A Single-Center Retrospective Study on the Initiation of Peritoneal Dialysis in Patients With Cardiorenal Syndrome and Subsequent Hospitalizations.

BACKGROUND: Inotropic dependence and diuretic resistance in patients with cardiorenal syndrome (CRS) lead to frequent hospitalizations and are associated with high mortality. Starting peritoneal dialysis (PD) acutely (within 2 weeks of a heart failure hospitalization) offers effective volume removal without hemodynamic compromise in this population. There is little data on this approach in the North American literature. OBJECTIVE: To determine whether volume-overloaded patients with CRS on maximal doses of diuretic therapy had reduced hospitalization for heart failure following PD initiation. DESIGN: Retrospective cohort study. SETTING: Academic hospital network (University Health Network, Toronto, Ontario). PATIENTS: Patients with CRS receiving a bedside catheter and starting PD within 2 weeks of insertion at the University Health Network from January 1, 2013, to December 31, 2018. METHODS AND MEASUREMENTS: Data for heart failure-related hospitalizations and length of stay 6 months before and after PD initiation were collected. Patients who died, switched to hemodialysis, or were transferred to another facility within 6 months of starting PD were excluded from the analysis. RESULTS: We identified 31 patients with CRS who had a bedside PD catheter inserted. The average age of patients was 66.0 ± 13.0 years. There were 7 (22.6%) deaths and 4 (12.9%) transfers to other programs or hemodialysis within 6 months of catheter insertion. After exclusion, we analyzed hospitalization and length of stay data for 20 patients. The hospitalization rate 6 months before PD initiation was 6.9 admissions per 1000 patient-days. This decreased to 2.5 admissions per 1000 patient-days after PD initiation. In addition, there was also a significant reduction in the average length of stay per hospitalization (24.1-3.9 days; P = .001). LIMITATIONS: Our study did not assess the severity of heart failure symptoms using a standardized functional classification system. We did not assess quality of life and illness intrusiveness scores before and after starting dialysis, nor did we capture non-heart-failure-related hospitalizations or external admissions at other hospital sites. We limited eligibility to clinically stable patients with no prior major abdominal surgical history in a single Canadian PD program using bedside ultrasound approach for catheter insertions by experienced nephrologists and included a small number of patients. CONCLUSIONS: Volume-overloaded patients with CRS receiving maximal diuretic therapy have lower hospitalization rates and shorter stays after initiation of PD. The development of a bedside PD catheter insertion program and close collaboration between nephrology and cardiology services may facilitate acute start dialysis in this population.

CONTEXTE: La dépendance inotrope et la résistance aux diurétiques entraînent de fréquentes hospitalisations et sont associées à une mortalité élevée chez les patients atteints du syndrome cardio-rénal (SCR). Dans cette population, l'amorce de la dialyse péritonéale (DP) en temps opportun, soit dans les deux semaines suivant une hospitalisation pour insuffisance cardiaque, permet d'éliminer efficacement la surcharge liquidienne sans compromettre l'hémodynamie. On trouve toutefois peu de données sur cette approche dans la littérature nord-américaine. OBJECTIF: Déterminer si les patients atteints du SCR et présentant une surcharge volémique qui reçoivent une dose maximale de diurétiques sont hospitalisés moins souvent pour insuffisance cardiaque après l'amorce de la DP. TYPE D'ÉTUDE: Une étude de cohorte rétrospective. CADRE: Un réseau de centres hospitaliers universitaires (University Health Network) de Toronto (Ontario). SUJETS: Des patients atteints du SCR, hospitalisés au University Health Network entre le 1er janvier 2013 et le 31 décembre 2018, à qui on avait installé un cathéter de DP au chevet et qui avaient amorcé un traitement de dialyse dans les deux semaines suivant l'insertion. MÉTHODOLOGIE: On a recueilli les données sur les hospitalisations pour insuffisance cardiaque et la durée des séjours dans les six mois avant et après l'initiation de la PD. Les patients décédés, passés à l'hémodialyse ou ayant été transférés vers un autre centre dans les six mois suivant l'amorce de la PD ont été exclus de l'analyse. RÉSULTATS: Nous avons identifié 31 patients atteints du SCR, âgés en moyenne de 66,0 ±13,0 ans, à qui un cathéter de DP avait été installé au chevet. Dans les six mois suivant l'insertion du cathéter, sept patients (22,6 %) sont décédés et quatre (12,9 %) ont été transférés dans un autre centre ou sont passés à l'hémodialyse. À la suite de ces exclusions, l'analyse a porté sur les hospitalisations et les durées de séjour de 20 patients. Le taux d'hospitalisation dans les six mois précédant l'initiation de la DP s'établissait à 6,9 admissions par 1 000 jours-patient; un taux qui est passé à 2,5 admissions par 1 000 jours-patient une fois la DP amorcée. On a également observé une réduction significative de la durée moyenne du séjour, celle-ci étant passée de 24,1 à 3,9 jours (p=0,001). LIMITES: La gravité des symptômes de l'insuffisance cardiaque n'a pas été évaluée à l'aide d'un système de classification fonctionnel normalisé. Les scores de la qualité de vie et du caractère intrusif de la maladie n'ont pas été évalués avant et après l'amorce de la dialyse. Les données des hospitalisations non liées à l'insuffisance cardiaque et des admissions externes dans d'autres sites n'ont pas été colligées. L'admissibilité a été limitée aux patients cliniquement stables et sans antécédent de chirurgie abdominale majeure. Les participants provenaient d'un seul programme canadien de DP où la méthode d'insertion du cathéter utilise une approche par ultrasons pratiquée par un néphrologue expérimenté. Enfin, l'étude porte sur un faible échantillon de sujets. CONCLUSION: Les patients atteints du SCR et présentant une surcharge volémique qui reçoivent une dose maximale de diurétiques ont été moins souvent hospitalisés à la suite de l'amorce de la DP. Le développement d'un programme d'insertion du cathéter de DP au chevet du patient et une collaboration étroite entre les services de cardiologie et de néphrologie pourraient faciliter l'amorce rapide de la dialyse dans cette population.

