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1.
Age Ageing ; 52(7)2023 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-37505990

RESUMO

BACKGROUND: Optimising timely discharge from hospitals is an international priority. In 2020, the Coronavirus disease 2019 (COVID-19) pandemic resulted in the United Kingdom Government implementing the Discharge to Assess (D2A) model across England. This funded temporary care home placement to allow further recovery and assessment of care needs outside of the hospital. OBJECTIVES: Determine if older adults discharged from hospital to care homes after implementation of D2A differ in their characteristics or outcomes. DESIGN AND METHODS: Two cohorts of older adults discharged from hospital to care homes pre- and post-implementation of the D2A model (n = 244), with 6 months of follow-up. Data were extracted from routinely collected healthcare records. RESULTS: The mean duration of the hospital admission was reduced (29 vs. 23 days (P = 0.02)) but discharges to care homes did not increase with implementation of D2A (n = 161 in both cohorts prior to exclusions). In July-December 2020 (post-implementation), 28% of people were living in a private residence 6 months post-discharge, compared with 18% in the same period in 2019 (P = 0.09). When those who died were excluded, this changed to 40 vs. 28% (P = 0.19). There was no change in 6-month mortality (26 vs. 35% (P = 0.17)), and no increase in readmission rate (0.48 vs. 0.63 (P = 0.21) readmissions-per-patient over 6 months). No differences in key characteristics were found. However, patients were placed in care homes further from admission addresses (17.3 vs. 9.8 km (P = 0.00001)). CONCLUSIONS: Implementation of D2A did not result in poorer outcomes but was associated with a reduced length of hospital stay.


Assuntos
COVID-19 , Alta do Paciente , Humanos , Idoso , Estudos de Coortes , Readmissão do Paciente , Assistência ao Convalescente , COVID-19/terapia , Tempo de Internação , Hospitais
2.
Psychiatr Q ; 94(2): 221-231, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37145257

RESUMO

Although digital health solutions are increasingly popular in clinical psychiatry, one application that has not been fully explored is the utilization of survey technology to monitor patients outside of the clinic. Supplementing routine care with digital information collected in the "clinical whitespace" between visits could improve care for patients with severe mental illness. This study evaluated the feasibility and validity of using online self-report questionnaires to supplement in-person clinical evaluations in persons with and without psychiatric diagnoses. We performed a rigorous in-person clinical diagnostic and assessment battery in 54 participants with schizophrenia (N = 23), depressive disorder (N = 14), and healthy controls (N = 17) using standard assessments for depressive and psychotic symptomatology. Participants were then asked to complete brief online assessments of depressive (Quick Inventory of Depressive Symptomatology) and psychotic (Community Assessment of Psychic Experiences) symptoms outside of the clinic for comparison with the ground-truth in-person assessments. We found that online self-report ratings of severity were significantly correlated with the clinical assessments for depression (two assessments used: R = 0.63, p < 0.001; R = 0.73, p < 0.001) and psychosis (R = 0.62, p < 0.001). Our results demonstrate the feasibility and validity of collecting psychiatric symptom ratings through online surveys. Surveillance of this kind may be especially useful in detecting acute mental health crises between patient visits and can generally contribute to more comprehensive psychiatric treatment.


Assuntos
Depressão , Inquéritos Epidemiológicos , Internet , Transtornos Psicóticos , Autorrelato , Saúde Mental/normas , Intervenção Baseada em Internet , Inquéritos Epidemiológicos/métodos , Inquéritos Epidemiológicos/normas , Reprodutibilidade dos Testes , Depressão/diagnóstico , Depressão/psicologia , Humanos , Masculino , Feminino , Adulto Jovem , Adulto , Esquizofrenia/diagnóstico , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia
3.
Nat Commun ; 14(1): 2429, 2023 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-37105978

