Chronic intestinal failure (CIF) is a chronic disease and its main treatment is home parenteral nutrition. This disease is defined by a small bowel dysfunction preventing absorption of nutrients and water inputs. A  normal  oral diet is then insufficient, and must be supplied by an  artificial  parenteral nutrition. This treatment is administered at home, by a central veinous catheter, with varying volumes and frequencies.~The quality of life of patients treated by home parenteral nutrition is significatively altered .~The constraints linked to this treatment may make it difficult to follow. The patients can be lead to ask their doctor for a relief or a modification of this treatment during office visits, to improve their quality of life.~Poor treatment adherence concerns 25% of patients with chronic disease . It has never been assessed in France in CIF.~The goal of this study is to evaluate the treatment adherence for home parenteral nutrition in two of its components: negotiation during office visits, and compliance at home.~The negociation component will be assessed during an office visit with the help of forms, by the difference between  ideal  parenteral nutrition prescription proposed by prescriber and the  final  prescription, that the patient ultimately receives at the end of the office visit.~The compliance component will be assessed by a telephone interview, 8 weeks after the office visit.
This observational, cross-sectionnal, multicentric study evaluates treatment adherence of home parenteral nutrition in patients with chronic intestinal failure.