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Background. Continuous renal replacement therapy (CRRT) increasingly is being used to treat critically ill patients with renal disease. CRRT removes waste products but also nutrients. Our understanding of trace element CRRT clearance has been limited by poor assay sensitivity. The development of inductively coupled plasma mass spectrometry (ICP–MS) allows for the measurement of CRRT trace element removal. Methods. Continuous venovenous haemodialysis (CVVHD) transmembrane clearances of trace elements and urea were assessed using a bovine blood-based in vitro model using two different haemodialyser types. These findings were validated in 10 critically ill adult patients receiving continuous venovenous haemodiafiltration (CVVHDF). Calculated daily trace element loss was compared with a typical dose of daily trace element supplementation. Results. The mean ± SD in vitro CVVHD transmembrane clearances (ml/min) for the polysulfone haemodialyser were chromium 0.97 ± 0.23, copper 0.47 ± 0.18, manganese 4.6 ± 3.6, selenium 1.2 ± 0.63 and zinc 2.3 ± 0.32 and for the cellulose diacetate haemodialyser chromium 1.54 ± 0.91, copper 0.21 ± 0.07, manganese 7.8 ± 4.1, selenium 0.76 ± 0.39 and zinc 2.7 ± 0.37. The in vivo CVVHDF transmembrane clearances (ml/min) were chromium 5.4 ± 2.4, copper 0.45 ± 0.33, manganese 1.9 ± 4.6, selenium 1.6 ± 1.2, and zinc 4.0 ± 1.3. Conclusion. ICP–MS assays detected the five trace elements in the effluent of CVVHDF patients. Trace element CVVHD transmembrane clearance estimates for our in vitro model were supported by the in vivo CVVHDF findings. Calculated daily trace element loss attributed to CVVHD and CVVHDF with dialysate flow rates of 33.3 ml/min is less than what is provided in a daily dose of a trace element supplementation product.

Hospitalized patients with hepatic insufficiency often suffer from severe catabolic states and are in urgent need of nutrition support during their acute illness. Protein intolerance, however, remains a significant problem with respect to the provision of adequate nutrition, either enterally or parenterally. The following report is an anecdotal series of 63 consecutive patients in a large urban hospital treated prospectively with nutrition support using a prototype high branched-chain amino acid solution (FO80) given by technique of total parenteral nutrition (TPN) by the subclavian or internal jugular route with hypertonic dextrose. Sixty-three patients, of which 42 had chronic liver disease (cirrhosis) with acute decompensation and 17 with acute hepatic injury and four with hepatorenal syndrome, are the subject of this report. All required IV nutrition support and were either intolerant to commercially available parenteral nutrition solutions or were in hepatic encephalopathy at the time they were initially seen. The cirrhotic patients had been hospitalized for a mean of 14.5 ± 1.9 days before therapy, had a mean bilirubin of 13 mg/100 mL, and had been in coma for 4.8 ± 0.7 days despite standard therapy. Patients with acute hepatitis had been in the hospital for 16.2 ± 4.1 day before therapy, had a mean bilirubin of 25 mg/100 mL, and had been in coma 5.2 ± 1.6 days before therapy. Routine tests of liver function, blood chemistries, amino acids, EEGs, and complex neurologic testing including Reitan trailmaking tests were used in the evaluation of these patients. Up to 120 g of synthetic amino acid solution with hypertonic dextrose was tolerated in these patients with improvement noted in encephalopathy of at least one grade in 87% of the patients with cirrhosis and 75% of the patients with hepatitis. Nitrogen balance was achieved when 75 to 80 g of synthetic amino acids were administered. Survival was 45% in the cirrhotic group and 47% in the acute hepatitis group.

Needleless connectors have been introduced into clinical practice to prevent accidental needlestick injuries and associated bloodborne infections. Needleless connectors include the split-septum devices and the mechanical valves that are classified as neutral-, negative-, and positive-displacement types on the basis of their internal membrane or valve function. Some studies have reported that mechanical valves, especially positive-displacement valves, may decrease thrombotic catheter occlusions based on their valve function that prevents blood reflux into the intravascular catheter. This article describes the types of needleless connectors and reviews the evidence related to their effects on thrombotic catheter occlusions.