RESUMO

The principal nature-based solution for offsetting relative sea-level rise in the Ganges-Brahmaputra delta is the unabated delivery, dispersal, and deposition of the rivers' ~1 billion-tonne annual sediment load. Recent hydrological transport modeling suggests that strengthening monsoon precipitation in the 21st century could increase this sediment delivery 34-60%; yet other studies demonstrate that sediment could decline 15-80% if planned dams and river diversions are fully implemented. We validate these modeled ranges by developing a comprehensive field-based sediment budget that quantifies the supply of Ganges-Brahmaputra river sediment under varying Holocene climate conditions. Our data reveal natural responses in sediment supply comparable to previously modeled results and suggest that increased sediment delivery may be capable of offsetting accelerated sea-level rise. This prospect for a naturally sustained Ganges-Brahmaputra delta presents possibilities beyond the dystopian future often posed for this system, but the implementation of currently proposed dams and diversions would preclude such opportunities.

4.
Drug Saf ; 46(5): 501-507, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37087705

RESUMO

INTRODUCTION: In recent years, there has been increasing interest from regulatory agencies and scientific organisations into the recording, coding and reporting of medication errors. Accuracy and consistency in the handling of medication error reports ensure the safety and effectiveness of medicines and provide reliable information to both healthcare professionals and patients. OBJECTIVE: The authors have examined a sample of Medical Dictionary for Regulatory Activities (MedDRA®) coded reports that describe medication errors to assess the accuracy and consistency of MedDRA® coding, and to identify the main types of coding errors for the newly introduced COVID-19 vaccines. METHODS: The sample of coded terms was assessed by two MedDRA® experts applying the Four Eyes Principle. It included 1500 reported terms drawn from the Uppsala Monitoring Centre database reported up to 25 August, 2021, describing medication errors for COVID-19 vaccines with their assigned MedDRA® terms. RESULTS: One third of the records could not be assessed because of incomplete or unclear verbatims. In one third, MedDRA® term assignments were correct, but another third of the sample was not adequately coded. The most frequent coding errors corresponded to vague MedDRA® Preferred Term assignments despite more detailed information being available in the verbatim for a more precise coding. This observation is similar to findings in the EudraVigilance database, where some of the most frequently assigned MedDRA® terms for medication errors also represent vague concepts. CONCLUSIONS: The findings indicate that understanding of medication error documentation and of the importance of accurate extraction of information from case narratives, as well as knowledge of MedDRA® content and coding guidelines need to be reinforced. The authors provide useful references to training opportunities and to the applicable International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use-Endorsed Guides for MedDRA® users.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Humanos , Vacinas contra COVID-19/efeitos adversos , Sistemas de Notificação de Reações Adversas a Medicamentos , COVID-19/prevenção & controle , Erros de Medicação/prevenção & controle , Bases de Dados Factuais
5.
Sci Total Environ ; 867: 161415, 2023 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-36621493

RESUMO

Coastal marshes are globally important for sequestering carbon, yet sea-level rise and anthropogenic stressors can reduce their capacity as carbon sinks. Marsh restoration can offset a portion of carbon loss through the degradation of natural marshes, but potential differences in the sources and stability of soil organic carbon (SOC) between created and natural marshes may affect their function as a long-term carbon sink. Here, we examine the sources and chemical stability of SOC in natural and created marshes across the Gulf coast of Louisiana, USA. Marshes were examined along an estuarine salinity gradient in a former interdistributary basin of the Mississippi River Delta and in six created marshes across a 32-year chronosequence and a natural reference marsh (n = 6) in the Chenier Plain. Carbon source was assessed using δ13C analysis and chemical stability was determined through an acid hydrolysis digestion that removed labile carbon (LC). Soil δ13C values suggested that the local vegetation dominated SOC in all natural marshes although brackish marshes had a mix of sources and degradation of SOC. Recalcitrant carbon (RC) was 72.2 ± 0.5 % of SOC across fresh, brackish and saline marshes. The depth-averaged RC accumulation rate was almost three times greater than LC accumulation rate, yet both contributed significantly to accretion and long-term SOC accumulation (124-132 g m-2 y-1 in natural marshes). RC and SOC accumulation rate increased with mineral sediment accumulation rate. For the created marshes, SOC became increasingly recalcitrant due to an increase in in-situ plant inputs, but accumulation rates were lower than the natural marshes. Overall, this study illustrates that natural marshes have a large stock of RC from the vegetation while dredge sediment created marshes have no plant-derived carbon initially, which accumulates slowly thereafter. Restoration practices may be improved by preserving and augmenting these deteriorating but carbon-rich natural marshes.

