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Prenatal cortisol exposure impairs adrenal function but not glucose metabolism in adult sheep. J Endocrinol 2024; 260:e230326. [PMID: 38109257 PMCID: PMC10895281 DOI: 10.1530/joe-23-0326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/18/2023] [Indexed: 12/20/2023]
Abstract
Adverse environmental conditions before birth are known to programme adult metabolic and endocrine phenotypes in several species. However, whether increments in fetal cortisol concentrations of the magnitude commonly seen in these conditions can cause developmental programming remains unknown. Thus, this study investigated the outcome of physiological increases in fetal cortisol concentrations on glucose-insulin dynamics and pituitary-adrenal function in adult sheep. Compared with saline treatment, intravenous fetal cortisol infusion for 5 days in late gestation did not affect birthweight but increased lamb body weight at 1-2 weeks after birth. Adult glucose dynamics, insulin sensitivity and insulin secretion were unaffected by prenatal cortisol overexposure, assessed by glucose tolerance tests, hyperinsulinaemic-euglycaemic clamps and acute insulin administration. In contrast, prenatal cortisol infusion induced adrenal hypo-responsiveness in adulthood with significantly reduced cortisol responses to insulin-induced hypoglycaemia and exogenous adrenocorticotropic hormone (ACTH) administration relative to saline treatment. The area of adrenal cortex expressed as a percentage of the total cross-sectional area of the adult adrenal gland was also lower after prenatal cortisol than saline infusion. In adulthood, basal circulating ACTH but not cortisol concentrations were significantly higher in the cortisol than saline-treated group. The results show that cortisol overexposure before birth programmes pituitary-adrenal development with consequences for adult stress responses. Physiological variations in cortisol concentrations before birth may, therefore, have an important role in determining adult phenotypical diversity and adaptability to environmental challenges.
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GDF15 linked to maternal risk of nausea and vomiting during pregnancy. Nature 2024; 625:760-767. [PMID: 38092039 PMCID: PMC10808057 DOI: 10.1038/s41586-023-06921-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 11/30/2023] [Indexed: 01/19/2024]
Abstract
GDF15, a hormone acting on the brainstem, has been implicated in the nausea and vomiting of pregnancy, including its most severe form, hyperemesis gravidarum (HG), but a full mechanistic understanding is lacking1-4. Here we report that fetal production of GDF15 and maternal sensitivity to it both contribute substantially to the risk of HG. We confirmed that higher GDF15 levels in maternal blood are associated with vomiting in pregnancy and HG. Using mass spectrometry to detect a naturally labelled GDF15 variant, we demonstrate that the vast majority of GDF15 in the maternal plasma is derived from the feto-placental unit. By studying carriers of rare and common genetic variants, we found that low levels of GDF15 in the non-pregnant state increase the risk of developing HG. Conversely, women with β-thalassaemia, a condition in which GDF15 levels are chronically high5, report very low levels of nausea and vomiting of pregnancy. In mice, the acute food intake response to a bolus of GDF15 is influenced bi-directionally by prior levels of circulating GDF15 in a manner suggesting that this system is susceptible to desensitization. Our findings support a putative causal role for fetally derived GDF15 in the nausea and vomiting of human pregnancy, with maternal sensitivity, at least partly determined by prepregnancy exposure to the hormone, being a major influence on its severity. They also suggest mechanism-based approaches to the treatment and prevention of HG.
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Fetally-encoded GDF15 and maternal GDF15 sensitivity are major determinants of nausea and vomiting in human pregnancy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.02.542661. [PMID: 37398065 PMCID: PMC10312505 DOI: 10.1101/2023.06.02.542661] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Human pregnancy is frequently accompanied by nausea and vomiting that may become severe and life-threatening, as in hyperemesis gravidarum (HG), the cause of which is unknown. Growth Differentiation Factor-15 (GDF15), a hormone known to act on the hindbrain to cause emesis, is highly expressed in the placenta and its levels in maternal blood rise rapidly in pregnancy. Variants in the maternal GDF15 gene are associated with HG. Here we report that fetal production of GDF15, and maternal sensitivity to it, both contribute substantially to the risk of HG. We found that the great majority of GDF15 in maternal circulation is derived from the feto-placental unit and that higher GDF15 levels in maternal blood are associated with vomiting and are further elevated in patients with HG. Conversely, we found that lower levels of GDF15 in the non-pregnant state predispose women to HG. A rare C211G variant in GDF15 which strongly predisposes mothers to HG, particularly when the fetus is wild-type, was found to markedly impair cellular secretion of GDF15 and associate with low circulating levels of GDF15 in the non-pregnant state. Consistent with this, two common GDF15 haplotypes which predispose to HG were associated with lower circulating levels outside pregnancy. The administration of a long-acting form of GDF15 to wild-type mice markedly reduced subsequent responses to an acute dose, establishing that desensitisation is a feature of this system. GDF15 levels are known to be highly and chronically elevated in patients with beta thalassemia. In women with this disorder, reports of symptoms of nausea or vomiting in pregnancy were strikingly diminished. Our findings support a causal role for fetal derived GDF15 in the nausea and vomiting of human pregnancy, with maternal sensitivity, at least partly determined by pre-pregnancy exposure to GDF15, being a major influence on its severity. They also suggest mechanism-based approaches to the treatment and prevention of HG.