Background Health sciences programs are increasingly expanding their curricula to bridge foundational scientific knowledge with needed skills to practice and patient care. The primary objectives of this study are to 1) assess whether the personal and professional development (PPD) subdomains (self-assessment, leadership, innovation and entrepreneurship, and professionalism) are integrated in a pharmacy curriculum; and 2) identify any gaps related to the subdomains’ learning objectives. Methods Four different mapping activities were completed to create a comprehensive mapping plan regarding the integration of the PPD subdomains in the curriculum. The first mapping activity entailed matching the school’s program educational outcomes (PEOs) to these subdomains (Step 1). Mapping of the enacted curriculum by faculty (Step 2) and learned curriculum by students (Step 3) were also completed in order to evaluate the integration of these subdomains in the curriculum. Finally, Step 4 involved mapping of the assessed curriculum by analyzing the progress of students on PPD-related competencies using standardized scoring rubrics and the correlation between students’ and facultys' assessments with regard to matching competencies. The Cochrane’s Q test and the Cohen’s kappa coefficient were used in the statistical analysis of parametric data. Results The subdomains were found to be woven across curricular, co-curricular, and extra-curricular activities based on the four different mapping activities. Faculty and students agreed that the PPD competencies are integrated in the curriculum; provided example courses, experiences and activities; and identified areas of further improvements. The completed mapping activities drove the development of action plans for remediation of identified gaps in the curriculum. Conclusion Mapping activities showed the sequential integration of the PPD skills at different depths and breadths in the curriculum. This study provides an example to health sci

Acute renal failure (ARF) is rarely an isolated process but is often a complication of underlying conditions such as sepsis, trauma, and multiple-organ failure in critically ill patients. As such, concomitant clinical conditions significantly affect patient outcome. Poor nutritional status is a major factor in increasing patients' morbidity and mortality. Malnutrition in ARF patients is caused by hypercatabolism and hypermetabolism that parallel the severity of illness. When dialytic intervention is indicated, continuous renal replacement therapy (CRRT) is a commonly used alternative to intermittent hemodialysis because it is well tolerated by hemodynamically unstable patients. This paper reviews the metabolic and nutritional alterations associated with ARF and provides recommendations regarding the nutritional, fluid, electrolyte, micronutrient, and acid-base management of these patients. The basic principles of CRRT are addressed, along with their nutritional implications in critically ill patients. A patient case is presented to illustrate the clinical application of topics covered within the paper.

Parenteral nutrition is a life-saving therapy for patients with intestinal failure. It may be associated with transient elevations of liver enzyme concentrations, which return to normal after parenteral nutrition is discontinued. Prolonged parenteral nutrition is associated with complications affecting the hepatobiliary system, such as cholelithiasis, cholestasis, and steatosis. The most common of these is parenteral nutrition-associated cholestasis (PNAC), which may occur in children and may progress to liver failure. The pathophysiology of PNAC is poorly understood, and the etiology is multifactorial. Risk factors include prematurity, long duration of parenteral nutrition, sepsis, lack of bowel motility, and short bowel syndrome. Possible etiologies include excessive caloric administration, parenteral nutrition components, and nutritional deficiencies. Several measures can be undertaken to prevent PNAC, such as avoiding overfeeding, providing a balanced source of energy, weaning parenteral nutrition, starting enteral feeding, and avoiding sepsis.

Refeeding syndrome describes a constellation of metabolic disturbances that occur as a result of reinstitution of nutrition to patients who are starved or severely malnourished. Patients can develop fluid and electrolyte disorders, especially hypophosphatemia, along with neurologic, pulmonary, cardiac, neuromuscular, and hematologic complications. We reviewed literature on refeeding syndrome and the associated electrolyte abnormalities, fluid disturbances, and associated complications. In addition to assessing scientific literature, we also considered clinical experience and judgment in developing recommendations for prevention and treatment of refeeding syndrome. The most important steps are to identify patients at risk for developing refeeding syndrome, institute nutrition support cautiously, and correct and supplement electrolyte and vitamin deficiencies to avoid refeeding syndrome. We provide suggestions for the prevention of refeeding syndrome and suggestions for treatment of electrolyte disturbances and complications in patients who develop refeeding syndrome, according to evidence in the literature, the pathophysiology of refeeding syndrome, and clinical experience and judgment.