6.
Osteoporos Int ; 34(2): 399-404, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36472657

RESUMO

We investigated frailty and refracture risk among older adults with a minimal trauma fracture. After adjusting for age, sex, and site of initial fracture, increasing frailty was associated with an increased risk subsequent fracture. These results indicate the need to routinely screen for frailty following an initial fracture among older adults. INTRODUCTION: Minimal trauma fractures are common among older adults, and frailty increases risk of an initial minimal trauma fracture. This study was undertaken to estimate the risk of subsequent fracture based on frailty status at the time of an initial fracture. METHODS: The study population was older adults presenting to hospital, aged 60 years or more, with a minimal trauma fracture. Frailty was estimated using a cumulative deficit approach. The risk of subsequent fracture based on increasing cumulative frailty deficit item group, adjusted for sex, age, and site of initial fracture, was estimated using Cox's proportional hazard model. RESULTS: Between January 2014 and December 2020, 12,115 older adults presented to hospital (8371 women [69%]), with an initial minimal trauma fracture. The average age was 80 years (SD 9.5). Subsequent fractures identified during the follow-up period occurred in 1137 (9.4%) of study participants. The incidence of subsequent fracture ranged from 25.0 per 1000 older adults (95% confidence interval (CI) 22.4 to 27.8) among the lowest frailty deficit group (1 deficit item) to 31.8 per 1000 (95% CI 28.0 to 35.8) among the highest frailty deficit group (4 to 12 deficit items). After adjusting for age, sex, and site of initial fracture, an increasing number of frailty deficit items was associated with increased risk subsequent fracture (p-value for trend = 0.008). CONCLUSION: Our results indicate that following an initial minimal trauma fracture, frailty independently increases the risk of a subsequent fracture. Therefore, it is important at the time of an initial fracture that older women and men are screened for the presence of frailty, and models of care are implemented to reduce the risk of subsequent fracture among this vulnerable group of older adults.


Assuntos
Fraturas Ósseas , Fragilidade , Masculino , Humanos , Feminino , Idoso , Idoso de 80 Anos ou mais , Fragilidade/complicações , Fragilidade/epidemiologia , Fraturas Ósseas/epidemiologia , Incidência , Hospitais , Fatores de Risco
7.
J Clin Nurs ; 32(3-4): 477-484, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35212075

RESUMO

BACKGROUND: While advances in healthcare mean people are living longer, increasing frailty is a potential consequence of this. The relationship between frailty among older surgical patients and hospital acquired adverse events has not been extensively explored. We sought to describe the relationship between increasing frailty among older surgical patients and the risk of hospital acquired adverse events. METHODS: We included consecutive surgical admissions among patients aged 70 years or more across the SWSLHD between January 2010 and December 2020. This study used routinely collected ICD-10-AM data, obtained from the government maintained Admitted Patient Data Collection. The relationships between cumulative frailty deficit items and risk of hospital acquired adverse events were assessed using Poisson regression modelling. This study followed the RECORD/STROBE guidelines. RESULTS: During the study period, 44,721 (57% women) older adults were admitted, and 41% (25,306) were planned surgical admissions. The risk of all adverse events increased with increasing number of frailty deficit items, the highest deficit items group (4-12 deficit items) compared with the lowest deficit items group (0 or 1 deficit item): falls adjusted rate ratio (adj RR) = 15.3, (95% confidence interval (CI) 12.1, 19.42); pressure injury adj RR = 21.3 (95% CI 12.53, 36.16); delirium adj RR = 40.9 (95% CI 31.21, 53.55); pneumonia adj RR = 16.5 (95% CI 12.74, 21.27); thromboembolism adj RR = 17.3 (95% CI 4.4, 11.92); and hospital mortality adj RR = 6.2 (95% CI 5.18, 7.37). CONCLUSION: The increase in number of cumulative frailty deficit items among older surgical patients was associated with a higher risk of adverse hospital events. The link offers an opportunity to clinical nursing professionals in the surgical setting, to develop and implement targeted models of care and ensure the best outcomes for frail older adults and their families.


