[Open or closed drainage systems: their impact on urinary infections].

Starting on the premise that the risks of infection due to vesical catheterism lasting more than 48 hours fundamentally depends on the type of drainage system employed, the authors make a study to see if it is possible to achieve a decrease in the rate of urinary tract infections by utilizing closed systems. This study follows a quasi-experimental design having two groups of patients who require this form of catheterism and analyzes its results. This study lasted five months and concluded that "the utilization of a closed drainage system having an anti-backup flow valve significantly reduces the rate of urinary tract infections".