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OBJECTIVE: To report our experience with the combination of radical surgical excision and intestinal transplantation in patients with recurrent pseudomyxoma peritonei (PMP) not amenable to further cytoreductive surgery (CRS). BACKGROUND: CRS and heated intraoperative peritoneal chemotherapy are effective treatments for many patients with PMP. In patients with extensive small bowel involvement or nonresectable recurrence, disease progression results in small bowel obstruction, nutritional failure, and fistulation, with resulting abdominal wall failure. METHODS: Between 2013 and 2022, patients with PMP who had a nutritional failure and were not suitable for further CRS underwent radical debulking and intestinal transplantation at our centre. RESULTS: Fifteen patients underwent radical exenteration of affected intra-abdominal organs and transplantation adapted according to the individual case. Eight patients had isolated small bowel transplantation and 7 patients underwent modified multivisceral transplantation. In addition, in 7 patients with significant abdominal wall tumor involvement, a full-thickness vascularized abdominal wall transplant was performed. Two of the 15 patients died within 90 days due to surgically related complications. Actuarial 1-year and 5-year patient survivals were 79% and 55%, respectively. The majority of the patients had significant improvement in quality of life after transplantation. Progression/recurrence of disease was detected in 91% of patients followed up for more than 6 months. CONCLUSION: Intestinal/multivisceral transplantation enables a more radical approach to the management of PMP than can be achieved with conventional surgical methods and is suitable for patients for whom there is no conventional surgical option. This complex surgical intervention requires the combined skills of both peritoneal malignancy and transplant teams.
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Hipertermia Inducida , Neoplasias Peritoneales , Seudomixoma Peritoneal , Humanos , Seudomixoma Peritoneal/cirugía , Seudomixoma Peritoneal/patología , Estudios de Seguimiento , Calidad de Vida , Neoplasias Peritoneales/cirugía , Peritoneo/patología , Procedimientos Quirúrgicos de Citorreducción/métodos , Hipertermia Inducida/métodos , Estudios Retrospectivos , Terapia CombinadaRESUMEN
NOD2 is an intracellular sensor that contributes to immune defense and inflammation. Here we investigated whether NOD2 mediates its effects through control of microRNAs (miRNAs). miR-29 expression was upregulated in human dendritic cells (DCs) in response to NOD2 signals, and miR-29 regulated the expression of multiple immune mediators. In particular, miR-29 downregulated interleukin-23 (IL-23) by targeting IL-12p40 directly and IL-23p19 indirectly, likely via reduction of ATF2. DSS-induced colitis was worse in miR-29-deficient mice and was associated with elevated IL-23 and T helper 17 signature cytokines in the intestinal mucosa. Crohn's disease (CD) patient DCs expressing NOD2 polymorphisms failed to induce miR-29 upon pattern recognition receptor stimulation and showed enhanced release of IL-12p40 on exposure to adherent invasive E. coli. Therefore, we suggest that loss of miR-29-mediated immunoregulation in CD DCs might contribute to elevated IL-23 in this disease.
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Enfermedad de Crohn/inmunología , Células Dendríticas/inmunología , Interleucina-23/metabolismo , MicroARNs/metabolismo , Proteína Adaptadora de Señalización NOD2/metabolismo , Factor de Transcripción Activador 2/metabolismo , Animales , Células Cultivadas , Células Dendríticas/metabolismo , Escherichia coli/inmunología , Infecciones por Escherichia coli/inmunología , Humanos , Inflamación/inmunología , Subunidad p40 de la Interleucina-12/metabolismo , Mucosa Intestinal/inmunología , Ratones , Ratones Noqueados , MicroARNs/genética , Proteína Adaptadora de Señalización NOD2/genética , Polimorfismo de Nucleótido Simple , Células Th17/inmunologíaRESUMEN
Combining vascularized composite allotransplantation (VCA) with intestinal transplantation to achieve primary abdominal closure has become a feasible procedure. Besides facilitating closure, the abdominal wall can be used to monitor intestinal rejection. As the inclusion of a VCA raises the possibility of an enhanced alloimmune response, we investigated the incidence and clinical effect of de novo donor-specific HLA antibodies (dnDSA) in a cohort of patients receiving an intestinal transplant with or without a VCA. The sequential clinical study includes 32 recipients of deceased donor intestinal and VCA transplants performed between 2008 and 2015; eight (25%) modified multivisceral transplants and 24 (75%) isolated small bowel transplants. A VCA was used in 18 (56.3%) cases. There were no episodes of intestinal rejection without VCA rejection. Fourteen patients (14 of 29; 48.3%) developed dnDSA. In the VCA group, fewer patients developed dnDSA; six of 16 (37.5%) VCA vs. eight of 13 (61.5%) non-VCA. There was no statistically significant difference in one- and 3-year overall graft survival stratified for the presence of dnDSA; P = 0.286. In the study, there is no evidence that the addition of a VCA increases the incidence of dnDSA formation compared to transplantation of the intestine alone.