Assuntos
Fragilidade , Idoso , Humanos , Feminino , Masculino , Idoso Fragilizado , Hospitalização , Pacientes , Hospitais , Avaliação Geriátrica
9.
Int J Mol Sci ; 23(3)2022 Feb 08.
Artigo em Inglês | MEDLINE | ID: mdl-35163806

RESUMO

Prevalence of type 2 diabetes increased from 2.5% of the US population in 1990 to 10.5% in 2018. This creates a major public health problem, due to increases in long-term complications of diabetes, including neuropathy, retinopathy, nephropathy, skin ulcers, amputations, and atherosclerotic cardiovascular disease. In this review, we evaluated the scientific basis that supports the use of physiologic insulin resensitization. Insulin resistance is the primary cause of type 2 diabetes. Insulin resistance leads to increasing insulin secretion, leading to beta-cell exhaustion or burnout. This triggers a cascade leading to islet cell destruction and the long-term complications of type 2 diabetes. Concurrent with insulin resistance, the regular bursts of insulin from the pancreas become irregular. This has been treated by the precise administration of insulin more physiologically. There is consistent evidence that this treatment modality can reverse the diabetes-associated complications of neuropathy, diabetic ulcers, nephropathy, and retinopathy, and that it lowers HbA1c. In conclusion, physiologic insulin resensitization has a persuasive scientific basis, significant treatment potential, and likely cost benefits.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Resistência à Insulina , Insulina Regular Humana/uso terapêutico , Diabetes Mellitus Tipo 2/metabolismo , Hemoglobinas Glicadas/metabolismo , Humanos , Secreção de Insulina/efeitos dos fármacos , Insulina Regular Humana/farmacologia , Pâncreas/efeitos dos fármacos , Pâncreas/metabolismo
10.
J Am Pharm Assoc (2003) ; 62(3): 740-749.e3, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35012893

RESUMO

BACKGROUND: Lean methodology, specifically value stream mapping, can be used to identify and reduce inefficiencies in the medication synchronization process. OBJECTIVES: The objectives of this study were to (1) evaluate potential medication synchronization process improvements to reduce nonvalue-added actions, (2) assess fidelity to the medication synchronization core components, and (3) identify the best process for medication synchronization for an independent community pharmacy with multiple locations. METHODS: This study used an observational, cross-sectional design. A value stream map was created to provide a detailed illustration of each step in the medication synchronization process. Time for each step of the medication synchronization process was observed on site on different days and times as well as the time required to process, package, and verify prescription medications. These steps were conducted before interventions were made to the process and after to compare the difference. The organizational readiness for change tool was administered to employees of the independent pharmacy before interventions to determine their perspective of the medication synchronization process and assess their readiness for change. RESULTS: Owing to various interventions made to the medication synchronization process, 2 steps in the process were eliminated. This resulted in a decrease in adherence packaging time workflow by 69.4%. Staff (n = 9) rated the medication synchronization process on 4 components: acceptability of the current process (13.8 ± 3.6), intervention appropriateness (13.7 ± 3.7), feasibility of a new medication synchronization process (17.1 ± 2.3), and organizational level of support (21.8 ± 4.1). CONCLUSION: Value stream mapping proved to be a valuable tool in identifying inefficiencies in the medication synchronization process and reducing nonvalue-added waste. The result was a decrease in time required for adherence packaging workflow and a more standardized medication synchronization process across multiple independent pharmacy locations. This more standardized process can play a key role in improving the continuity of patient care, increasing medication adherence, and in turn decreasing the number of hospital admissions.