Quality improvement in pediatric nephrology-a practical guide.

Improving quality of care delivery is an important focus for all practicing physicians. Frontline clinicians are in a great position to identify clinical problems and find innovative solutions. The current review describes the method used for quality improvement based on the Model for Improvement, a structural framework to guide improvement work. At its basis are three fundamental questions: What are we trying to accomplish? How will I know that a change will lead to improvement? And what changes could we make that will result in improvement? This preparation phase aims to identify and understand the problem, choose an intervention, and determine reliable measures to gauge improvement. The intervention is then tested using PLAN-DO-STUDY-ACT (PDSA) cycles, an iterative approach to systematically improve processes and outcomes. PLAN focuses on defining the goal of the cycle and describing in details what will be done. DO concentrates on the concrete application of the plan. STUDY focuses on data analyses as ACT identifies lessons learned from the cycle and orientate the goals of the following PDSA cycle. Learning from each cycle, developing an interdisciplinary team and repeated interventions are core principles involved in implementing a sustainable quality improvement program. The Model for Improvement will be illustrated by a common quality problem in pediatric nephrology.

Supporting the Establishment of New Home Dialysis Programs Through the Explore Home Dialysis Program.

INTRODUCTION: The globally increasing prevalence of chronic kidney disease has resulted in an ever-growing demand for renal replacement therapy. Although programs are present around the world, there is a paucity of immersive educational programs that train clinicians and administrators to develop new home dialysis programs. Explore Home Dialysis (EHD) is a program created to fill this gap. METHODS: We present the results of the evaluation of the EHD program. Our team interviewed 23 clinicians and administrators who participated in the EHD program. We also assessed country-specific needs and challenges associated with home dialysis. RESULTS: The 4 main findings include (i) the evaluation of the effectiveness of the EHD program; (ii) the need for an educational program to train individuals on how to deploy home dialysis programs; (iii) evidence that such an educational program is beneficial to participants and for the establishment of new home dialysis programs; and (iv) the identification of barriers to the development of home dialysis programs in countries represented in this study. The data show an increased demand, with strong patient and provider interest in establishing new programs, interest in accessing resources to train clinical and administrative staff in how to run a home dialysis program, and positive feedback about the EHD program in general. CONCLUSIONS: The data from this study were used in the next iteration of the EHD program, to inform clinicians about challenges in the deployment of new home dialysis programs, and to present educational resources that need to be developed in the future.

Renal thrombotic microangiopathy and pulmonary arterial hypertension in a patient with late-onset cobalamin C deficiency.