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Antígenos HLA/inmunología , Intestino Delgado/trasplante , Inmunología del Trasplante , Alotrasplante Compuesto Vascularizado , Adulto , Anciano , Femenino , Rechazo de Injerto/inmunología , Supervivencia de Injerto , Humanos , Terapia de Inmunosupresión , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto JovenRESUMEN
BACKGROUND: Campylobacter is the leading cause of bacterial gastroenteritis worldwide, and contaminated chicken is a significant vehicle for spread of the disease. This study aimed to assess consumers' knowledge of safe chicken handling practices and whether their expectations for food safety labelling of chicken are met, as a strategy to prevent campylobacteriosis. METHODS: We conducted a cross-sectional survey of 401 shoppers at supermarkets and butcheries in Wellington, New Zealand, and a systematic assessment of content and display features of chicken labels. RESULTS: While 89% of participants bought, prepared or cooked chicken, only 15% knew that most (60-90%) fresh chicken in New Zealand is contaminated by Campylobacter. Safety and correct preparation information on chicken labels, was rated 'very necessary' or 'essential' by the majority of respondents. Supermarket chicken labels scored poorly for the quality of their food safety information with an average of 1.7/5 (95% CI, 1.4-2.1) for content and 1.8/5 (95% CI, 1.6-2.0) for display. CONCLUSIONS: Most consumers are unaware of the level of Campylobacter contamination on fresh chicken and there is a significant but unmet consumer demand for information on safe chicken preparation on labels. Labels on fresh chicken products are a potentially valuable but underused tool for campylobacteriosis prevention in New Zealand.
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Infecciones por Campylobacter/prevención & control , Etiquetado de Alimentos/normas , Inocuidad de los Alimentos , Enfermedades Transmitidas por los Alimentos/prevención & control , Carne/microbiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Animales , Campylobacter/aislamiento & purificación , Pollos/microbiología , Culinaria , Estudios Transversales , Femenino , Microbiología de Alimentos , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Persona de Mediana Edad , Nueva Zelanda , Adulto JovenRESUMEN
PURPOSE OF REVIEW: The purpose of this article is to review the existing literature on the current indications, surgical techniques, immunosuppressive therapy and outcomes following intestinal transplantation (ITx). RECENT FINDINGS: Over recent years, ITx has become a more common operation with approximately 2500 procedures carried out worldwide by 2014. It is reserved for patients with intestinal failure and who have developed complications of home parenteral nutrition or who have a high risk of dying from their underlying disease. Recent advances such as the improvement in survival rates, not only for isolated small bowel transplants but also following inclusion of a liver graft in combined liver-small bowel transplant, and the utility of citrulline as a noninvasive biomarker to appreciate acute rejection herald an exciting shift in the field of ITx. SUMMARY: With advancements in immunosuppressive drugs, induction regimens, standardization of surgical techniques and improved postoperative care, survival is increasing. In due course, it will most likely become as good as remaining on home parenteral nutrition and as such could become a viable first-line option.