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Age and the anaesthetist: considerations for the individual anaesthetist and workforce planning: Guidelines about the ageing anaesthetic workforce from the Association of Anaesthetists: Guidelines for the ageing anaesthetic workforce from the Association of Anaesthetists. Anaesthesia 2022; 77:1259-1267. [PMID: 36173018 DOI: 10.1111/anae.15825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2022] [Indexed: 11/27/2022]
Abstract
There is clear evidence of a growing workforce gap and this is compounded by demographic data that show the current workforce is ageing. Within the current workforce, more doctors are taking voluntary early retirement and the loss of these experienced clinicians from departments can have wide-ranging effects. Older doctors are at risk of age-related health problems (e.g. sight, musculoskeletal, menopause) and are more susceptible to the effects of fatigue, which may increase the risk of error and or complaint. The purpose of this working party and advocacy campaign was to address concerns over the number of consultants retiring at the earliest opportunity and whether a different approach could extend the working career of consultant anaesthetists and SAS doctors. This could be viewed as 'pacing your career'. The earlier this is considered in a clinician's career the greater the potential mitigation on individuals.
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Annual water residence time effects on thermal structure: A potential lake restoration measure? JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 314:115082. [PMID: 35468434 DOI: 10.1016/j.jenvman.2022.115082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Innovative methods to combat internal loading issues in eutrophic lakes are urgently needed to speed recovery and restore systems within legislative deadlines. In stratifying lakes, internal phosphorus loading is particularly problematic during the summer stratified period when anoxia persists in the hypolimnion, promoting phosphorus release from the sediment. A novel method to inhibit stratification by reducing residence times is proposed as a way of controlling the length of the hypolimnetic anoxic period, thus reducing the loading of nutrients from the sediments into the water column. However, residence time effects on stratification length in natural lakes are not well understood. We used a systematic modelling approach to investigate the viability of changes to annual water residence time in affecting lake stratification and thermal dynamics in Elterwater, a small stratifying eutrophic lake in the northwest of England. We found that reducing annual water residence times shortened and weakened summer stratification. Based on finer-scale dynamics of lake heat fluxes and water column stability we propose seasonal or sub-seasonal management of water residence time is needed for the method to be most effective at reducing stratification as a means of controlling internal nutrient loading.
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Can reductions in water residence time be used to disrupt seasonal stratification and control internal loading in a eutrophic monomictic lake? JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 304:114169. [PMID: 34864421 DOI: 10.1016/j.jenvman.2021.114169] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
Anthropogenic eutrophication caused by excess loading of nutrients, especially phosphorus (P), from catchments is a major cause of lake water quality degradation. The release of P from bed sediments to the water column, termed internal loading, can exceed catchment P load in eutrophic lakes, especially those that stratify during warm summer periods. Managing internal P loading is challenging, and although a range of approaches have been implemented, long-term success is often limited, requiring lake-specific solutions. Here, we assess the manipulation of lake residence time to inhibit internal loading in Elterwater, a shallow stratifying lake in the English Lake District, UK. Since 2016, additional inflowing water has been diverted into the inner basin of Elterwater to reduce its water residence time, with the intention of limiting the length of the stratified period and reducing internal loading. Combining eight years of field data in a Before-After-Control-Impact study with process-based hydrodynamic modelling enabled the quantification of the residence time intervention effects on stratification length, water column stability, and concentrations of chlorophyll a and P. Annual water residence time was reduced during the study period by around 40% (4.9 days). Despite this change, the lake continued to stratify and developed hypolimnetic anoxia. As a result, there was little significant change in phosphorus (as total or soluble reactive phosphorus) or chlorophyll a concentrations. Summer stratification length was 2 days shorter and 7% less stable with the intervention. Our results suggest that the change to water residence time in Elterwater was insufficient to induce large enough physical changes to improve water quality. However, the minor physical changes suggest the management measure had some impact and that larger changes in water residence time may have the potential to induce reductions in internal loading. Future assessments of management requirements should combine multi-year observations and physical lake modelling to provide improved understanding of the intervention effect size required to alter the physical structure of the lake, leading to increased hypolimnetic oxygen and reduced potential for internal loading.
