Parenteral Nutrition Solutions Research Articles

Assessment of the Adherence to ESPGHAN 2018 Guidelines in the Neonatal Intensive Care Unit of the Ghent University Hospital: A Retrospective Study.

Parenteral nutrition (PN) is a standard of care for preterm infants in the first postnatal days. The European Society of Paediatric Gastroenterology, Hepatology, and Nutrition (ESPGHAN) has updated their guideline recommendations on PN in 2018. However, data on actual 2018 guideline adherence in clinical practice are sparse. In this retrospective study, conducted at the neonatal intensive care unit (NICU) of Ghent University Hospital, we analyzed the ESPGHAN 2018 PN guideline adherence and growth for 86 neonates admitted to the NICU. Analyses were stratified by birth weight (<1000 g, 1000 to <1500 g, ≥1500 g). We documented the provisions for enteral nutrition (EN) and PN, and we tested the combined EN and PN provisions for ESPGHAN 2018 adherence. The nutrition protocols showed a high adherence to PN guidelines in terms of carbohydrate provisions, yet lipid provisions for EN and PN often exceeded the recommended maximum of 4 g/kg/d; although, PN lipid intakes maxed out at 3.6 g/kg/d. Protein provisions tended to fall below the recommended minimum of 2.5 g/kg/d for preterm infants and 1.5 g/kg/d for term neonates. The energy provisions also tended to fall below the minimum recommendations, especially for neonates with a birth weight (BW) < 1000 g. Over a mean PN duration of 17.1 ± 11.4 d, the median weekly Fenton Z-scores changes for length, weight, and head circumference were positive for all BW groups. Future studies have to assess how protocols adapt to current guidelines, and how this affects short- and long-term growth across different BW groups. In conclusion, the reported findings provide real-world evidence regarding the effect of ESPGHAN 2018 PN guideline adherence, and they demonstrate how standardized neonatal PN solutions can safeguard stable growth during NICU stays.

Stability and compatibility of parenteral nutrition solutions; a review of influencing factors

Both stability and compatibility of parenteral nutrition solutions (PNS) with drug products are major concerns for clinicians and clinical pharmacists, especially when concurrent administration of PNS with intravenous medications (IVM) is unavoidable. Since the same physicochemical principles apply to both adult’s and paediatrics’ PNS, concerns about stability and compatibility may still apply to both. However, these concerns are relatively more common in paediatrics and neonatal clinical settings, where limited vascular access can be problematic and the coadministration of PNS and drugs is more common. In neonatal and paediatric populations, there have been few experimental studies and comprehensive evaluations looking at medication compatibility with frequently used PNS. This work is part of a larger research project concerned for compatibility of PNS with commonly used intravenous medication in paediatric and neonates. This paper captures and reviews published data on factors influencing stability and compatibility of parenteral nutrition solutions. This information will help clinicians and clinical pharmacists to understand the principals of the stability and compatibility of PNS, furthermore, it will inform better design of future compatibility studies, as it highlights the complexity of PNS and the multiple factors influencing the stability of PNS, and hence its compatibility with IVM. When preparing, prescribing, and administering the PNS, especially when co-administration with IVM is unavoidable, it is important to take into account the physicochemical properties of the PNS components and IVM as well as administration conditions and environmental factors. These factors should also be considered in the design of the compatibility studies of the PNS with the IVM.

Sodium glycerophosphate use in parenteral nutrition improves mineral metabolism in extremely low birth weight infants.