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Enfermedades Intestinales/cirugía , Intestino Delgado/trasplante , Rechazo de Injerto/prevención & control , Enfermedad Injerto contra Huésped/etiología , Humanos , Inmunosupresores/uso terapéutico , Trastornos Linfoproliferativos/etiología , Complicaciones PosoperatoriasRESUMEN
This paper provides an overview of the nutritional management and care of people living with motor neurone disease (MND) in a specialist nutrition clinic. A specialist pathway of care has been developed to enable people living with MND to undergo a percutaneous endoscopic gastrostomy (PEG) procedure in a safe way; the pathway incorporates attendance at a dedicated nutrition clinic, a stratification tool to identify patients with a high periprocedural risk and a PEG insertion team with significant experience in the MND population. Since this pathway has been in place, gastrostomies have been successfully placed in patients with a forced vital capacity (FVC) of less than 50%; previously, this would not have been possible.
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Atención Ambulatoria/organización & administración , Gastrostomía/métodos , Enfermedad de la Neurona Motora/terapia , Apoyo Nutricional/métodos , Humanos , Enfermedad de la Neurona Motora/fisiopatología , Aceptación de la Atención de Salud , Grupo de Atención al Paciente , Capacidad VitalRESUMEN
INTRODUCTION: Variation in access to parenteral nutrition (PN) in patients with intestinal failure secondary to malignant bowel obstruction (MBO) exists due to differing practice, beliefs and resource access. We aimed to examine differences in nutritional care pathways and outcomes, by referral to nutrition team for PN in patients with MBO. METHODS: This is a retrospective cohort study of MBO adults admitted to eight UK hospitals within a year and 1 year follow-up. Demographic, nutritional and medical data were analysed by comparing patients referred (R) or not referred (NR) for PN. Differences between groups were tested by Kruskal-Wallis, Chi-Squared tests and multi-level regression and survival using Cox regression. RESULTS: 232 patients with 347 MBO admissions [median 66yr, (IQR: 55-74yrs), 67 % female], 79/232 patients were referred for PN (R group). Underlying primary malignancies of gynaecological and gastrointestinal origin predominated (71 %) and 78 % with metastases. Those in the NR group were found to be older, weigh more on admission, and more likely to be treated conservatively compared to those in the R group. For 123 (35 %) admissions, patients were referred to a nutrition team, and for 204 (59 %) admissions, patients were reviewed by a dietician. Multi-disciplinary team discussion and dietetic contact were more likely to occur in the R group-123/347 admissions (R vs NR group: 27 % vs. 7 %, P = 0.001; 95 % vs 39 %, P < 0.0001). Median admission weight loss was 8 % (IQR: 0 to 14). 43/123 R group admissions received inpatient PN only, with 32 patients discharged or already established on home parenteral nutrition. Overall survival was 150 days (126-232) with no difference between R/NR groups. CONCLUSION: In this multi-centre study evaluating nutritional care management of patients with malignant bowel obstruction, only 1 in 3 admissions resulted in a referral to the nutrition team for PN, and just over half were reviewed by a dietician. Further prospective research is required to evaluate possible consequences of these differential care pathways on clinical outcomes and quality of life.
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Obstrucción Intestinal , Neoplasias , Nutrición Parenteral en el Domicilio , Femenino , Humanos , Masculino , Vías Clínicas , Obstrucción Intestinal/etiología , Obstrucción Intestinal/terapia , Neoplasias/complicaciones , Neoplasias/terapia , Calidad de Vida , Estudios Retrospectivos , Persona de Mediana Edad , AncianoRESUMEN
Introduction: Pregnancy in patients with chronic intestinal failure (CIF) is a relatively rare occurrence but is an important contemporary topic given both the increasing use of home parenteral nutrition (HPN) and the demographics of patients with CIF. Method: An opinion-based survey was produced in a multidisciplinary manner, which was then distributed internationally, via the European Society for Clinical Nutrition and Metabolism network, using a web-based survey tool for healthcare professionals with a specialist interest in the management of CIF. Results: Seventy specialists from 11 countries completed the survey. Fifty-four per cent of the respondents reported some experience of managing pregnancy in patients with CIF. However, 60% stated that they did not feel that it was their role to discuss the topic of pregnancy with their patients, with fewer than 10% stating that they routinely did so. Respondents felt that an individualised approach was required when considering alterations to parenteral support prior to conception, during pregnancy and in the postnatal period. Most respondents also felt there was no increased risk of catheter-related blood stream infections, while catheter-related thrombosis was deemed to be the most significant HPN-related complication for pregnant women. Conclusion: This study reports a variable experience, knowledge and confidence of healthcare professionals when considering pregnancy in patients with CIF. The risk of HPN-related complication was felt to be greater during pregnancy, with an individualised approach being the preferred route for most aspects of care. The findings support the need for an international registry and subsequent consensus guidelines for the management of pregnancy in CIF.