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Guidelines for the management of glucocorticoids during the peri-operative period for patients with adrenal insufficiency: Guidelines from the Association of Anaesthetists, the Royal College of Physicians and the Society for Endocrinology UK. Anaesthesia 2020; 75:654-663. [PMID: 32017012 DOI: 10.1111/anae.14963] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2019] [Indexed: 12/17/2022]
Abstract
These guidelines aim to ensure that patients with adrenal insufficiency are identified and adequately supplemented with glucocorticoids during the peri-operative period. There are two major categories of adrenal insufficiency. Primary adrenal insufficiency is due to diseases of the adrenal gland (failure of the hormone-producing gland), and secondary adrenal insufficiency is due to deficient adrenocorticotropin hormone secretion by the pituitary gland, or deficient corticotropin-releasing hormone secretion by the hypothalamus (failure of the regulatory centres). Patients taking physiological replacement doses of corticosteroids for either primary or secondary adrenal insufficiency are at significant risk of adrenal crisis and must be given stress doses of hydrocortisone during the peri-operative period. Many more patients other than those with adrenal and hypothalamic-pituitary causes of adrenal failure are receiving glucocorticoids as treatment for other medical conditions. Daily doses of prednisolone of 5 mg or greater in adults and 10-15 mg.m-2 hydrocortisone equivalent or greater in children may result in hypothalamo-pituitary-adrenal axis suppression if administered for 1 month or more by oral, inhaled, intranasal, intra-articular or topical routes; this chronic administration of glucocorticoids is the most common cause of secondary adrenal suppression, sometimes referred to as tertiary adrenal insufficiency. A pragmatic approach to adrenal replacement during major stress is required; considering the evidence available, blanket recommendations would not be appropriate, and it is essential for the clinician to remember that adrenal replacement dosing following surgical stress or illness is in addition to usual steroid treatment. Patients with previously undiagnosed adrenal insufficiency sometimes present for the first time following the stress of surgery. Anaesthetists must be familiar with the symptoms and signs of acute adrenal insufficiency so that inadequate supplementation or undiagnosed adrenal insufficiency can be detected and treated promptly. Delays may prove fatal.
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P104 TOTAL NASAL SYMPTOM SCORE IMPROVEMENT WITH BENRALIZUMAB FOR PATIENTS WITH SEVERE, EOSINOPHILIC ASTHMA. Ann Allergy Asthma Immunol 2019. [DOI: 10.1016/j.anai.2019.08.246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Longitudinal Modeling of Prebronchodilator FEV1 Response to Benralizumab for Patients with Severe Asthma. Pneumologie 2018. [DOI: 10.1055/s-0037-1619155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Relationship between Benralizumab Exposure and Asthma Exacerbation Rate for Patients with Severe Asthma. Pneumologie 2018. [DOI: 10.1055/s-0037-1619156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Modélisation longitudinale de la réponse sur le VEMS pre-bronchodilateur (preBD) de benralizumab chez des patients ayant un asthme sévère. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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AAGBI: Consent for anaesthesia 2017: Association of Anaesthetists of Great Britain and Ireland. Anaesthesia 2017; 72:93-105. [PMID: 27988961 PMCID: PMC6680217 DOI: 10.1111/anae.13762] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2016] [Indexed: 11/24/2022]
Abstract
Previous guidelines on consent for anaesthesia were issued by the Association of Anaesthetists of Great Britain and Ireland in 1999 and revised in 2006. The following guidelines have been produced in response to the changing ethical and legal background against which anaesthetists, and also intensivists and pain specialists, currently work, while retaining the key principles of respect for patients' autonomy and the need to provide adequate information. The main points of difference between the relevant legal frameworks in England and Wales and Scotland, Northern Ireland and the Republic of Ireland are also highlighted.
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Abstract
BACKGROUND Periodic health surveillance (HS) of workers can identify early cases of occupational asthma. Information about its uptake and its content in the UK is lacking. AIMS To identify the overall levels of uptake and quality of HS for occupational asthma within three high-risk industry sectors in the UK. METHODS A telephone survey of employers, and their occupational health (OH) professionals, carried out in three sectors with exposures potentially capable of causing occupational asthma (bakeries, wood working and motor vehicle repair). RESULTS A total of 457 organizations participated (31% response rate). About 77% employed <10 people, 17% between 10 and 50 and 6% >50. Risk assessments were common (67%) and 14% carried out some form of HS for occupational asthma, rising to 19% if only organizations reporting asthma hazards and risks were considered. HS was carried out both by in-house (31%) and external providers (69%). Organizational policies were often used to define HS approaches (80%), but infrequently shared with the OH provider. OH providers described considerable variation in practice. Record keeping was universal, but worker-held records were not reported. HS tools were generally developed in-house. Lung function was commonly measured, but only limited interpretation evident. Referral of workers to local specialist respiratory services was variable. CONCLUSIONS This study provided new insights into the real world of HS for occupational asthma. We consider that future work could and should define simpler, more practical and evidence-based approaches to HS to ensure maximal consistency and use of high-quality approaches.
