Reference values of interrupter respiratory resistance in healthy preschool white children.

Background: Interrupter respiratory resistance (Rint) is reported to be useful in evaluating lung function in poorly collaborating patients. However, no reference values are available from large samples of preschool children using the standard interrupter method. The aim of this study was to define reference Rint values in a population of healthy preschool children.

[Adolescent sexual behavior and sexually transmitted diseases (STD). A preliminary study].

Great changes have occurred in the adolescent behaviour in the last twenty years; this has caused a great increase in the number of the transmitted by sexual intercourse diseases. These, along with the adolescent habits changing, have so widely spread among young people, that one third of the recorded case are actually referred to this group of age. So, a matter of great social interest, which would require a common effort by the adolescents' families, the teachers and by the adolescents themselves, to be faced in the most proper way, has arisen.