To evaluate the clinical effect of sodium glycerophosphate (NaGP) in parenteral nutrition solutions on mineral metabolism in extremely low birth weight (ELBW) infants. NaGP was introduced for use in place of potassium phosphate (K3PO4) in January 2018; this retrospective cohort study included 95 ELBW infants treated with K3PO4 between January 2015 and December 2017 and 77 infants treated with NaGP between August 2018 and January 2021. Mineral intake over the first 14days; changes in serum calcium, phosphorus, sodium, and alkaline phosphatase (ALP) levels over the first 1-3months; and the rates of electrolyte imbalance and clinical morbidity were compared. High-risk infants who had nil per os (NPO) status for >14days and prolonged parenteral nutrition exposure were further analyzed as a subgroup. The use of NaGP instead of K3PO4 significantly increased Ca and P intake, but intakes remained below the recommended range (Ca, 64-140mg/kg/day; P, 50-108mg/kg/day). Compared with levels in the K3PO4 group, the NaGP group had significantly higher serum Ca and P levels after day 14 and lower ALP levels after day 56. In the subgroup analysis, the NaGP group had significantly lower incidences of hypophosphatemia, hyponatremia, bronchopulmonary dysplasia, and ALP >500 IU/L. Although the administration of NaGP instead of K3PO4 in parenteral nutrition regimens still did not provide adequate Ca and P intake for ELBW infants, higher intake significantly improved serum Ca and P levels, especially in ELBW infants with prolonged parenteral nutrition exposure.

Retracted: Data Mining-Based Stability and Prescription Analysis of Neonatal Parenteral Nutrition Solution.

[This retracts the article DOI: 10.1155/2021/5744656.].

Peripheral Parenteral Nutrition Solutions and Bed Bath Towels as Risk Factors for Nosocomial Peripheral Venous Catheter-related Bloodstream Infection by Bacillus cereus

In Japan, China, and Singapore, several studies have reported increased incidences of peripheral venous catheter-related bloodstream infection by Bacillus cereus during the summer. Therefore, we hypothesized that bed bathing with a B. cereus-contaminated "clean" towels increases B. cereus contact with the catheter and increases the odds of contaminating the peripheral parenteral nutrition (PPN). We found that 1) professionally laundered "clean" towels used in hospitals have B. cereus (3.3×104 colony forming units (CFUs) / 25cm2), 2) B. cereus is transferable onto the forearms of volunteers by wiping with the towels (n=9), and 3) B. cereus remain detectable (80∼660 CFUs /50cm2) on the forearms of volunteers even with subsequent efforts of disinfection using alcohol wipes. We further confirmed that B. cereus grow robustly (102 CFUs /mL to more than 106 CFUs /mL) within 24hours at 30°C in PPN. Altogether we find that bed bathing with a towel contaminated with B. cereus leads to spore attachments to the skin, and that B. cereus can proliferate at an accelerated rate at 30°C compared to 20°C in PPN. We therefore highly recommend ensuring the use of sterile bed bath towels prior to PPN administration with catheter in patients requiring bed bathing.

A case report of Wernicke Korsakoff syndrome in a patient with cholangiocellular carcinoma: An underestimated cause of encephalopathy in cancer patients

Wernicke's encephalopathy, a disorder caused by thiamin deficiency, is characterized by a classical triad of encephalopathy, ataxia, and ophthalmoplegia. Although alcoholism is the most common predisposing factor, it can also be associated with nonalcoholic states (hyperemesis gravidarum, intestinal obstruction, bariatric surgery, and others). This work presents a case of nonalcoholic Wernicke-Korsakoff syndrome diagnosed in a cholangiocellular carcinoma patient and literature review. A 65-year-old male patient with a history of cholangiocellular carcinoma (Klatskin tumor) was treated with radiotherapy at the operation site after Roux-en-Y hepaticojejunostomy. During follow-up, the patient developed gastric outlet obstruction and was diagnosed with peritoneal carcinomatosis after a palliative gastrojejunostomy. As the patient could not tolerate oral nutrition during hospitalization, total parenteral nutrition was administered. After 10 days of admission, the patient showed decreased response to verbal stimuli as well as bilateral horizontal nystagmus, lethargy, and disorientation. Furthermore, the patient displayed confabulation. Clinical and imaging findings were consistent with Wernicke's encephalopathy. Therefore, treatment with intravenous thiamin replacement was initiated. The patient's encephalopathy regressed on the second day after treatment, and he recovered the place-person-time orientation. In the following month, the abnormal imaging findings were almost entirely resolved. In order to prevent irreversible brain damage induced by chronic thiamin deficiency, thiamin replacement therapy with parenteral nutrition solutions should be included as a treatment for hospitalized cancer patients unable to receive enteral nutrition for a long time.

