[Control of the biological contamination index in total parenteral nutrition (TPN) preparations]. / Control del índice de contaminación biológica en mezclas de nutrición parenteral total (NPT).

Possible microbiological contamination of 1,107 mixtures of TPN made up in the Pharmacy Department of the General Hospital of Albacete in 1991 are studied. In this department, the TPN mixtures are prepared in a horizontal laminar flow-chamber, under the aseptic conditions included in the literature. When we come to evaluate the contamination index of these preparations, we have to take the increase in the work load on days before public holidays into account. We observe that, when the preparation norms are rigorously followed, no significant contamination is produced, even on days when the number of mixtures to be made up is higher.