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P60 Uptake and Quality of Health Surveillance for Occupational Asthma in the UK. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Peri-operative management of the surgical patient with diabetes 2015: Association of Anaesthetists of Great Britain and Ireland. Anaesthesia 2015; 70:1427-40. [PMID: 26417892 PMCID: PMC5054917 DOI: 10.1111/anae.13233] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2015] [Indexed: 02/06/2023]
Abstract
Diabetes affects 10-15% of the surgical population and patients with diabetes undergoing surgery have greater complication rates, mortality rates and length of hospital stay. Modern management of the surgical patient with diabetes focuses on: thorough pre-operative assessment and optimisation of their diabetes (as defined by a HbA1c < 69 mmol.mol(-1) ); deciding if the patient can be managed by simple manipulation of pre-existing treatment during a short starvation period (maximum of one missed meal) rather than use of a variable-rate intravenous insulin infusion; and safe use of the latter when it is the only option, for example in emergency patients, patients expected not to return to a normal diet immediately postoperatively, and patients with poorly controlled diabetes. In addition, it is imperative that communication amongst healthcare professionals and between them and the patient is accurate and well informed at all times. Most patients with diabetes have many years of experience of managing their own care. The purpose of this guideline is to provide detailed guidance on the peri-operative management of the surgical patient with diabetes that is specific to anaesthetists and to ensure that all current national guidance is concordant.
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The proinflammatory RAGE/NF-κB pathway is involved in neuronal damage and reactive gliosis in a model of sleep apnea by intermittent hypoxia. PLoS One 2014; 9:e107901. [PMID: 25265561 PMCID: PMC4180086 DOI: 10.1371/journal.pone.0107901] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 08/17/2014] [Indexed: 11/18/2022] Open
Abstract
Sleep apnea (SA) causes long-lasting changes in neuronal circuitry, which persist even in patients successfully treated for the acute effects of the disease. Evidence obtained from the intermittent hypoxia (IH) experimental model of SA has shown neuronal death, impairment in learning and memory and reactive gliosis that may account for cognitive and structural alterations observed in human patients. However, little is known about the mechanism controlling these deleterious effects that may be useful as therapeutic targets in SA. The Receptor for Advanced Glycation End products (RAGE) and its downstream effector Nuclear Factor Kappa B (NF-κB) have been related to neuronal death and astroglial conversion to the pro-inflammatory neurodegenerative phenotype. RAGE expression and its ligand S100B were shown to be increased in experimental models of SA. We here used dissociated mixed hippocampal cell cultures and male Wistar rats exposed to IH cycles and observed that NF-κB is activated in glial cells and neurons after IH. To disclose the relative contribution of the S100B/RAGE/NF-κB pathway to neuronal damage and reactive gliosis after IH we performed sequential loss of function studies using RAGE or S100B neutralizing antibodies, a herpes simplex virus (HSV)-derived amplicon vector that induces the expression of RAGEΔcyto (dominant negative RAGE) and a chemical blocker of NF-κB. Our results show that NF-κB activation peaks 3 days after IH exposure, and that RAGE or NF-κB blockage during this critical period significantly improves neuronal survival and reduces reactive gliosis. Both in vitro and in vivo, S100B blockage altered reactive gliosis but did not have significant effects on neuronal survival. We conclude that both RAGE and downstream NF-κB signaling are centrally involved in the neuronal alterations found in SA models, and that blockage of these pathways is a tempting strategy for preventing neuronal degeneration and reactive gliosis in SA.
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Nanoscale temperature measurements using non-equilibrium Brownian dynamics of a levitated nanosphere. NATURE NANOTECHNOLOGY 2014; 9:425-9. [PMID: 24793558 DOI: 10.1038/nnano.2014.82] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 03/21/2014] [Indexed: 05/27/2023]
Abstract
Einstein realized that the fluctuations of a Brownian particle can be used to ascertain the properties of its environment. A large number of experiments have since exploited the Brownian motion of colloidal particles for studies of dissipative processes, providing insight into soft matter physics and leading to applications from energy harvesting to medical imaging. Here, we use heated optically levitated nanospheres to investigate the non-equilibrium properties of the gas surrounding them. Analysing the sphere's Brownian motion allows us to determine the temperature of the centre-of-mass motion of the sphere, its surface temperature and the heated gas temperature in two spatial dimensions. We observe asymmetric heating of the sphere and gas, with temperatures reaching the melting point of the material. This method offers opportunities for accurate temperature measurements with spatial resolution on the nanoscale, and provides a means for testing non-equilibrium thermodynamics.