Assessment of compatibility of rhIGF-1/rhIGFBP-3 with neonatal intravenous medications

BackgroundRecombinant human (rh)IGF-1/IGFBP-3 protein complex, administered as a continuous intravenous infusion in preterm infants, is being studied for the prevention of complications of prematurity.MethodsWe conducted in vitro studies to evaluate the physical and chemical compatibility of rhIGF-1/IGFBP-3 with medications routinely administered to preterm neonates. In vitro mixing of rhIGF-1/IGFBP-3 drug product with small-molecule test medications plus corresponding controls was performed. Physical compatibility was defined as no color change, precipitation, turbidity, gas evolution, no clinically relevant change in pH/osmolality or loss in medication content. Chemical compatibility of small molecules was assessed using liquid chromatography (e.g., reverse-phase HPLC and ion chromatography), with incompatibility defined as loss of concentration of ≥ 10%. A risk evaluation was conducted for each medication based on in vitro compatibility data and potential for chemical modification.ResultsIn vitro physical compatibility was established for 11/19 medications: caffeine citrate, fentanyl, fluconazole, gentamicin, insulin, intravenous fat emulsion, midazolam, morphine sulfate, custom-mixed parenteral nutrition solution (with/without electrolytes), parenteral nutrition solution + intravenous fat emulsion, and vancomycin (dosed from a 5 mg/mL solution), but not for 8/19 medications: amikacin, ampicillin, dopamine, dobutamine, furosemide, meropenem, norepinephrine, and penicillin G, largely owing to changes in pH after mixing. Small-molecule compatibility was unaffected post-mixing, with no loss of small-molecule content. For physically compatible medications, risk analyses confirmed low probability and severity of a risk event.ConclusionCo-administration of rhIGF-1/rhIGFBP-3 drug product with various medications was assessed by in vitro studies using case-by-case risk analyses to determine the suitability of the products for co-administration.

One-chamber and two-chamber parenteral nutrition admixtures for pediatric and adult patients: An evaluation of physico-chemical stability at room and cold temperature

ObjectivesThe aim of this study was to evaluate the physico-chemical stability of compounded total parenteral nutrition admixtures through peroxidation assay and ultraviolet-visible spectroscopy, high-performance liquid chromatography analysis, nuclear magnetic resonance spectrometry, pH meter, and dynamic light scattering. MethodsThe present study considered parenteral nutrition (PN) admixtures for pediatric and adult patients. The admixtures were characterized by a high content of vitamins and trace elements. They were prepared in one- or two-chamber bags in the hospital pharmacy using an automatic compounding system in a sterile room with laminar airflow at different temperature conditions and light exposure. The experiment setup comprised fat emulsions, lipid-free PN solutions, and single-chamber bags before and after adding vitamins and trace elements. The stability at room temperature (+25°C) and cold temperature (+2–8°C) was assessed by various means. ResultsTwo-compartment admixtures, single-chamber bags, and all-in-one PN supplemented with vitamins and trace elements are stable up until 35, 9, and 7 d, respectively, when protected from light and stored at +2 to 8°C. Also, the supplemented single-chamber PN was found to be stable up to 48 h when stored at +25°C with light exposure. ConclusionsThe results obtained will help improve PN management at the compounding center and in hospital wards, because they allow for the extension of the validity time frame provided so far by the different formulations and, therefore, therapy scheduling over several days.

Improved Macro- and Micronutrient Supply for Favorable Growth and Metabolomic Profile with Standardized Parenteral Nutrition Solutions for Very Preterm Infants.