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BACKGROUND: This survey of centers caring for patients receiving home parenteral nutrition (HPN) was conducted to assess the impact of the coronavirus disease 2019 (COVID-19) crisis on the management of these patients regarding provision of care, monitoring, regular follow-up, and any changes to service infrastructure. METHODS: A survey was devised and publically published on the Research Electronic Data Capture database management system, with individual centers responding to a public link. RESULTS: A total of 78 adult and pediatric centers worldwide contributed to the survey, representing ≥3500 patients' experiences. Centers reported infrastructure maintenance for Parenteral Nutrition (PN) bag deliveries to patients (60, 76.92%) or delivery of ancillary items (57, 73.08%), home delivery and HPN administration (65, 83.33%), and home care nurse shortages (25, 32.05%). Routine follow-up of HPN patients changed to either all telemed or mixed with emergency clinic review (70, 89.74%). In 26 centers (33.33%), HPN for newly discharged patients with benign conditions was reduced or stopped. Based on clinical history, the centers reported psychological distress for patients (52, 66.67%), with anxiety, worry, concern, and apprehension reported most frequently (37 of 52, 71.15%) but also fear (10 of 52, 19.23%), depression (5 of 52, 9.62%), and issues related to isolation/confinement (12 of 52, 23.08%). CONCLUSIONS: The COVID-19 pandemic was reported by clinicians to have had a far-reaching adverse impact on patients receiving HPN, especially their safety in terms of provision of personal protective equipment, PN bags, available nursing staff, and psychological well-being. Healthcare systems responded to the challenge and presented new ways of working.
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COVID-19/prevención & control , Enfermedades Intestinales/terapia , Nutrición Parenteral en el Domicilio/efectos adversos , Médicos/psicología , Humanos , Enfermedades Intestinales/epidemiología , Pandemias , Atención al Paciente , SARS-CoV-2RESUMEN
Tissue-resident memory T (TRM) cells provide key adaptive immune responses in infection, cancer, and autoimmunity. However, transcriptional heterogeneity of human intestinal TRM cells remains undefined. Here, we investigate transcriptional and functional heterogeneity of human TRM cells through study of donor-derived TRM cells from intestinal transplant recipients. Single-cell transcriptional profiling identifies two transcriptional states of CD8+ TRM cells, delineated by ITGAE and ITGB2 expression. We define a transcriptional signature discriminating these populations, including differential expression of cytotoxicity- and residency-associated genes. Flow cytometry of recipient-derived cells infiltrating the graft, and lymphocytes from healthy gut, confirm these CD8+ TRM phenotypes. CD8+ CD69+CD103+ TRM cells produce interleukin-2 (IL-2) and demonstrate greater polyfunctional cytokine production, whereas ß2-integrin+CD69+CD103- TRM cells have higher granzyme expression. Analysis of intestinal CD4+ T cells identifies several parallels, including a ß2-integrin+ population. Together, these results describe the transcriptional, phenotypic, and functional heterogeneity of human intestinal CD4+ and CD8+ TRM cells.
