RESUMO
Perinatal mortality is an epidemiologic indicator that evaluates materno-infantil quality care indirectly. Obtaining rates of perinatal mortality from continuous and confident information systems allow us a more precise evaluation of quality care in developed countries. In developing countries as Mexico, there aren't yet evaluating health programs that let us to know the actual situation of our medical care. Being the main mistake subregister problems in regional and national perinatal mortality case. All this let us to a not optimum use of the limited resources given for health. The aim of this paper is to propose an analysis way into this matter for knowing our institutional and national situation. This would permit us to suggest effective strategies in the prevention of obstetric complications as in the preterm birth case. The main objective is to prevent death in the perinatal period.