Very preterm infants are at high risk for suboptimal nutrition in the first weeks of life leading to insufficient weight gain and complications arising from metabolic imbalances such as insufficient bone mineral accretion. We investigated the use of a novel set of standardized parenteral nutrition (PN; MUC PREPARE) solutions regarding improving nutritional intake, accelerating termination of parenteral feeding, and positively affecting growth in comparison to individually prescribed and compounded PN solutions. We studied the effect of MUC PREPARE on macro- and micronutrient intake, metabolism, and growth in 58 very preterm infants and compared results to a historic reference group of 58 very preterm infants matched for clinical characteristics. Infants receiving MUC PREPARE demonstrated improved macro- and micronutrient intake resulting in balanced electrolyte levels and stable metabolomic profiles. Subsequently, improved energy supply was associated with up to 1.5 weeks earlier termination of parenteral feeding, while simultaneously reaching up to 1.9 times higher weight gain at day 28 in extremely immature infants (<27 GA weeks) as well as overall improved growth at 2 years of age for all infants. The use of the new standardized PN solution MUC PREPARE improved nutritional supply and short- and long-term growth and reduced PN duration in very preterm infants and is considered a superior therapeutic strategy.

The main results of the analysis of the structure of consumption of infusion solutions in physical and cost terms in multidisciplinary medical organizations

Objective: to analyze the structure of consumption of infusion solutions in physical and cost terms in multidisciplinary medical organizations of the research base. Materials and methods: calculation of relative and average values, structural and functional analysis, system analysis, retrospective analysis, comparison method, correspondence. Results. As a result of the analysis of the structure of the consumption of infusion solutions by the main groups in multidisciplinary medical organizations of the research base, it was revealed that the largest share in the actual consumption of infusion solutions in kind are the groups of infusion solutions «Regulators of water-electrolyte and acid-base balances» and «Hemodynamic infusion solutions», which is explained by their significance for the provision of medical care in hospital conditions and the need for their appointment for a large number of patients of multidisciplinary medical organizations. As a result of the analysis of the structure of consumption of infusion solutions in value terms, we identified the main groups of infusion solutions that account for the greatest financial burden of multidisciplinary medical organizations of the research base, as well as the rating of the main groups of infusion solutions in the structure of consumption in value terms of multidisciplinary medical organizations. Conclusions. As a result of the analysis of the actual consumption of infusion solutions in kind, a significant predominance of the groups «Regulators of water-electrolyte and acid-base balances» and "Hemodynamic infusion solutions" was revealed. The analysis of the structure of infusion solutions consumption in value terms showed that the largest share in total infusion solutions consumption is also occupied by the groups of infusion solutions «Regulators of water-electrolyte and acid-base balances», "Other infusion solutions" and «infusion solutions for parenteral nutrition».

Application Protocol of Standardized Neonatal Parenteral Nutrition Formulations

With the improvements in medical technology, more premature infants and infants with congenital intestinal malformations or other conditions who need parenteral nutrition (PN) support can survive. PN technology has become an important therapeutic strategy in neonatal intensive care units. Due to differences in the qualifications of medical staffs, hospital pharmacy management, hospital level, etc, the composition and preparation methods of PN prescription vary greatly in different regions and hospitals in China. In addition, delays in the starting time of PN, unreasonable formula of nutrition components, poor prescription review, large workload involved in the preparation of PN for nurses, and waste of drugs are prone to happen. In view of these issues, our hospital independently developed standardized formulas of neonatal PN solution, which has been approved in Australia as a patented invention. Herein, we reported the composition and application protocol of this standardized PN solution for newborns.