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Antibody interference leading to serum PSA overestimation in a post-radical prostatectomy patient: lesson learnt. JOURNAL OF CLINICAL UROLOGY 2014. [DOI: 10.1016/j.bjmsu.2012.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Attainment of metabolic goals in the integrated UK islet transplant program with locally isolated and transported preparations. Am J Transplant 2013; 13:3236-43. [PMID: 24119216 DOI: 10.1111/ajt.12469] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 08/02/2013] [Accepted: 08/10/2013] [Indexed: 01/25/2023]
Abstract
The objective was to determine whether metabolic goals have been achieved with locally isolated and transported preparations over the first 3 years of the UK's nationally funded integrated islet transplant program. Twenty islet recipients with C-peptide negative type 1 diabetes and recurrent severe hypoglycemia consented to the study, including standardized meal tolerance tests. Participants received a total of 35 infusions (seven recipients: single graft; 11 recipients: two grafts: two recipients: three grafts). Graft function was maintained in 80% at [median (interquartile range)] 24 (13.5-36) months postfirst transplant. Severe hypoglycemia was reduced from 20 (7-50) episodes/patient-year pretransplant to 0.3 (0-1.6) episodes/patient-year posttransplant (p < 0.001). Resolution of impaired hypoglycemia awareness was confirmed [pretransplant: Gold score 6 (5-7); 24 (13.5-36) months: 3 (1.5-4.5); p < 0.03]. Target HbA1c of <7.0% was attained/maintained in 70% of recipients [pretransplant: 8.0 (7.0-9.6)%; 24 (13.5-36) months: 6.2 (5.7-8.4)%; p < 0.001], with 60% reduction in insulin dose [pretransplant: 0.51 (0.41-0.62) units/kg; 24 (13.5-36) months: 0.20 (0-0.37) units/kg; p < 0.001]. Metabolic outcomes were comparable 12 months posttransplant in those receiving transported versus only locally isolated islets [12 month stimulated C-peptide: transported 788 (114-1764) pmol/L (n = 9); locally isolated 407 (126-830) pmol/L (n = 11); p = 0.32]. Metabolic goals have been attained within the equitably available, fully integrated UK islet transplant program with both transported and locally isolated preparations.
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Improving health system quality in low- and middle-income countries that are expanding health coverage: a framework for insurance. Int J Qual Health Care 2013; 25:497-504. [DOI: 10.1093/intqhc/mzt053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Imaging in dysynchrony and ventricular function: Techniques. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Burns in rural Kwa-Zulu Natal: Epidemiology and the need for community health education. Burns 2012; 38:1224-30. [PMID: 22698838 DOI: 10.1016/j.burns.2012.04.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 03/27/2012] [Accepted: 04/01/2012] [Indexed: 11/30/2022]
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Abstract
The enduring psychiatric myth is that particular personal, interpersonal and social problems in living are manifestations of ‘mental illness’ or ‘mental disease’, which can only be addressed by ‘treatment’ with psychiatric drugs. Psychiatric drugs are used only to control ‘patient’ behaviour and do not ‘treat’ any specific pathology in the sense understood by physical medicine. Evidence that people, diagnosed with ‘serious’ forms of ‘mental illness’ can ‘recover’, without psychiatric drugs, has been marginalized by drug-focused research, much of this funded by the pharmaceutical industry. The pervasive myth of psychiatric drugs dominates much of contemporary ‘mental health’ policy and practice and raises discrete ethical issues for nurses who claim to be focused on promoting or enabling the ‘mental health’ of the people in their care.
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Prescribed medicines for elderly frail people with diabetes resident in nursing homes-issues of polypharmacy and medication costs. Diabet Med 2012; 29:136-9. [PMID: 22004423 DOI: 10.1111/j.1464-5491.2011.03494.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
AIMS To describe the numbers and costs of medications prescribed to people living with diabetes resident in nursing homes in one primary care trust in the UK. METHODS A retrospective case notes review of 75 people with known diabetes who were resident in the 11 nursing homes in the Coventry teaching primary care trust. RESULTS Sixty-three residents (84%) were being prescribed four or more medications. Forty-four residents (59%) were prescribed anti-platelet drugs for prevention of cardiovascular disease, including aspirin, clopidogrel and dipyridamole, and 31 residents (41%) were on statin therapy. Eighteen (24%) residents had a monthly medication cost that was above £101 per month. On detailed review, these were largely residents who were being prescribed special order liquid preparations, usually for secondary cardiovascular disease prevention. CONCLUSION Polypharmacy, defined as taking four or more drugs per day per resident, is highly prevalent within this population of care home residents with diabetes. A high proportion of residents are prescribed drugs for cardiovascular disease prevention, which may be entirely inappropriate in this population with limited life expectancy. Regular medication review of care home residents with diabetes should be undertaken as it has the potential to reduce costs, minimize adverse drug reactions and increase health gain.