Cobalamin C (cblC) deficiency is the most commonly inherited inborn error of vitamin B12 metabolism. It is characterized by multisystem involvement with severe neurological, hematological, renal and cardiopulmonary manifestations. Disease is most commonly diagnosed early in the first decade of life. We report a case of a 20-year-old woman who developed severe pulmonary arterial hypertension while under nephrologic follow-up for chronic kidney disease. She had initially presented at 14 years of age with visual disturbance and acute renal failure and been diagnosed with thrombotic thrombocytopenic purpura on the basis of kidney biopsy findings of thrombotic microangiopathy and compatible ADAMTS13 (a disentegrin and metalloproteinase with a thrombospondin type 1 motif member 13). When cblC deficiency was eventually diagnosed, remarkable improvement in cardiopulmonary function was evident upon initiation of treatment. This case highlights the importance of a timely diagnosis and initiation of treatment for cblC deficiency. Clinical diagnosis may be challenged by asynchronous organ symptom presentation and by misleading laboratory tests, in this case: an initial low ADAMTS13. A simple test of plasma homocysteine level should be encouraged in cases of thrombotic microangiopathy and/or pulmonary artery hypertension.

Self-cannulation of the vascular access in home hemodialysis: Overcoming patient-level barriers.

Patients with end-stage kidney disease who are considering home hemodialysis (HHD) face the challenge of learning to self-cannulate their arteriovenous access. Current practice discourages the use of tunneled central venous catheters, with recent indications that self-cannulating patients have superior outcomes. Patient-level barriers do not appear to preclude a successful HHD program and should not be viewed as insurmountable by healthcare staff or patients. The healthcare team must address patient fears while instructing the patient to perform self-cannulation safely. Identification and understanding of the barriers perceived by the patient will allow the patient and healthcare team work collaboratively, toward the goal of independence with self-cannulation both during initial training and follow-up care. The aim of this review was to provide a practical resource to aid in the identification and resolution of these patient-level barriers, with the overall goal of improving the patient experience and medical outcomes in home hemodialysis programs.

Does peritoneal dialysis have a role in urgent-start end-stage kidney disease?

Despite its many positive attributes, peritoneal dialysis remains underutilized, particularly in the United States. Urgent-start peritoneal dialysis (PD) has been proposed as a method of increasing PD prevalence. Urgent-start PD has been shown to be safe, feasible, and effective. However, urgent-start PD is also accompanied by several multidimensional challenges. This article is intended to equip the reader with a practical sense of whether an urgent-start PD program would be appropriate in his or her own clinical context and if appropriate, what factors would be necessary for such a program to flourish. As such, we summarize latent factors, which are necessary to consider before instituting an urgent-start PD. Then, using a series of clinical vignettes, highlight the component parts of a successful urgent-start PD program and the patient population who stand to benefit most from this strategy. The discussion is then balanced by presenting limitations to consider in the urgent-start PD approach.

Ultrasound-Guided Cannulation of the Hemodialysis Arteriovenous Access.

Successful cannulation of the arteriovenous access for patients with end-stage kidney failure to allow catheter-free hemodialysis is associated with superior patient outcomes. With an increasing rate of arteriovenous access creation, coupled with increasing dialysis patient age, the "difficult-to-cannulate" access is becoming more commonplace. Ultrasound-guided cannulation aims to improve first-time successful cannulations and minimize cannulation-associated complications such as infiltration and hematoma formation, minimizing delays in access use and reducing catheter dependency. Ultrasound-guided cannulation has the potential to not only improve patient experience but also reduce morbidity associated with complications, dialysis catheter dependency, and subsequent healthcare costs. A smooth and complication-free dialysis initiation is also important for the longevity of technique survival and self-cannulation in home hemodialysis patients. Appropriate training of the ultrasound operator is required to ensure competent image acquisition with simultaneous needling. There are various approaches and considerations in choosing how to apply the ultrasound probe and needle the access, which are often governed by personal choice, training, and institutional patterns of practice more than a robust evidence base. Future research should focus on providing more clarity on the optimal method of utilizing ultrasound guidance in arteriovenous access cannulation, the precise indications for its use and, lastly, the benefits it confers compared to traditional blind cannulation.

Renal Tubular Toxicity Associated With Rosuvastatin Therapy.

Preapproval clinical trials examining the safety and efficacy of rosuvastatin demonstrated an increased incidence of proteinuria, hematuria, rhabdomyolysis, and other acute kidney injury of unknown cause at high doses. The latter cases manifested with urine sediment findings and in some cases, renal histology, indicating renal tubular injury in the absence of rhabdomyolysis. Despite these provocative findings, there have been very few reports in the literature regarding non-rhabdomyolysis-mediated acute kidney injury associated with high-dose rosuvastatin since its widespread introduction more than a decade ago, suggesting that it is either a rare entity or systematically underdiagnosed and under-reported. We present a case of renal tubular toxicity attributable to the initiation of rosuvastatin treatment at a dose of 40mg in a patient with no prior evidence of kidney disease. Tubular toxicity should be considered in cases of unexplained kidney injury in the setting of exposure to a potent statin such as rosuvastatin, particularly at high dose. The limited evidence suggests a good kidney prognosis following withdrawal of the agent in these cases.

