 The aim of this study is to determine if PN prescribed in in-patients is indicated, appropriately following existing guidelines in terms of timing of nutrition support, prescription and monitoring and, whether it is associated with complications. In addition, clinical outcomes such as length of stay and mortality will be assessed. Also, we will evaluate metabolic, nutritional, infectious and inflammatory parameters in patients receiving soybean oil-based lipid emulsion compared to those of patients receiving olive oil-based lipid emulsion. 