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Intestinos/fisiología , Células T de Memoria/metabolismo , HumanosRESUMEN
INTRODUCTION: Intestinal failure (IF) and intestinal transplant (ITx) are associated with poor quality of life (QoL). Disease-specific assessment of QoL for IF and ITx is challenging, owing to the different problems encountered. We have sought to compare QoL pre-ITx with post-ITx and have compared generic QoL with a stable IF population. METHODS: Two prospectively maintained databases of patients referred for and undergoing ITx and a chronic (Type 2 & 3) IF cohort were interrogated. QoL instruments used were generic (EQ-5D-5L and SF-36) and disease-specific (HPN-QOL and ITx-QOL). Analysis used Student's t-test and one-way ANOVA with Bonferroni correction for multiple comparisons. Data were collected pre- and post-ITx at 3, 6, 12-months and yearly thereafter. RESULTS: All QoL instruments improved following ITx to levels comparable with a cohort of stable IF patients not requiring ITx. Both the visual analogue score component (EQ-5D-5L) and the effect of underlying illness on QoL (HPN-QOL/ITx-QOL) were higher following ITx than either pre-ITx or when compared with the IF cohort. Effects on general health, ability to eat and drink, to holiday and travel were improved as early as 3 months post-ITx. Other components did not before 6-12 months following ITx, but were maintained to at least 24 months. Patient personal financial pressures are greater following ITx, even in a publicly funded healthcare system. CONCLUSION: ITx has beneficial effects on QoL compared to those assessed for or awaiting ITx. QoL following ITx is similar to patients with IF not requiring ITx. A QoL instrument that covers the journey of patients from IF through ITx would assist longitudinal analysis of the value and timing of ITx at an individual level.
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Enfermedades Intestinales/cirugía , Intestinos/trasplante , Trasplante de Órganos , Nutrición Parenteral en el Domicilio , Calidad de Vida , Encuestas y Cuestionarios , Adulto , Anciano , Anciano de 80 o más Años , Costo de Enfermedad , Bases de Datos Factuales , Femenino , Humanos , Enfermedades Intestinales/diagnóstico , Enfermedades Intestinales/fisiopatología , Enfermedades Intestinales/psicología , Masculino , Persona de Mediana Edad , Trasplante de Órganos/efectos adversos , Nutrición Parenteral en el Domicilio/efectos adversos , Valor Predictivo de las Pruebas , Estudios Retrospectivos , Resultado del Tratamiento , Adulto JovenRESUMEN
BACKGROUND & AIMS: Home parenteral nutrition (HPN) provides life sustaining treatment for people with chronic intestinal failure. Individuals may require HPN for months or years and are dependent on regular intravenous infusions, usually 12-14 h overnight between 1 and 7 days each week. This regime can have adverse impact on the life of people dependent on the treatment. The aim of this study was to establish mean values for the Parenteral Nutrition Impact Questionnaire (PNIQ) and to determine the effect of disease, frequency of infusions per week and patient characteristics on quality of life of patients fed HPN. METHOD: The PNIQ was distributed to patients across nine UK HPN clinics. Data were analysed using linear regression, with PNIQ score as the dependent variable and potential confounders as independent variables. Unadjusted and adjusted models are presented. Higher PNIQ scores reflect poorer quality of life. RESULTS: Completed questionnaires were received from 466 people dependent on HPN. Mean PNIQ score was 11.04 (SD 5.79). A higher PNIQ score (effect size 0.52, CI 0.184 to 0.853) was recorded in those dependent on a higher frequency of HPN infusions per week. Respondents with cancer had a similar mean PNIQ score to those with inflammatory bowel disease (mean 10.82, SD 6.00 versus 11.04, SD 5.91). Those with surgical complications reported a poorer QoL (effect size 3.03, CI 0.642 to 5.418) and those with severe gastro-intestinal dysmotility reported a better QoL (effect size -3.03, CI -5.593 to -0.468), compared to other disease states. CONCLUSIONS: This large cohort study of quality of life in chronic intestinal failure demonstrates that HPN impacts individuals differently depending on their underlying disease. Furthermore, since the number of HPN infusions required per week is inversely related to an individual's needs-based quality of life, therapies that reduce PN burden should lead to an improvement in QoL.