How to Diagnose Solutions to a Quality of Care Problem.

To change a particular quality of care outcome within a system, quality improvement initiatives must first understand the causes contributing to the outcome. After the causes of a particular outcome are known, changes can be made to address these causes and change the outcome. Using the example of home dialysis (home hemodialysis and peritoneal dialysis), this article within this Moving Points feature on quality improvement will provide health care professionals with the tools necessary to analyze the steps contributing to certain outcomes in health care quality and develop ideas that will ultimately lead to their resolution. The tools used to identify the main contributors to a quality of care outcome will be described, including cause and effect diagrams, Pareto analysis, and process mapping. We will also review common change concepts and brainstorming activities to identify effective change ideas. These methods will be applied to our home dialysis quality improvement project, providing a practical example that other kidney health care professionals can replicate at their local centers.

Benefits of a transfer clinic in adolescent and young adult kidney transplant patients.

BACKGROUND: Adolescent and young adult kidney transplant recipients have worse graft outcomes than older and younger age groups. Difficulties in the process of transition, defined as the purposeful, planned movement of adolescents with chronic health conditions from child to adult-centered health care systems, may contribute to this. Improving the process of transition may improve adherence post-transfer to adult care services. OBJECTIVE: The purpose of this study is to investigate whether a kidney transplant transfer clinic for adolescent and young adult kidney transplant recipients transitioning from pediatric to adult care improves adherence post-transfer. METHODS: We developed a joint kidney transplant transfer clinic between a pediatric kidney transplant program, adult kidney transplant program, and adolescent medicine at two academic health centers. The transfer clinic facilitated communication between the adult and pediatric transplant teams, a face-to-face meeting of the patient with the adult team, and a meeting with the adolescent medicine physician. We compared the outcomes of 16 kidney transplant recipients transferred before the clinic was established with 16 patients who attended the clinic. The primary outcome was a composite measure of non-adherence. Non-adherence was defined as either self-reported medication non-adherence or displaying two of the following three characteristics: non-attendance at clinic, non-attendance for blood work appointments, or undetectable calcineurin inhibitor levels within 1 year post-transfer. RESULTS: The two groups were similar at baseline, with non-adherence identified in 43.75 % of patients. Non-adherent behavior in the year post-transfer, which included missing clinic visits, missing regular blood tests, and undetectable calcineurin inhibitor levels, was significantly lower in the cohort which attended the transfer clinic (18.8 versus 62.5 %, p = 0.03). The median change in estimated glomerular filtration rate (eGFR) in the year following transfer was smaller in the group that attended the transition clinic (-0.9 ± 13.2 ml/min/1.73 m(2)) compared to those who did not (-12.29 ± 14.9 ml/min/1.73 m(2)), p = 0.045. CONCLUSIONS: Attendance at a single kidney transplant transfer clinic was associated with improved adherence and renal function in the year following transfer to adult care. If these changes are sustained, they may improve long-term graft outcomes for adolescent kidney transplant recipients.