Lipid Compositions of Total Parenteral Nutrition Affect Gut Peyer's Patches and Morphology in Mice

IntroductionAlthough parenteral nutrition (PN) is the only option for providing adequate nutrition to patients who cannot tolerate oral ingestion, it severely impairs intestinal barrier function in terms of morphology and immunity. While addition of either soybean oil (SO) or fish oil (FO) to PN partially reverses these defects, the effects of the oil composition (FO/SO ratio) on morphology and gut-associated lymphoid tissues (GALT) have yet to be elucidated. We focused on the effects of the FO/SO ratio in PN on the number of lymphocytes in Peyer's patches, immunoglobulin A levels, and intestinal structures. MethodsMale ICR mice (n = 61) were randomized into five groups; oral nutrition (Chow, n = 14) and four groups receiving PN without oral nutrition. PN solutions contained fat emulsions with the following FO:SO ratios: 0:1 (SO, n = 12), 1:11.5 (11.5FSO, n = 17),1:2 (1:2FSO, n = 13) and 1:0 (FO, n = 5). All mice underwent jugular vein catheter insertion. The PN groups were given isocaloric and isonitrogenous nutritional support with 20% of total calories from fat emulsions with equivalent fat delivery in 11.9 g/kg/d. After 5 d of each feeding, Peyer's patches lymphocytes were isolated from the small intestine, counted and analyzed with flowcytometry for determination of their phenotypes (αβTCR+, γδTCR+, CD4+, CD8+ and B cells). Villus height and crypt depth of the jejunum and ileum were evaluated with hematoxylin-eosin staining. Immunoglobulin A levels in the intestinal washings were also determined. ResultsNumbers of total lymphocytes and B lymphocytes in PP were increased in the 1:2 FSO-PN but neither in the 1:11.5 FSO nor the FO group, as compared to the SO group. There were no marked differences among the groups in numbers neither of total T cells nor in any of T cell phenotypes determined. The 1:2 FSO group showed significantly greater villus height and crypt depth than the SO group. IgA levels did not differ significantly among the four PN groups. ConclusionsThe PN with 1:2 FSO (FO:SO = 1:2) maintained lymphocyte numbers in PP and intestinal villus morphology at levels nearly the same as those obtained with chow feeding. An appropriate ratio of FO to SO in PN is expected to prevent immunological impairment and morphological atrophy of the gut associated with lack of oral nutrition.

Determination of Inorganic Ions in Parenteral Nutrition Solutions by Ion Chromatography.

A new, simple and sensitive ion chromatography (IC) method for the determination of sodium, potassium, magnesium, calcium and chloride in a parenteral nutrition (PN) solution was developed and validated. Before sample analysis, a sample pretreatment by calcination was applied which could totally remove interference from other constituents of the PN solution. Methanesulfonic acid (MSA) and sodium hydroxide were used as the mobile phase for the determination of cations and anions, respectively. The calibration curves showed good correlation between analyte peak area and concentration (r2 > 0.999). Detection limits ranged from 0.0001 to 0.02 mg/L and quantification limits from 0.0002 to 0.06 mg/L. Relative standard deviation (RSD) values for repeatability and inter-day precision did not exceed 1.0% and the recoveries for all analytes were between 99.1–101.1%. The robustness was verified by using an experimental design.

Pitfalls of iron supplementation in parenteral nutrition admixtures for children with intestinal failure.

Pediatric patients with intestinal failure are at increased risk for iron deficiency. Supplementation is not routinely included in parenteral nutrition solutions. There is currently limited research related to the safety of iron supplementation in parenteral nutrition and for intravenous forms used in patients with intestinal failure. Current American Society for Parenteral and Enteral Nutrition and ESPGHAN guidelines promote the use of enteral iron, acknowledging the risks of using iron supplementation within parenteral nutrition admixtures. We review a patient case and the current available literature related to iron in parenteral nutrition. Five major concerns are identified: peroxidation reactions, incompatibility, hypersensitivity, infection risk, and iron overload. We propose an argument against the preferential use of iron supplementation within parenteral nutrition in children with intestinal failure when enteral supplementation or intermittent parenteral infusion may be sufficient.

Higher Parenteral Electrolyte Intakes in Preterm Infants During First Week of Life: Effects on Electrolyte Imbalances.

