care. Conclusion: it was identified specifics "noises", intrainstitutionals and interpersonals. The analyse of this revealed the fragility of the contractuality´s net established in the interior of this unit that is connected directly with the work´s process and with the assistence´s quality given.
Public Health; Nursing; Health Personnel