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Enfermedades Intestinales/terapia , Evaluación de Necesidades/estadística & datos numéricos , Nutrición Parenteral en el Domicilio/estadística & datos numéricos , Calidad de Vida , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Enfermedad Crónica , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios , Reino Unido , Adulto JovenRESUMEN
Intestinal failure (IF) is the inability of the gut to absorb necessary water, macronutrients (carbohydrate, protein, and fat), micronutrients, and electrolytes sufficient to sustain life and requiring intravenous supplementation or replacement. Acute IF (types 1 and 2) is the initial phase of the illness and may last for weeks to a few months, and chronic IF (type 3) from months to years. The challenge of caring for patients with IF is not merely the management of the underlying condition leading to IF or the correct provision of appropriate nutrition or both but also the prevention of complications, whether thromboembolic phenomenon (for example, venous occlusion), central venous catheter-related bloodstream infection, IF-associated liver disease, or metabolic bone disease. This review looks at recent questions regarding chronic IF (type 3), its diagnosis and management, the role of the multidisciplinary team, and novel therapies, including hormonal treatment for short bowel syndrome but also surgical options for intestinal lengthening and intestinal transplant.
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PURPOSE: Blood pressure (BP) is commonly assessed by brachial oscillometry in clinical practice, whereas in physiological studies, finger plethysmography is often employed. This study assessed the limits of agreement between BP metrics obtained from each device. METHODS: In 96 participants, we simultaneously recorded BP by brachial oscillometry (BP+; Uscom, Sydney, NSW, Australia) and finger plethysmography (Finometer MIDI, MLE1054-V; Finapres Medical Systems B.V., Amsterdam, the Netherlands). Agreement between the two devices was assessed by correlation and Bland-Altman analysis. We assessed average BP differences between the two devices using the criteria of the Association for the Advancement of Medical Instruments (AAMI), which require systolic and diastolic BP differences to be within ≤5 ± 8 (mean ± SD). RESULTS: Bland-Altman analysis showed wide limits of agreement (±~17 mmHg or greater) between finger-derived brachial and oscillometric BP. Both systolic and mean BP exhibited positive proportional biases (both P<0·05). Systolic BP differed significantly between devices (7·4 ± 17·7 mmHg, P<0·001), which did not meet the AAMI criteria. No mean bias was observed for diastolic BP (-1·5 ± 8·6 mmHg, P = 0·097), and the SD of ±8·6 mmHg is potentially acceptable given the finger signal may be expected to capture biological variability in BP. Mean BP showed poor concordance (3·7 ± 10·5 mmHg, P<0·001). CONCLUSIONS: These findings indicate that systolic and mean BP measurements made by brachial oscillometry do not agree with those from finger plethysmography. In contrast, diastolic BP values show acceptable agreement.
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Presión Arterial , Determinación de la Presión Sanguínea/métodos , Arteria Braquial/fisiopatología , Dedos/irrigación sanguínea , Ataque Isquémico Transitorio/diagnóstico , Pletismografía , Accidente Cerebrovascular/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Femenino , Humanos , Ataque Isquémico Transitorio/fisiopatología , Masculino , Persona de Mediana Edad , Oscilometría , Valor Predictivo de las Pruebas , Reproducibilidad de los Resultados , Accidente Cerebrovascular/fisiopatología , Adulto JovenRESUMEN
It is known that high blood pressure variability (BPV) in acute ischemic stroke is associated with adverse outcomes, yet there are no therapeutic treatments to reduce BPV. Studies have found increasing nitric oxide (NO) bioavailability improves neurological function following stroke, but whether dietary nitrate supplementation could reduce BPV remains unknown. We investigated the effects of dietary nitrate supplementation on heart rate (HR), blood pressure (BP), and beat-to-beat BPV using wireless telemetry in a rat model of distal middle cerebral artery occlusion. Blood pressure variability was characterized by spectral power analysis in the low frequency (LF; 0.2-0.6 Hz) range prestroke and during the 7 days poststroke in a control group ( n = 8) and a treatment group ( n = 8, 183 mg/l sodium nitrate in drinking water). Dietary nitrate supplementation moderately reduced systolic BPV in the LF range by ~11% compared with the control group ( P = 0.03), while resting BP and HR were not different between the two groups ( P = 0.28 and 0.33, respectively). Despite systolic BPV being reduced with dietary nitrate, we found no difference in infarct volumes between the treatment and the control groups (1.59 vs. 1.62 mm3, P = 0.86). These findings indicate that dietary nitrate supplementation is effective in reducing systolic BPV following stroke without affecting absolute BP. In light of mounting evidence linking increased BPV with poor stroke patient outcome, our data support the role of dietary nitrate as an adjunct treatment following ischemic stroke. NEW & NOTEWORTHY Using a rat model of stroke, we found that dietary nitrate supplementation reduced low frequency blood pressure fluctuations following stroke without affecting absolute blood pressure values. Since blood pressure fluctuations are associated with poor clinical outcome in stroke patients, our findings indicate that dietary nitrate could be an effective strategy for reducing blood pressure fluctuations, which could help reduce stroke severity and improve patient recovery.
