Étude de facteurs influençant l'apparition de bulles d'air dans la ligne d'administration de nutrition parentérale aux domiciles des patients. Influences respectives du couple pompe–tubulure et de la teneur en lipides dans le mélange nutritif

Abstract

Patients followed at home parenteral nutrition (HPN) in our adult and paediatric centers, complain regularly with noise pollution generated by the “bubble air” alarms, and patients do not seem to be exposed in the same way. The aim of this study was to determine the precise impact of two factors empirically suspected to play a role into the bubble air genesis: pumping technology used (with a compartment or linear with fingers) and the presence of injectable lipid emulsion (ILE). Six pumps from three different models (two linear with fingers mechanism and one with compartment) were used and infusions of mixtures with different lipid proportions were realized. For each infusion, volume of emitted gas was measured and number of “bubble air” alarms counted. A significant difference between three pump models is highlighted without a strong proof that only pumping technology is alone in charge. ILE decrease the volume of gas emitted proportionally to its concentration. Emitted gas are dissolved gas. This identification of two factors supporting “bubble air” alarms should allow several adaptations into practices which contribute to improve patient's quality of life.