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Abstract
Although the concept of 'mental health nursing' has grown in popularity over the past 35 years, it remains a myth. People believe that they know what it is and value it highly, but cannot describe or define it other than in vague terms. This paper briefly charts the rise of 'mental health nursing', emphasizing its political implications, and in particular, the drive towards an embrace of a person-centred, recovery-focused approach to care. If nurses are to realize such ambitions, they must resolve their historical association with psychiatric nursing. The concept of the 'mental health nurse' might signal the emergence of a new vision for human services, but might also signal the need for 'mental health nurses' to negotiate a formal separation from the traditional 'psychiatric' family.
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Abstract
AIMS To describe the degree of disability and nursing need of people living with diabetes resident in nursing homes in one Primary Care Trust in the UK. METHODS A retrospective case notes review of 75 people with known diabetes who were resident in the 11 nursing homes in Coventry Teaching Primary Care Trust. RESULTS Very significant levels of disability and nursing need were documented in areas of continence, feeding, mobility and communication. Each individual had a mean of four co-morbidities (range 1-8), excluding diabetes. Using the definition of terminal illness based on a negative answer to the question 'would I be surprised if my patient were to die in the next 12 months' it is likely that the majority of individuals described in this study would be classified as being terminally ill. CONCLUSION Using four practical clinical measures, this study has shown very significant levels of disability and nursing care need in this population of mainly elderly people resident in nursing homes in Coventry. In addition, it has demonstrated that a large proportion of nursing home residents with diabetes can be considered to be in the terminal phase of life, a period where many other factors interplay in how care should be delivered and what outcomes are appropriate. In fact, residents in this category may well be candidates for a considered withdrawal of treatments, but not of care.
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Vacuum-assisted closure of the open abdomen in a resource-limited setting. S AFR J SURG 2010; 48:114-115. [PMID: 21542399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM We describe our experience of developing a modified vacuum-assisted closure (VAC) dressing for open abdomens. BACKGROUND We see a high volume of trauma in our department. Massive delays in presentation of patients with acute abdomen are common. Closure at initial laparotomy is not possible in many cases, either because the patient has or will develop abdominal compartment syndrome, or because several re-look laparotomies will be required. A significant proportion of our patients who have undergone laparotomy therefore spend some of their stay in hospital with an open abdomen. The management of these patients is particularly labour intensive for nursing staff. The Opsite sandwich or Bogota bag invariably leaks, and sometimes needs changing daily. If a patient also has a temporary ileostomy, application can be difficult. The commercial VAC dressing is an improvement on the Opsite sandwich, but is prohibitively expensive. Financial constraints and the volume of abdominal trauma and sepsis we see mean that commercial VAC dressings for laparostomy are not affordable in our setting. METHODS/RESULTS We describe our adapted VAC dressing. It is inexpensive and easy to apply, has made a big difference in the nursing of patients with an open abdomen, and has enabled us to increase the rate of delayed primary closure (i.e., we have reduced the rate of ventral hernia). CONCLUSION The modified VAC dressing is now our department's method of choice for temporary abdominal closure.
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The ripples of knowledge and the boundaries of practice: The problem of evidence in psychotherapy research. ACTA ACUST UNITED AC 2010. [DOI: 10.1080/13569080120042171] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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The tidal model of mental health recovery and reclamation: application in acute care settings. Issues Ment Health Nurs 2010; 31:171-80. [PMID: 20144029 DOI: 10.3109/01612840903276696] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The development, over the last decade, of the Tidal Model of Mental Health Recovery and Reclamation is described, and a summary of the application of the various Tidal processes of care is provided. Studies of evaluations of the Tidal Model within acute care settings are summarised and the potential contribution that the model makes to the development of person-centred care, within acute settings, is discussed.
