[Incidence and risk factors of mechanical complications in parenteral nutrition]. 
The objective of the present study is to determine the incidence of mechanical complications in patients with parenteral nutrition in our hospital, and to study which factors associated with catheterization in these patients are related to the appearance of different types of mechanical complications.  All the central venous catheters registered during the time period between 1988-1994 were included.  For the statistical treatment 5 logistic multiple regression models were designed in function of the different types of mechanical complications studied (dependent variable) and in relation to the defined risk factors (independent variables).  The difference was considered to be statistically significant when, for each variable, this is not 1 for the confidence interval.  The understanding of the different risk factors associated with the appearance of mechanical complications allows a better level of clinical action in the prevention of these types of complications.