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Presión Sanguínea/efectos de los fármacos , Suplementos Dietéticos , Infarto de la Arteria Cerebral Media/tratamiento farmacológico , Nitratos/uso terapéutico , Animales , Isquemia Encefálica/tratamiento farmacológico , Isquemia Encefálica/fisiopatología , Frecuencia Cardíaca/efectos de los fármacos , Infarto de la Arteria Cerebral Media/patología , Infarto de la Arteria Cerebral Media/fisiopatología , Masculino , Óxido Nítrico/metabolismo , Ratas , Ratas Sprague-Dawley , Accidente Cerebrovascular/tratamiento farmacológico , Accidente Cerebrovascular/fisiopatologíaRESUMEN
OBJECTIVES: Parenteral nutrition (PN) costs approximately £80 per day per bag. Unpredictable changes in patients' clinical condition, venous access loss or reasons related to the processes involved in administering PN can lead to PN wastage. Cost efficiencies are imperative to optimise limited resource utilisation in all current healthcare economies. We undertook a quality improvement (QI) project to reduce PN wastage in an adult acute hospital setting. The project SMART's (specific, measurable, achievable, realistic, time-based) objective was reducing in-patient PN wastage by 10% in 9 months using QI methodology on a national intestinal failure unit (IFU). METHOD: Wastage reasons were evaluated through pareto charts to target waste reduction using 'Plan, Do, Study, Act' (PDSA) cycles. Variation was mapped using c-charts. RESULTS: 12-week baseline wastage data predicted 1000 bags wasted per annum (p.a.). PDSA cycles actioned included: regular enhanced clinical team awareness of wastage; unused PN bags redistributed within expiry date; stock bag rotation; critical path analysis of PN bag journey; enhanced discharge planning/coordination; reorganisation of fridge PN storage according to weekday; changing ordering frequency and bag type (from tailored to standard) to increase flexibility around discharge date and PN weaning. Implementation of PDSA cycles led to a 34% reduction in PN wastage in 9 months. CONCLUSION: In a high-use IFU, PN wastage is common and costly. Using a QI approach with concurrent PDSA cycles and a motivated multidisciplinary team, high levels of wastage reduction are possible with associated significant cost savings and from this study a predicted cost saving of approximately £30 000 p.a.
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Recent advances in the field of intestinal transplantation have been mitigated by the incidence of allograft rejection. In such events, early identification and appropriate timing of antirejection therapy are crucial in retaining graft function. We present the case of a patient who suffered severe postintestinal transplantation allograft enteropathy, primarily characterized by extensive mucosal ulcerations, and was refractory to all conventional therapy. This progressed as chronic rejection; however crucially this was not definitively diagnosed until allograft function had irreversibly diminished. We argue that the difficulties encountered in this case can be attributed to the inability of our current array of investigative studies and diagnostic guidelines to provide adequate clinical guidance. This case illustrates the importance of developing reliable and specific markers for guiding the diagnosis of rejection and the use of antirejection therapeutics in this rapidly evolving field of transplant surgery.