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Commentaries and reflections on mental health nursing in the UK at the dawn of the new millennium: Commentary 1. J Ment Health 2009. [DOI: 10.1080/jmh.9.6.617.619] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Occupational blood exposure among unlicensed home care workers and home care registered nurses: are they protected? Am J Ind Med 2009; 52:563-70. [PMID: 19479817 DOI: 10.1002/ajim.20701] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Little is known about the risk of blood exposure among personnel providing care to individual patients residing at home. The objective of this study was to document and compare blood exposure risks among unlicensed home care personal care assistants (PCAs) and home care registered nurses (RNs). METHODS PCAs self-completed surveys regarding blood and body fluid (BBF) contact in group settings (n = 980), while RNs completed mailed surveys (n = 794). RESULTS PCAs experience BBF contact in the course of providing care for home-based clients at a rate approximately 1/3 the rate experienced by RNs providing home care (8.1 and 26.7 per 100 full time equivalent (FTE), respectively), and the majority of PCA contact episodes did not involve direct sharps handling. However, for PCAs who performed work activities such as handling sharps and changing wound dressings, activities much more frequently performed by RNs, PCAs were at increased risk of injury when compared with RNs (OR = 7.4 vs. 1.4) and (OR = 6.3 vs. 2.5), respectively. CONCLUSION Both PCAs and RNs reported exposures to sharps, blood, and body fluids in the home setting at rates that warrant additional training, prevention, and protection. PCAs appear to be at increased risk of injury when performing nursing-related activities for which they are inexperienced and/or lack training. Further efforts are needed to protect home care workers from blood exposure, namely by assuring coverage and enforcement of the Occupational Safety and Health Administration (OSHA) Bloodborne Pathogen Standard [Occupational Safety and Health Administration. 1993. Frequently Asked Questions Concerning the Bloodborne Pathogens Standard. Available at: http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS &p_id=21010#Scope. Accessed May 30, 2008].
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p75NTRExpression is induced in isolated neurons of the penumbra after ischemia by cortical devascularization. J Neurosci Res 2009; 87:1892-903. [DOI: 10.1002/jnr.21993] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Community assault--the cost of rough justice. S Afr Med J 2009; 99:160-161. [PMID: 19563091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
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Abstract
Thomas Szasz's original critique of the concept of 'mental illness' is almost 50 years old. Over that half century Szasz has maintained a consistent campaign against the 'Therapeutic State', challenging the paternalism of coercive psychiatry and defending liberty and autonomy. Despite his widespread celebrity Szasz continues to be misread and misrepresented. In this paper we review some of Szasz's key ideas, in the light of Clarke's recent critique, setting this within the context of 'mental health nursing' and the problems in living affecting persons worldwide.
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Abstract
Modern psychiatry, which once focused only on the containment and "cure" of madness, has evolved into a mental health industry, where almost every aspect of human life, may be cast as a "mental disorder". In Western countries, a narcissistic appetite for self-improvement and "well-being" has evolved over the past 50 years, mirroring the emergence of the celebrity culture. These developments appear linked to a fading of interest in the traditional concept of human caring, leading to a further marginalisation of people with serious "mental health problems" and to increased use of authoritarian forms of control and containment. In this paper, the idea of vocation in the field of mental health is explored. What exactly are we called to do as people-whether as professionals, friends or fellow travellers-when someone experiences a significant problem in human living?
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'Veiling sexualities': a grounded theory of mental health nurses responses to issues of sexuality. J Adv Nurs 2008; 62:307-17. [PMID: 18426455 DOI: 10.1111/j.1365-2648.2007.04586.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM This paper is a report of a study to develop a grounded theory explaining how mental health nurses respond to issues of sexuality in clinical practice. BACKGROUND The history of sexuality and people with mental health problems has largely been a history shrouded in misunderstanding, stigma, myth and negativity. However, individuals with mental health problems may experience sexuality and relationship difficulties related to their life experiences, mental illness, or its treatment. METHODS Grounded theory was the methodology used for the study. Interviews were conducted in 2005-2006 with 27 mental health nurses working an urban area in the Republic of Ireland. Data were analysed using the concurrent processes of constant comparative analysis, data collection, theoretical sampling and memo writing. FINDINGS The core category to emerge from the data was 'veiling sexualities'. This refers to participants' accounts of how they responded to the sexuality dimension of clients' lives. Participants' main concerns about sexuality were related to feelings of personal and professional vulnerability, due to a lack of competence, comfort and confidence in this area. The theory highlights the manner in which nurses perpetuate practices that marginalize, discriminate and socially exclude clients as 'sexual citizens'. CONCLUSION The theory of Veiled Sexualities may facilitate acknowledgement of the presence of sexuality in all nurse-client encounters, and promote a discourse on the sexual rights of people experiencing mental distress among mental health nurses and all involved in the delivery of mental health services.