Objectives:This study aimed to investigate the effects of a higher intake of electrolytes from parenteral nutrition (PN) on plasma electrolyte concentrations in very low birth weight (VLBW, <1500 g) infants.Methods:This was a single-center cohort study including all VLBW infants born before (n = 81) and after (n = 53) the implementation of a concentrated PN regimen. Daily nutritional intakes and plasma concentrations of sodium, chloride, potassium, phosphate, and calcium were collected from clinical charts.Results:During the first postnatal week, electrolyte intakes were higher in infants who received concentrated PN compared with infants who received original PN. Infants who received concentrated PN had a lower incidence of hypokalemia (<3.5 mmol/L; 30% vs 76%, P < 0.001) and severe hypophosphatemia (<1.0 mmol/L; 2.2% vs 17%, P = 0.02). While the relatively high prevalence of severe hypophosphatemia in infants who received original PN can be explained by a phosphorus intake below the recommendation, the potassium intake during the first 3 postnatal days (mean ± SD: 0.7 ± 0.2 mmol/kg/d) was within the recommendation. The prevalence of early hypernatremia was not affected by the different sodium intake in the 2 groups.Conclusions:In VLBW infants, a sodium-containing PN solution (about 2.7 mmol/100 mL) does not cause hypernatremia during the first days of life. Furthermore, providing at least 1 mmol potassium/kg/d during the first 3 postnatal days might be necessary to prevent early hypokalemia.

Evaluation of color changes during stability studies using spectrophotometric chromaticity measurements versus visual examination

Stability studies are essential to be able to assign an expiration date to medications. Color variation is one of the organoleptic characteristics of actives substances or medications which can indicate the presence of contaminations, impurities or degradations products. However there is no data available comparing the often used visual examination with spectrophotometric measurements during stability studies. The aim of this study was therefore to evaluate precisely how different the two methods are, by comparing the change of color of two drug formulations chosen as models, assessed by visual examination versus a spectrophotometric colorimetric analysis. Paracetamol and parenteral nutrition solutions were stored in stress conditions for up to 46 days, and were subjected to a visual examination using color reference solutions and to lightness and chromaticity measurement to determine their specific color by UV–Vis spectrophotometry. The color of paracetamol solutions changed faster when exposed to stress condition (light), as did the PNS when exposed to heat. In both cases, color variations were detected earlier and more precisely by UV–Vis spectrophotometry than by visual examination. Color measurement using an UV–Vis spectrophotometry should advantageously replace visual examination when assessing colors changes during drug stability studies.

Postoperative Vitamin Profile after Receiving a Novel Peripheral Parenteral Nutrition Solution: Multicenter Randomized Controlled Phase III Trial

Introduction: We assessed the efficacy and safety of OPF-105, a novel all-in-one peripheral parenteral nutrition (PPN) solution containing multivitamins by the U.S. Food and Drug Administration in 2000 (FDA2000 recommendation). Methods: We conducted a phase III trial administering OPF-105 or BFL (combination of a commercially available PPN solution and fat emulsion) to patients after gastrointestinal (GI) tract surgery from postoperative day (POD) 1 up to POD14. Until POD7, nutrients were provided only with OPF-105 or BFL. After blood sampling on POD8, oral food intake was permitted. PPN was administered according to the amount of food intake. Results: Efficacy endpoints were assessed in 99 subjects (OPF group: 52; BFL group: 47). The levels of blood proteins and fatty acids in the two groups were similar on POD8. The transition of these mean levels was similar in both groups from POD1 or 2 to POD9 to 15. The mean preoperative blood vitamin levels were within reference intervals (RIs). On POD1 (before administration), the mean levels of most blood vitamins decreased compared to those of the preoperative levels. In the BFL group, the mean blood levels of vitamin B2, B6, pantothenic acid (PA), folic acid (FA), biotin, and C decreased below or near the lower limit of RIs on POD8, and the mean blood levels of vitamin B6 and C remained low from POD9 to 15. In the OPF group, the mean blood levels of vitamins, excluding vitamin K, were within RIs on POD8 and POD9 to 15. The mean levels of blood vitamin K increased over the upper limit of RIs on POD8 but within RIs from POD9 to 15. There was no obvious difference in the incidence of adverse events between the two groups, which is common after GI tract surgeries. Conclusion: Blood vitamin levels decreased when patients were administered PPN without vitamin supplementation during the first week after surgery. The novel PPN formula containing multivitamins recommended by FDA2000 can be safely administered to postoperative patients to maintain blood vitamin levels.