Background: Increased risk for infection has been associated with the administration of intravenous fat emulsion (IVFE). Typically, IVFE is infused daily as part of the parenteral nutrition (PN) regimen. However, a national IVFE shortage in 2010 compelled institutions to restrict administration to nondaily. This retrospective study evaluated the rate of infections associated with the nondaily as compared to daily IVFE infusion in hospitalized adult patients. Methods: Patients in the study group received nondaily IVFE during the shortage period, and patients in the control group received daily IVFE. The primary outcomes were the development of catheter-related bloodstream infections (CR-BSIs) or any bloodstream infection (BSI). Secondary outcomes were the development of respiratory, urinary, wound, or other infections. Results: Included in the study were 52 patients, 33 patients in the study group and 19 patients in the control group. There were no CR-BSIs reported. BSIs occurred in 1 patient in the study group. The total number of infections and urinary tract infections (UTIs) per 1000 catheter days were not different between the 2 groups (45.28 vs 21.24, P = .203) and (24.39 vs 5.525, P = .099), respectively. Survival analyses showed no difference between the 2 groups for the time to first infection (11.24 vs 6.59 days, P = .30) and time to first UTI (11.97 vs 7 days, P = .093), respectively. Conclusions: Nondaily vs daily IVFE infusion did not have a significant effect on the risk of infection or time to development of infection; however, results are limited due to the small sample size. Large prospective randomized clinical trials are needed to further evaluate the effect of daily as compared to nondaily IVFE infusion on infectious complications.

Background: Trace elements (TEs) dosing and monitoring in home parenteral nutrition (PN) patients vary with their underlying conditions. Methods: This retrospective observational study evaluated parenteral TE dosing, serum TE concentrations and monitoring, and dose-concentration relationships between TE doses and serum TE concentrations in 26 adult and adolescent home PN patients. Results: There was a total of 40,493 PN days. Average parenteral zinc doses of 9.1 mg/d and 7.6 mg/d resulted in the majority of serum zinc concentrations (90%) within normal range in patients with and without short bowel syndrome (SBS), respectively. Selenium at about 70 mcg/d resulted in about 60% of serum selenium concentrations within normal range, with 38% of values below normal in patients with and without SBS alike. Copper at 1 mg/d resulted in 22.5% of serum copper concentrations above the normal range. The majority of serum manganese (94.6%) and chromium (96%) concentrations were elevated. Serum TE concentrations were infrequently monitored. Significant relationships existed between doses and serum concentrations for zinc (P < .0001), manganese (P = .012), and chromium (P < .0001) but not for selenium or copper. Conclusions: TE doses in home PN should be individualized and adjusted based on regular monitoring of TE status. In long-term home PN patients, higher zinc and selenium doses may be necessary to maintain their normal serum concentrations. Lower copper doses and restrictions of manganese and chromium supplementation may be needed to avoid their accumulation. Relationships between TE doses and serum TE concentrations vary for each TE and underlying clinical conditions.

Continuous renal replacement therapy (CRRT) is used to treat critically ill children with acute kidney injury. The effect of CRRT on trace element clearance is poorly characterized. The purpose of this study was to quantify the transmembrane clearance of chromium, copper, manganese, selenium and zinc during continuous venovenous hemodiafiltration (CVVHDF). The transmembrane clearance of trace elements was assessed prospectively in five critically ill children receiving CVVHDF at the pediatric intensive care unit of a tertiary care university hospital. Pre-filter blood and effluent samples were measured for trace element concentrations. Transmembrane clearance of trace elements was calculated, and daily loss of each trace element was determined. Daily trace element loss via CVVHDF was compared with daily standard supplementation of trace elements in pediatric parenteral nutrition. Five patients (age range 23 months to 15 years) with a body weight range of 10.5–53 kg completed the study. The median transmembrane clearance of chromium, copper, manganese, selenium and zinc during CVVHDF was calculated as 0 ml, 0.59 ml, 2.48 ml, 1.22 ml, and 1.90 ml, respectively, per 1.73 m2 body surface area per minute. The calculated CVVHDF losses were substantially smaller than the daily parenteral supplementation for all trace elements.