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A phase 2 pilot study of pegfilgrastim and filgrastim for mobilizing peripheral blood progenitor cells in patients with non-Hodgkin's lymphoma receiving chemotherapy. Haematologica 2008; 93:405-12. [DOI: 10.3324/haematol.11287] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Words of wisdom. Nurs Stand 2007; 21:24-25. [PMID: 28091089 DOI: 10.7748/ns.21.37.24.s29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Words of wisdom. Nurs Stand 2007; 21:24-5. [PMID: 17550000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
When we feel that something is not right or is unsatisfactory in our lives, counselling can help us come to an understanding of the problem and its personal meaning.
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The persistence of memory: using narrative picturing to co-operatively explore life stories in qualitative inquiry. Nurs Inq 2007; 14:35-41. [PMID: 17298606 DOI: 10.1111/j.1440-1800.2007.00350.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Narrative picturing is a creative interviewing technique that can be applied within qualitative research interviews with the aim of enhancing the 'richness' of narrative data. This paper describes briefly narrative picturing and its theoretical underpinnings. Whilst using this technique within a dedicated study of people with experience of self-cutting, two key factors emerged in relation to advancing the use of narrative picturing. These were overcoming the inhibitions of the person interviewed and the exploration of personal meaning(s) disclosed during narrative picturing, which were commonly found to be particularly abstract or unprocessed. This paper suggests interviewing techniques aimed at overcoming these potential limitations. Once overcome, narrative picturing appeared to support the exploration and narration of more 'in-depth' accounts of lived experience, enhancing understandings of both the person interviewed and the researcher.
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Computer technology and the childhood immunization programme: an investigation of low uptake rates in Coventry Primary Care Trust. J Public Health (Oxf) 2006; 28:351-4. [PMID: 16956928 DOI: 10.1093/pubmed/fdl050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The childhood vaccination programme in Coventry Primary Care Trust (PCT) has resulted in consistently low uptake rates for a number of years. After an evaluation of operational processes, an examination of the data systems was performed. METHODS The under-reporting of vaccinations performed and methodology issues were investigated using data collected by the Child Health Information Department (CHID) and the Finance Department. RESULTS Data held by the Finance Department result in an uptake rate of between 0.79 and 1.92% higher than those held by the CHID. Locally, the Southwest Child Health (SWIFT) system, the programme used to calculate uptake rates by many of the PCTs across the country, excludes those children residing outside the boundary but registered within it. Coventry PCT's Cover of Vaccination Evaluated Rapidly (COVER) statistics are based on a subgroup of the responsible population. CONCLUSIONS The computer technology currently utilized by the NHS provides inaccurate statistics for the COVER programme. Systematic under-reporting to the CHID results in moderately lowered uptake rates. A programming anomaly in the SWIFT system has resulted in the collection of data based on a subgroup of the responsible population. This undermines the validity of the statistics collected and renders comparability of data between different PCTs, particularly those using different systems, difficult.
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Abstract
Research into sexual risk behaviour among people with 'severe' mental health problems suggested that they are likely to engage in high-risk sexual behaviour, for a number of reasons, putting them at risk of sexually transmitted diseases. The aim of this review is to describe approaches, content and outcomes of sexual health education programmes, developed and implemented for people with mental health problems. A literature review from 1980 to 2005 was carried out using the electronic databases CINAHL, PsycINFO, British Nursing Index, Pubmed and Medline, and the Cochrane library was also searched. The literature search was confined to papers written in English. The keywords 'sexuality', 'sexual health education', 'sexual health promotion', 'HIV', 'sexually transmitted disease' were combined with 'mental illness', 'chronic mental illness''severe mental illness''persistent mental illness''psychiatry', 'mental disorder', 'education interventions' and 'evaluation'. A vast amount of literature was recovered on sexual risk behaviour in people with severe mental health problems, and sexual dysfunction as a result of prescribed medication. As the focus of the review was on sexual health education, this literature was omitted. Although the literature on sexual health education for people experiencing mental health problems was sparse, 14 studies were located that either described or evaluated sexual health education programmes. Most sex education programmes focused on topics such as HIV and other sexually transmitted diseases, negotiating safe sex and skill development in condom use. Findings suggested that the people who attended benefited from sexual health education programmes, facilitated in a sensitive and supportive manner. Education tended to produce a reduction in sexual risk behaviour as opposed to complete cessation. Nevertheless, it is appropriate to consider integrating such education with service provision. The results of the review provide guidance to service providers and mental health nurses wishing to develop and evaluate sexual health education programmes for service users. Areas for future research are also identified.
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Abstract
Touch is used in many cultures as a means of relating directly with another person. In this seventh article in our Heart of Nursing series, we look at how touch, used judiciously, can be a priceless form of doing.
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Crystal structure of the bacterial protein HemS in complex with haem. Acta Crystallogr A 2006. [DOI: 10.1107/s0108767306096437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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