[Particles in infusion fluids. Preventive effectiveness of terminal filters. Comparative study].

The main particles present in solutions for parenteral use are potentially harmful. Current industrial technologies are not yet capable of supplying products that are entirely free of corpusculated substances. In addition, the latter increase in direct proportion to the number of handlings that are carried out by hospital staff in the preparation of infusion treatments. Filters capable of cutting down the number of infused particles are suggested for application to defluxion devices. Three such filters currently available on the Italian market are examined. The filter with 0.45 mu diameter holes proved capable of minimising the amount for particles without provoking an appreciable interference with the defluxion times of the solutions used in the experiments.