CONTEXTE: L'évolution favorable du greffon est plus souvent compromise chez les adolescents et les jeunes adultes transplantés du rein que chez les enfants et les adultes ayant subi la même intervention. Ces jeunes patients qui sont en général atteints de maladies chroniques, rencontrent des difficultés au cours de la période de transition entre le moment de leur transfert des unités de soins pédiatriques vers les unités de soins pour adultes, et celles-ci pourraient contribuer à ce pronostic défavorable. Des améliorations apportées au processus de transition pourraient favoriser l'adhésion de ces jeunes patients à leur protocole de traitement à la suite leur transfert dans les services de soins pour adultes. OBJECTIF: Le but de cette étude est de vérifier si la fréquentation d'une clinique de transfert pouvait améliorer l'adhésion des adolescents et des jeunes adultes greffés du rein à leur traitement, après leur transfert d'un établissement pédiatrique vers des services de soins pour adultes. MÉTHODES: Nous avons développé, au sein de deux centres universitaires de santé, deux cliniques conjointes de transfert pour les transplantés du rein. Ces cliniques étaient formées d'un programme de transplantation rénale pédiatrique, d'un programme de greffe rénale pour adultes et d'une clinique de médecine adolescente. La mise en place d'une clinique de transfert a facilité la communication entre les équipes de transplantation pour adultes et pédiatriques, a permis aux patients adolescents de rencontrer les équipes de transplantation pour adultes et de rencontrer des spécialistes de la médecine adolescente. Nous avons comparé les résultats de 16 jeunes greffés du rein qui avaient été transférés dans les centres de soins pour adultes avant la mise en place de la clinique de transfert avec les résultats de 16 patients qui ont fréquenté la clinique de transfert avant leur transition vers les unités de soins pour adultes. Le principal résultat a été une mesure composite d'adhésion au traitement. La non-adhésion a été définie soit par l'aveu de la part du patient de sa non-observance du traitement médicamenteux, soit par la manifestation de deux des trois comportements suivants dans le suivi du patient : la non-fréquentation de la clinique de transfert, le défaut de se présenter aux rendez-vous pour les analyses sanguines ou un niveau indécelable des inhibiteurs de calcineurine dans l'année suivant le transfert vers les services de soins pour adultes. RÉSULTATS: Les patients des deux groupes présentaient des caractéristiques similaires au début de l'étude, et 43,75 % d'entre eux avaient admis ne pas adhérer entièrement au traitement. Le nombre de comportements identifiés comme signes de non-adhésion au traitement tels que manquer des rendez-vous à la clinique de transfert, ne pas se présenter pour les analyses sanguines ou un niveau d'inhibiteurs de la calcineurine indécelable dans l'année suivant le transfert, étaient nettement inférieurs dans la cohorte de patients qui fréquentait la clinique de transfert que dans celle des patients qui avaient été transférés directement dans les services de soins pour adultes (18,8 % versus 62,5 %, p = 0,03). Qui plus est, les patients ayant fréquenté la clinique de transfert présentaient une variation médiane plus faible du débit de filtration glomérulaire (−0,9 ± 13,2 ml/min/1,73 m2) lorsque comparée à celle du groupe ayant été transféré directement (−12,2 ± 14,9 ml/min/1,73 m2), p = 0,045. CONCLUSIONS: Le fait de fréquenter une clinique de transfert pour les greffés du rein, dans l'année suivant leur transfert dans un centre de soins pour adultes, donne lieu à la fidélisation des jeunes transplantés du rein à l'égard de leur traitement et ceci favorise le rétablissement de leur fonction rénale. Le maintien de ces changements de comportement pourrait améliorer le pronostic à long terme quant à l'évolution du greffon chez les adolescents et les jeunes adultes greffés du rein.

Hyperchloremic Metabolic Acidosis due to Cholestyramine: A Case Report and Literature Review.

Cholestyramine is a bile acid sequestrant that has been used in the treatment of hypercholesterolemia, pruritus due to elevated bile acid levels, and diarrhea due to bile acid malabsorption. This medication can rarely cause hyperchloremic nonanion gap metabolic acidosis, a complication featured in this report of an adult male with concomitant acute kidney injury. This case emphasizes the caution that must be taken in prescribing cholestyramine to patients who may also be volume depleted, in renal failure, or taking spironolactone.

Performance of Temporary Hemodialysis Catheter Insertion by Nephrology Fellows and Attending Nephrologists.

BACKGROUND AND OBJECTIVES: Concerns have been raised about nephrology fellows' skills in inserting temporary hemodialysis catheters. Less is known about temporary hemodialysis catheter insertion skills of attending nephrologists supervising these procedures. The aim of this study was to compare baseline temporary hemodialysis catheter insertion skills of attending nephrologists with the skills of nephrology fellows before and after a simulation-based mastery learning (SBML) intervention. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This pre- post-intervention study with a pretest-only comparison group was conducted at the University of Toronto in September of 2014. Participants were nephrology fellows and attending nephrologists from three university-affiliated academic hospitals who underwent baseline assessment of internal jugular temporary hemodialysis catheter insertion skills using a central venous catheter simulator. Fellows subsequently completed an SBML intervention, including deliberate practice with the central venous catheter simulator. Fellows were expected to meet or exceed a minimum passing score at post-test. Fellows who did not meet the minimum passing score completed additional deliberate practice. Attending nephrologist and fellow baseline performance on the temporary hemodialysis catheter skills assessment was compared. Fellows' pre- and post-test temporary hemodialysis catheter insertion performance was compared to assess the effectiveness of SBML. The skills assessment was scored using a previously published 28-item checklist. The minimum passing score was set at 79% of checklist items correct. RESULTS: In total, 19 attending nephrologists and 20 nephrology fellows participated in the study. Mean attending nephrologist checklist scores (46.1%; SD=29.5%) were similar to baseline scores of fellows (41.1% items correct; SD=21.4%; P=0.55). Only two of 19 attending nephrologists (11%) met the minimum passing score at baseline. After SBML, fellows' mean post-test score improved to 91.3% (SD=6.9%; P<0.001). Median time between pre- and post-test was 24 hours. CONCLUSIONS: Attending nephrologists' baseline temporary hemodialysis catheter insertion skills were highly variable and similar to nephrology fellows' skills, with only a small minority able to competently insert a temporary hemodialysis catheter. SBML was extremely effective for training fellows and should be considered for attending nephrologists who supervise temporary hemodialysis catheter insertions.