末梢静脈からのアミノ酸・水溶性ビタミン加総合電解質輸液製剤の投与中にカンジダによるカテーテル関連血流感染症および感染性血栓性静脈炎を来した1例(Candidal peripheral–line–associated blood stream infection (PLABSI) and suppurative thrombophlebitis associated with peripheral parenteral nutrition solution supplemented with amino acids and water–soluble multivitamins)

要旨近年，末梢静脈栄養（PPN），とくにビタミンB7（ビオチン）に関連したCandida属による末梢静脈カテーテル関連血流感染症（PLABSI）の報告が散見される。PPNは日常よく使用される治療介入で，今回，PPNが関与したと考えられる重症カンジダ血症を経験した。1型糖尿病でインスリン治療中の63歳女性。嘔吐と食事摂取不良で前医入院，同日より絶食および末梢静脈からのアミノ酸・水溶性ビタミン加総合電解質輸液製剤（パレプラス®）で管理開始となった。上部消化管内視鏡検査で胃粘膜下幽門癌が疑われ手術予定だったが，39℃台の発熱を認め，血液培養でC. albicansが検出されミカファンギンが投与開始された。しかし解熱せず徐々に呼吸状態が悪化しカンジダ血症による急性呼吸窮迫症候群の診断で当院転院となった。両前腕の末梢静脈カテーテル刺入部とその頭側に索状の発赤腫脹を認め，同部を切開すると排膿があり検鏡でC. albicansを認めた。切開排膿後徐々に解熱，呼吸状態も改善し，PLABSIであったと考えられた。本症例ではビタミンB7を含むPPNがCandida属によるPLABSIのリスクを上昇させた可能性がある。PLABSIは疑わなければ診断は困難で，ときに重篤な敗血症に進行する可能性もあり，とくに易感染性患者の不明熱ではPLABSIを疑い輸液の刺入部を注意深く観察することが重要である。

Impact of infusion frequency on quality of life in patients receiving home parenteral nutrition.

Home parenteral nutrition (HPN) may be needed as a long-term therapy for patients with chronic intestinal failure whose clinical condition does not allow complete weaning of the parenteral nutrition (PN) solution. HPN is a time-consuming and clinically complex therapy and can negatively affect quality of life (QOL). The level of dependency on HPN, specifically, infusion frequency, has been proposed as a factor that may have an effect on QOL in patients receiving HPN. The primary aim of this qualitative review is to identify the impact of HPN frequency (days per week of HPN infusion) on QOL measurements in adult patients receiving HPN. A comprehensive literature search was completed in PubMed and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases. Primary clinical research studies were included if they were conducted in adult patients receiving HPN and included the assessment of the associations between the frequency of HPN infusion and QOL measurements. Six articles ultimately met the criteria for this review. There was variability among the studies, including use of different tools to measure QOL. However, all six studies suggest that a reduction in HPN frequency may be associated with an improvement in QOL. Whenever patients' clinical situation allows, a reduction in HPN frequency should be considered to improve QOL in patients receiving HPN.

Quantitative analysis on bioavailability of insulin in bags of parenteral nutrition

Rationale: Hyperglycemia is reported in more than 50% of patients receiving parenteral nutrition (PN).A gold standard for the administration of insulin in PN solutions does not exist due to its unknown bioavailability. We performed a quantitative analysis of insulin bioavailability in the main types of PN bags, analysing the matrix and time effects, as well as the effect related to the presence of vitamin supplements.