Assuntos
Serviços Comunitários de Farmácia , Farmácias , Farmácia , Estudos Transversais , Humanos , Adesão à Medicação
11.
PhytoKeys ; 161: 41-60, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33005089

RESUMO

Iris dabashanensis C.A.Wilson, sp. nov. and I. probstii C.A.Wilson, sp. nov. from China are described and illustrated. Both species occur on grassy slopes in mountainous regions of south-central China. The former is known from the Daba Mountains in rocky, calcareous soils associated with shrubs or mixed conifer and hardwood forests, while the latter is known from a region of karst terrain beside rice fields or under pine woods in Guizhou Province. Molecular data resolves both species in series Chinenses in a subclade that also includes I. odaesanensis, while morphologically they are similar to I. henryi. These newly described species are two of four members of series Chinenses that occur in south-central China.

12.
BMC Musculoskelet Disord ; 21(1): 133, 2020 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-32111200

RESUMO

BACKGROUND: One in three women and one in five men are expected to experience a minimal-trauma-fracture after the age of 50-years, which increases the risk of subsequent fracture. Importantly, timely diagnosis and optimal treatment in the form of a fracture liaison service (FLS), has been shown to reduce this risk of a subsequent fracture. However, baseline risk of subsequent fracture among this group of FLS patients has not been well described. Therefore, this study aims to estimate absolute risk of subsequent fracture, among women and men aged 50-years or more, presenting to hospital with a minimal-trauma-fracture. METHODS: Women and men aged 50-years or more with a minimal-trauma-fracture, presenting to hospitals across the South Western Sydney Local Health District between January 2003 and December 2017 were followed to identify subsequent fracture presentations to hospital. Absolute risk of subsequent fracture was estimated, by taking into account the competing risk of death. RESULTS: Between January 2003 and December 2017-15,088 patients presented to the emergency departments of the five hospitals in the SWSLHD (11,149, women [74%]), with minimal-trauma-fractures. Subsequent fractures identified during the follow-up period (median = 4.5 years [IQR, 1.6-8.2]), occurred in 2024 (13%) patients. Death during the initial hospital stay, or during a subsequent hospital visit was recorded among 1646 patients (11%). Women were observed to have 7.1% risk of subsequent fracture after 1-year, following an initial fracture; and, the risk of subsequent fracture after 1-year was 6.2% for men. After 5-years the rate among women was 13.7, and 11.3% for men, respectively. Cumulative risk of subsequent fracture when initial fractures were classified as being at proximal or distal sites are also presented. CONCLUSION: This study has estimated the baseline risk of subsequent fracture among women and men presenting to hospital with minimal trauma fractures. Importantly, this information can be used to communicate risk to patients deciding to attend an osteoporosis refracture prevention clinic, and highlight the need for screening, and initial of treatment when indicated, once a minimal-trauma-fracture has occurred.


Assuntos
Fraturas por Osteoporose/epidemiologia , Fraturas por Osteoporose/prevenção & controle , Prevenção Secundária/métodos , Idoso , Idoso de 80 Anos ou mais , Austrália/epidemiologia , Conservadores da Densidade Óssea/uso terapêutico , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Fraturas por Osteoporose/diagnóstico , Fraturas por Osteoporose/cirurgia , Recidiva , Medição de Risco , Fatores de Risco , Fatores Sexuais
13.
J Acoust Soc Am ; 146(1): 316, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31370597

