Incidence of postoperative urinary retention (POUR) after joint arthroplasty and management using ultrasound-guided bladder catheterization.

BACKGROUND: Postoperative urinary retention (POUR) following lower limb arthroplasty is a common complication. The aim of this observational study was to establish the incidence of POUR and assess the usefulness of an ultrasonographic nurse-driven protocol, thereby avoiding elective bladder catheterization. METHODS: Two-hundred and eighty six consecutive patients undergoing elective hip and knee arthroplasty were retrospectively studied. None of the patients received elective bladder catheterization. Data on risk factors for POUR, urinary tract infections, length of hospital stay and analgesia were collected. Student's t, Wilcoxon rank-sum, ANOVA and Kruskall-Wallis tests were performed for comparison among two or more groups. Categorical variables were studied using Pearson's χ2 test. Results were considered significant when the P value <0.05. RESULTS: Of the 286 patients studied, 49 (17%) required indwelling catheter for 24-48 h. Patients who had POUR had more risk factors (P<0.05) and had longer hospital stays (P<0.05). When comparing analgesia, continuous peripheral nerve block (CPNB) had the least impact on POUR (15.8%), while epidural analgesia had the greatest impact (48.1%). CONCLUSION: Bladder scanners timely detect POUR following lower joint arthroplasty, making elective bladder catheterization unnecessary.

Metabolic treatment of critically ill patients: energy expenditure and energy supply.

Nutrition in critically ill patients should be considered as therapy: assessing the energy expenditure and the termogenic effect of food, and knowing the differences among composition and amount of given substrates, it is possible restore, maintain, or at least limit the derangement of energy equilibrium. Energy metabolism comprehends assumption, storage and oxidation of nutrients: all these factors could be discriminant in critical clinical conditions, particularly cardiac and respiratory failure. Then, this review would lead the decision making process beginning from biochemistry and bioenergetics, until the metabolic strategy practically usable at the bedside of patients during the whole critical phase of their pathology.

Evaluating daily nursing use and needs in the intensive care unit: a method to assess the rate and appropriateness of ICU resource use.

BACKGROUND: We designed a tool to measure the rate and appropriateness of intensive care unit (ICU) nursing coverage as a proxy for the use of resources. METHODS: We tested the tool in 32 Italian ICUs during a cross-sectional study (4 days/week, October 2001 and April 2002). The level of care was classified as high or low. The appropriate patient-to-nurse ratio for both levels (2/1 and 3/1 in this ICU mix) was defined. The provided and theoretical nurse assistance was computed, the difference between the two quantifying the ICU use of personnel: a positive difference means over-utilization, a negative one under-utilization. We calculated the maximum number of high-level and low-level care days available for ICU and the relative utilization rates. These two rates quantify the appropriateness of resource use in relation to the planned use. RESULTS: Analysing 5783 treatment-days, the tool identified units using almost all available resources (five), overcrowded (14: too small units) or empty (16: too big). Units were overcrowded on account of the high-level of care required (five: utilization rate >100%) or reallocated too much of their residual high-care nursing capacity to low-level care (six). In empty units both utilization rates were lower than expected. CONCLUSIONS: The method quantifies the rate and appropriateness of resource usage and suggests the best management in units with fixed human resources or a fixed number of beds.

Performance determinants and flexible ICU organisation.

We faced some of the most important aspects of the problem of the appropriateness of ICU resources use, that are the relationship between volume of activity and mortality, the analysis of cost-effectiveness in intensive care medicine, and the monitoring of the human resource use in ICU. For this aim three different surveys were utilized: one at European level, the second at country level and, third, a regional survey. After developing a new measure of volume called ''high-risk volume'', we explored the relationship between outcome and volume, founding that such association was very strong (from 3 to 1719% decrease in ICU/hospital mortality every five extra high-risk patients treated per bed per year), and that an occupancy rate larger than 80% was associated with higher mortality. Therefore, patients in all levels of risk are better treated in high-risk volume ICUs with a reasonable occupancy rate. Analysing cost-effectiveness in intensive care medicine using a national case-mix categorized in different diagnostic groups, we identified brain haemorrhage, ALI/ARDS and surgical unscheduled patients as users a high volume of monetary resources less efficiently, while the scheduled abdominal surgery patients admitted to receive intensive care and patients on the ICU for minor organ support made the best use of the fewer resources spent. Finally, we designed a new approach to measure the rate and appropriateness of nursing resource use in ICU on a daily basis. Testing this approach on a group of general non-specialist ICUs, we found that the method was powerful enough to adequately distinguish between ''over'' and ''under-utilization'' and to identify all the theoretical scenarios of nurse/resource utilization.