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BACKGROUND: The safety of percutaneous endoscopic gastrostomy (PEG) insertion in amyotrophic lateral sclerosis (ALS) patients with significant respiratory compromise has been questioned. OBJECTIVES: To review the characteristics of an ALS clinic patient cohort undergoing PEG, and the introduction of a risk stratification tool with procedural adaptations for higher-risk individuals. METHODS: Patients undergoing PEG insertion were analysed (n = 107). Cases stratified as higher-risk underwent insertion in a semi-recumbent position, minimising sedation, with the option of nasal non-invasive ventilation. RESULTS: All underwent successful PEG. One-third had pre-procedure FVC ≤50% (mean, 64 ± 22%). Of those who underwent PEG insertion after introduction of risk stratification (n = 58), 39 (67%) met criteria for being higher risk, 16 (41%) of whom had FVC ≤50% (p = 0.005). High-risk patients received lower sedative doses vs. the low-risk group (midazolam 2.1 ± 1.1 vs.2.8 ± 0.95mg, p = 0.021; fentanyl 42 ± 16 vs. 60 ± 21µg, p = 0.015). Four deaths occurred within one month of insertion (attributable to the natural disease course). CONCLUSIONS: Risk stratification identified a greater number of patients with evidence of respiratory compromise than using the sole criterion of FVC ≤50%. A modified PEG procedure enabled safe insertion despite respiratory compromise, in those who might not have tolerated attempted insertion by alternative means such as radiologically-inserted gastrostomy.
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Esclerosis Amiotrófica Lateral/epidemiología , Esclerosis Amiotrófica Lateral/cirugía , Endoscopía Gastrointestinal/métodos , Gastrostomía/métodos , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Progresión de la Enfermedad , Nutrición Enteral , Femenino , Humanos , Hipnóticos y Sedantes/administración & dosificación , Hipnóticos y Sedantes/uso terapéutico , Masculino , Apoyo Nutricional , Pruebas de Función Respiratoria , Estudios Retrospectivos , Medición de Riesgo , Capacidad VitalRESUMEN
BACKGROUND: Functional cerebrovascular regulatory mechanisms are important for maintaining constant cerebral blood flow and oxygen supply in heathy individuals and are altered in heart failure. We aim to examine whether pulmonary arterial hypertension (PAH) is associated with abnormal cerebrovascular regulation and lower cerebral oxygenation and their physiological and clinical consequences. METHODS AND RESULTS: Resting mean flow velocity in the middle cerebral artery mean flow velocity in the middle cerebral artery (MCAvmean); transcranial Doppler), cerebral pressure-flow relationship (assessed at rest and during squat-stand maneuvers; analyzed using transfer function analysis), cerebrovascular reactivity to CO2, and central chemoreflex were assessed in 11 patients with PAH and 11 matched healthy controls. Both groups also completed an incremental ramp exercise protocol until exhaustion, during which MCAvmean, mean arterial pressure, cardiac output (photoplethysmography), end-tidal partial pressure of CO2, and cerebral oxygenation (near-infrared spectroscopy) were measured. Patients were characterized by a significant decrease in resting MCAvmean (P<0.01) and higher transfer function gain at rest and during squat-stand maneuvers (both P<0.05). Cerebrovascular reactivity to CO2 was reduced (P=0.03), whereas central chemoreceptor sensitivity was increased in PAH (P<0.01), the latter correlating with increased resting ventilation (R2=0.47; P<0.05) and the exercise ventilation/CO2 production slope (VËE/VËCO2 slope; R2=0.62; P<0.05) during exercise for patients. Exercise-induced increases in MCAvmean were limited in PAH (P<0.05). Reduced MCAvmean contributed to impaired cerebral oxygen delivery and oxygenation (both P<0.05), the latter correlating with exercise capacity in patients with PAH (R2=0.52; P=0.01). CONCLUSIONS: These findings provide comprehensive evidence for physiologically and clinically relevant impairments in cerebral hemodynamic regulation and oxygenation in PAH.