RESUMO

Speech inversion is a well-known ill-posed problem and addition of speaker differences typically makes it even harder. Normalizing the speaker differences is essential to effectively using multi-speaker articulatory data for training a speaker independent speech inversion system. This paper explores a vocal tract length normalization (VTLN) technique to transform the acoustic features of different speakers to a target speaker acoustic space such that speaker specific details are minimized. The speaker normalized features are then used to train a deep feed-forward neural network based speech inversion system. The acoustic features are parameterized as time-contextualized mel-frequency cepstral coefficients. The articulatory features are represented by six tract-variable (TV) trajectories, which are relatively speaker invariant compared to flesh point data. Experiments are performed with ten speakers from the University of Wisconsin X-ray microbeam database. Results show that the proposed speaker normalization approach provides an 8.15% relative improvement in correlation between actual and estimated TVs as compared to the system where speaker normalization was not performed. To determine the efficacy of the method across datasets, cross speaker evaluations were performed across speakers from the Multichannel Articulatory-TIMIT and EMA-IEEE datasets. Results prove that the VTLN approach provides improvement in performance even across datasets.

14.
Appl Opt ; 57(25): 7377, 2018 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-30182958

RESUMO

This erratum is submitted to correct information regarding Fig. 8 of Appl. Opt.57, E142 (2018)APOPAI0003-693510.1364/AO.57.00E142.

15.
Appl Opt ; 57(22): E142-E146, 2018 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-30117912

RESUMO

The characterization of an amplified piezoelectric actuator (APA) as a new axial scanning method for multiple-reference optical coherence tomography (MR-OCT) is described. MR-OCT is a compact optical imaging device based on a recirculating reference-arm-scanning optical delay using a partial mirror that can enhance the imaging depth range by more than 10 times the reference mirror's scanning amplitude. The scanning amplitude of the used APA was varied between 30 µm and 250 µm, depending on the scanning frequency of between 0.8 kHz and 1.2 kHz. A silver-coated miniature mirror was attached to the APA via ultraviolet-cured optical adhesive, and the light source was a super-luminescent diode with 1310 nm center wavelength and 56 nm bandwidth. The sensitivity was measured with and without the partial mirror in the reference delay line as a function of scan speed, frequency, and range, therefore providing results for MR-OCT and TD-OCT modes. It was found that the APA provides more than twice the mechanical scanning range compared to other opto-mechanic actuators, but results indicate degradation of signal-to-noise ratio and sensitivity at larger imaging depths. In conjunction with MR-OCT, the scan range of maximum 200 µm can be enhanced up to 1-1.5 mm by using a reduced amount of orders of reflections, which could be of interest to increase sensitivity in the future.

16.
Adv Ther ; 35(5): 666-670, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29730835

RESUMO

INTRODUCTION: Insulation failure leading to conductor externalization (CE) of a Linox (Biotronik, Berlin, Germany) implantable cardioverter defibrillator (ICD) lead has recently been reported. The aim of this study was to assess prospectively all Linox family ICD leads implanted at our center for evidence of CE or an electrical abnormality. METHODS: All patients with a Linox family ICD lead implanted at our center, between November 2007 and March 2015, were identified and all living patients were invited to attend for fluoroscopic screening and electrical assessment of the lead. RESULTS: A total of 183 patients had a Linox family ICD lead implanted at our center. Of these, 5 patients (2.7%) had the lead extracted because of electrical failure and 2 of these leads had evidence of CE. Out of 158 living patients with a Linox family ICD lead, 111 patients attended for screening (mean age 63.1 years, 22.5% female). In this group of patients, no cases of CE or electrical abnormalities of the lead were identified. CONCLUSION: In this study evaluating 183 patients with a Linox family ICD lead implanted at a single center, 5 leads (2.7%) were explanted because of electrical failure and 2 of these leads had evidence of CE. Prospective fluoroscopic assessment of 111 Linox family ICD leads, with a mean dwell time of 31.5 months, revealed no further cases of CE.


