Higher arterial catheter-related infection rates in femoral than in dorsalis pedis access.

Although there are many studies on arterial catheter-related infection (ACRI) there is little information on the relative risks associated with different catheter access sites. In previous studies we have shown a higher incidence of ACRI in femoral than in radial access sites. This prospective observational study was designed to compare the incidence of ACRI in patients on an intensive care unit with femoral versus dorsalis pedis access sites. We compared 1085 femoral arterial catheters inserted for a cumulative 6497 days with 174 dorsalis pedis catheters inserted for a cumulative 1050 days. We detected 33 cases of ACRI in the femoral access group (11 with bacteraemia and 22 with line site infection; 5.08 infections per 1000 catheter-days) but none in the dorsalis pedis access group. There were no significant differences between the two groups regarding age, sex, Acute Physiological Assessment and Chronic Health Evaluation (APACHE) II, diagnosis, previous arterial catheter insertion, use of mechanical ventilation, use of antimicrobials or catheter duration. Regression analysis showed a higher incidence of ACRI for femoral than for dorsalis pedis access sites (odds ratio: 7.6; 95% confidence interval: 1.37-infinite; P=0.01). These results suggest that dorsalis pedis arterial access should be used in preference to femoral arterial access in order to reduce the risk of ACRI.

[Enteral nutrition in ICU patients on a high-protein diet]. / Nutrición enteral en pacientes de UCI con dieta hiperproteica.

BASIS: The need for nutritional support is at present beyond question, while the use of early enteral nutrition in critical patients admitted to Intensive Care Units is increasingly common and would appear to offer a set of advantages as nutritional support. PATIENTS: Of a total of 26 consecutive enteral nutrition patients, 22 were studied prospectively (84.6%), and, through a nasal-gastric probe, were administered early high protein enteral polymeric diet with 25% of total calorific value from proteins, for an average of 10 days. The other four (15.4%) did not enter the study, according to the exclusion criteria established, and so were not taken into account in the statistics. METHOD: A design was followed in which the diet was administered progressively until reaching 30 ml/kg/day, in a maximum of three days, during which aspects were analyzed dealing with tolerance and ease of use, on the one hand, and other metabolic and nutritional aspects on the other. Analytical controls were carried out on days 0, 4, 8 and 12. Tolerance and adverse effects were monitored continuously. RESULTS: During the study, one of the twenty-two patients died (4.54%): the other 21 remained alive. In analysis of the metabolic and nutritional parameters, improvement was obtained in all those expected to reach normal levels, with p < 0.001 (glucose, prealbumin, TF, RBP, Zn, Mg and P). Of particular note was the evolution of the nitrogen balance (p < 0.001 and r = 0.77). As to tolerance, diarrhea appeared in two patients (9.09%), ileus in one (4.5%): no cases were detected of abdominal distension, nausea or vomiting. In no case was diet suspended for causes attributable to the enteral nutrition, nor was any therapeutic manipulation required. CONCLUSIONS: Excellent tolerance of enteral nutrition was obtained, with almost no complications associated with its use, despite the gravity of the patients (APACHE 14). On the other hand, an improvement was obtained in metabolic and nutritional parameters, with the particular significance of the nitrogen balance.