The intuitive case for ß-blockers in patients with ESRD.

Sudden cardiac death (SCD) is common in dialysis patients accounting for up to 25% of all-cause mortality. Unlike in the general population, occlusive coronary artery disease is implicated in a minority of these deaths. Activation of the sympathetic nervous system is prevalent in the dialysis population and may underlie this high rate of SCD. ß-blockers reduce SCD in the general population and, given their mode of action, ß-blockers would seem to be an ideal class of agents to prevent SCD in dialysis patients. In this review, we will explore the etiology of SCD in dialysis patients and discuss the evidence supporting the use of ß-blockers in patients with ESRD. We will also examine potential impediments to the use ß-blocker in the dialysis population and outline directions for future trials in this area.

A randomized controlled trial comparing mupirocin and polysporin triple ointments in peritoneal dialysis patients: the MP3 Study.

BACKGROUND AND OBJECTIVES: Infectious complications remain a significant cause of peritoneal dialysis (PD) technique failure. Topical ointments seem to reduce peritonitis; however, concerns over resistance have led to a quest for alternative agents. This study examined the effectiveness of applying topical Polysporin Triple ointment (P(3)) against mupirocin in a multi-centered, double-blind, randomized controlled trial. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: PD patients routinely applied either P(3) or mupirocin ointment to their exit site. Patients were followed for 18 months or until death or catheter removal. The primary study outcome was a composite endpoint of exit-site infection (ESI), tunnel infection, or peritonitis. RESULTS: Seventy-five of 201 randomized patients experienced a primary outcome event (51 peritonitis episodes, 24 ESIs). No difference was seen in the time to first event for P(3) (13.2 months; 95% confidence interval, 11.9-14.5) and mupirocin (14.0 months; 95% confidence interval, 12.7-15.4) (P=0.41). Twice as many patients reported redness at the exit site in the P(3) group (14 versus 6, P=0.10). Over the complete study period, a higher rate per year of fungal ESIs was seen in patients using P(3) (0.07 versus 0.01; P=0.02) with a corresponding increase in fungal peritonitis (0.04 versus 0.00, respectively; P<0.05). CONCLUSIONS: This study shows that P(3) is not superior to mupirocin in the prophylaxis of PD-related infections. Colonization of the exit site with fungal organisms is of concern and warrants further study. As such, the use of P(3) over mupirocin is not advocated in the prophylaxis of PD-related infections.

Hyponatraemia caused by LGI1-associated limbic encephalitis.

Limbic encephalitis (LE), once thought to be a rare paraneoplastic phenomenon, is increasingly diagnosed in patients without malignancy. Autoimmune LE has emerged as a distinct clinical entity. Autoantibodies to neuronal cell surface proteins have been described and may now be tested for. This has led to an exponential increase in the number of cases being reported. The most recently implicated autoantibody is to the leucine-rich anti-glioma 1 protein (LGI1). This protein is involved in synaptic transmission and inherited loss-of-function mutations cause autosomal dominant lateral temporal epilepsy. LGI1 is also expressed in specific tubules in the kidney. Anti-leucine-rich anti-glioma 1 protein (anti-LGI1) LE presents with sub acute onset of progressive neurological, cognitive and psychiatric disturbance. The condition is complicated in up to 60% of cases with severe and life threatening hyponatraemia. As well as causing significant morbidity, the co-existence of hyponatraemia may confuse the initial diagnosis. We present a case of anti-LGI1 which was complicated by hyponatraemia with a comprehensive review of the literature.