Assuntos
Desfibriladores Implantáveis , Cardioversão Elétrica/instrumentação , Análise de Falha de Equipamento , Falha de Equipamento , Desfibriladores Implantáveis/efeitos adversos , Desfibriladores Implantáveis/normas , Desfibriladores Implantáveis/estatística & dados numéricos , Fenômenos Eletromagnéticos , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Reino Unido
17.
Geochem Trans ; 18(1): 4, 2017 Sep 11.
Artigo em Inglês | MEDLINE | ID: mdl-29086805

RESUMO

To identify the causes of salinization and arsenic contamination of surface water on an embanked island (i.e., polder) in the tidal delta plain of SW Bangladesh we collected and analyzed water samples in the dry (May) and wet (October) seasons in 2012-2013. Samples were collected from rice paddies (wet season), saltwater ponds used for brine shrimp aquaculture (dry season), freshwater ponds and tidal channels (both wet and dry season), and rainwater collectors. Continuous measurements of salinity from March 2012 to February 2013 show that tidal channel water increases from ~0.15 ppt in the wet season up to ~20 ppt in the dry season. On the polder, surface water exceeds the World Health Organization drinking water guideline of 10 µg As/L in 78% of shrimp ponds and 27% of rice paddies, raising concerns that produced shrimp and rice could have unsafe levels of As. Drinking water sources also often have unsafe As levels, with 83% of tubewell and 43% of freshwater pond samples having >10 µg As/L. Water compositions and field observations are consistent with shrimp pond water being sourced from tidal channels during the dry season, rather than the locally saline groundwater from tubewells. Irrigation water for rice paddies is also obtained from the tidal channels, but during the wet season when surface waters are fresh. Salts become concentrated in irrigation water through evaporation, with average salinity increasing from 0.43 ppt in the tidal channel source to 0.91 ppt in the rice paddies. Our observations suggest that the practice of seasonally alternating rice and shrimp farming in a field has a negligible effect on rice paddy water salinity. Also, shrimp ponds do not significantly affect the salinity of adjacent surface water bodies or subjacent groundwater because impermeable shallow surface deposits of silt and clay mostly isolate surface water bodies from each other and from the shallow groundwater aquifer. Bivariate plots of conservative element concentrations show that all surface water types lie on mixing lines between dry season tidal channel water and rainwater, i.e., all are related by varying degrees of salinization. High As concentrations in dry season tidal channel water and shrimp ponds likely result from groundwater exfiltration and upstream irrigation in the dry season. Arsenic is transferred from tidal channels to rice paddies through irrigation. Including groundwater samples from the same area (Ayers et al. in Geochem Trans 17:1-22, 2016), principal components analysis and correlation analysis reveal that salinization explains most variation in surface water compositions, whereas progressive reduction of buried surface water by dissolved organic carbon is responsible for the nonconservative behavior of S, Fe, and As and changes in Eh and alkalinity of groundwater.

18.
J Biomed Opt ; 22(8): 1-7, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28831794

RESUMO

A technique based on multiple reference optical coherence tomography (MR-OCT) is proposed for simultaneous imaging at multiple depths. The technique has been validated by imaging a reference sample and a fingerprint in-vivo. The principle of scanning multiple selected layers is shown by imaging a partial fingerprint with 200×200×200 voxels of 3×3×0.5 mm size and obtaining an arbitrary amount of layers merely by digital processing. The spacing among the layers can be adjusted arbitrarily, and the SNR roll-off is shown for three different spacings. At a mirror scan frequency of 1 kHz and an A-line rate of 2 kHz, the acquisition time was 20 s for one volume. The results show the feasibility of the application of layer scanning MR-OCT that uses a partial mirror in the reference arm of the Michelson interferometer. The reduced scan range required for layer scanning allows even higher scan rates that are limited only by the voice coil design and the mass-spring system, e.g., mirror mass, spring constant, and damping.


