[Incidence of catheter-related infection and associated risk factors in hospitalized patients with parenteral nutrition]. / Incidencia de infección asociada a catéter y factores de riesgo relacionados en pacientes hospitalizados con nutrición parenteral.

INTRODUCTION: The most severe complication of parenteral nutrition (PTN) is catheter-related infection (CRI). OBJECTIVES: To study the incidence rate and factors associated to CRI. MATERIAL AND METHODS: 271 patients followed at the Nutrition Unit for 6 months. The composition of the PTN was calculated according to the metabolic demands. 20.3% received a lipid solution enriched with omega-3 fatty acids (SMOF Fresenius Kabi®) and 79.7% with olive oil (Clinoleic Baxter®). RESULTS: The rate of CRI was 25 per 1,000 days of PTN (55 patients: 61.7±17.8 years, 60.3% males, 29.3±10.6 days of hospital stay and 10.4% mortality). Coagulase-negative Staphylococcus was the most frequently isolated microorganism. There were no differences by age, gender, mortality, or composition of the PTN between patients with or without infection. The patients treated with omega-3 received more calories with the PTN, at the expense of higher intake of glucose and lipids. However, the rate of infection was similar, although there was a not significant trend towards a lower infection rate when using the omega-3 composition (14.5% vs. 23.1%, respectively, p = 0.112). The duration of the nutritional support was higher in patients with CRI (13.0 ± 9.7 vs. 9.3 ± 8.1, p = 0.038). Total mortality (16.9%) was independent of the presence or absence of CRI (10.4% vs. 18.7%, p = 0.090) or of the use of omega-3 lipids or olive oil in the PTN (10.9% vs. 18.5%, p = 0.125). CONCLUSION: Patients submitted to PTN have a high rate of CRI. The presence of infection is related to the duration of the PTN, being independent of the age, gender, and composition of the solution. The use of omega-3 lipid solutions may be beneficial although further studies are needed to confirm this.

[Micronutrient supplementation in parenteral nutrition in Spanish hospitals]. / Utilización de micronutrientes en nutrición parenteral en los hospitales Españoles.

Several years ago, it was recommended not to add vitamins or oligoelements to parenteral nutrition (PN) solutions and to administer them immediately after the addition of the micronutrients to avoid their decay. Nowadays, it has been observed that with multilayer bags, ternary mixtures and sunlight protection vitamins degradation is minimal. Daily intake of micronutrients is necessary in the critically ill, malnourished or long-term PN patients. Aiming at knowing the schedules of use of micronutrients in PN in Spanish hospitals and the way PN bags are prepared regarding the factors conditioning their stability, we undertook a telephone survey to the pharmacists in charge of PN at the different hospitals. We compared the data obtained with those from other surveys performed in 2001 and 2003. Pharmacists from 97 hospitals answered the questionnaire (answer rate 88%). The hospital sizes ranged 104-1728 beds. As compared to the data form preceding years, we observed a better adequacy to the current recommendations, although there are still 30% of the hospitals that administer micronutrients on an every other day basis independent of the clinical situation of the patients. In most of the hospitals, multilayer bags are used and/or sunlight protection and ternary mixtures. According to these results showing the different criteria for administering vitamins and oligoelements in PN solutions, it seems necessary to elaborate consensus documents that adapt to the reality of the diverse practices besides promoting the performance of well-designed clinical studies establishing the requirements under special clinical situations.