Assuntos
Dermatoglifia , Aumento da Imagem/métodos , Imagens de Fantasmas , Tomografia de Coerência Óptica/métodos , Humanos
19.
J Ment Health ; 26(6): 530-537, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28675327

RESUMO

BACKGROUND: Since 2001, a policy of positive mental health recovery has been promoted in the UK, with service user involvement. This has not been easy to implement in the clinical setting. AIMS: To develop and validate a brief self-report, service user-designed, outcome measure (Mini-SeRvE), for clinical use, including spiritual and religious issues. METHODS: From the previously developed Service user Recovery Evaluation scale (SeRvE), 15 questions were selected for Mini-SeRvE which was self-completed by 207 people; 100 service users and, for comparison, 107 staff. Results were analysed using SPSS software (SPSS Inc., Chicago, IL). RESULTS: Mini-SeRvE is reliable, Cronbach's alpha 0.852. Correlation with another recovery scale, Mental Health Recovery Measure, was high, r = 0.819. Three reliable subscales emerged; existential well-being (EWB), mental ill-being (MIB) and religious well-being (RWB). Scores of the EWB and MIB subscales were higher for staff, consistent with higher mental well-being. Religious well-being scores were higher in service users, who also rated religion as more important to them. CONCLUSIONS: Mini-SeRvE is a valid measure of service user recovery. The importance of religion/spiritual belief for our users is highlighted, this being reflected in the subject matter of Mini-SeRvE. Mini-SeRvE assessments could show individual priorities, evaluate therapy and aid clinical decision-making.


Assuntos
Transtornos Mentais/diagnóstico , Transtornos Mentais/terapia , Saúde Mental , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Transtornos Mentais/psicologia , Recuperação da Saúde Mental , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Satisfação Pessoal , Recuperação de Função Fisiológica , Espiritualidade , Inquéritos e Questionários , Adulto Jovem
20.
PLoS One ; 12(6): e0179392, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28598998

RESUMO

OBJECTIVES: Severe mental illness (SMI) is associated with premature cardiovascular disease, prompting the UK primary care payment-for-performance system (Quality and Outcomes Framework, QOF) to incentivise annual physical health reviews. This study aimed to assess the QOF's impact on detection and treatment of cardiovascular risk factors in people with SMI. METHODS: A retrospective open cohort study of UK general practice was conducted between 1996 and 2014, using segmented logistic regression with 2004 and 2011 as break points, reflecting the introduction of relevant QOF incentives in these years. 67239 SMI cases and 359951 randomly-selected unmatched controls were extracted from the Clinical Practice Research Datalink (CPRD). RESULTS: There was strong evidence (p≤0.015) the 2004 QOF indicator (general health) resulted in an immediate increase in recording of elevated cholesterol (odds ratio 1.37 (95% confidence interval 1.24 to 1.51)); obesity (OR 1.21 (1.06 to 1.38)); and hypertension (OR 1.19 (1.04 to 1.38)) in the SMI group compared with the control group, which was sustained in subsequent years. Similar findings were found for diabetes, although the evidence was weaker (p = 0.059; OR 1.21 (0.99 to 1.49)). There was evidence (p<0.001) of a further, but unsustained, increase in recording of elevated cholesterol and obesity in the SMI group following the 2011 QOF indicator (cardiovascular specific). There was no clear evidence that the QOF indicators affected the prescribing of lipid modifying medications or anti-diabetic medications. CONCLUSION: Incentivising general physical health review for SMI improves identification of cardiovascular risk factors, although the additional value of specifically incentivising cardiovascular risk factor assessment is unclear. However, incentives do not affect pharmacological management of these risks.


Assuntos
Doenças Cardiovasculares/etiologia , Financiamento Pessoal , Transtornos Mentais/complicações , Transtornos Mentais/psicologia , Motivação , Reconhecimento Psicológico , Adulto , Idoso , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/terapia , Humanos , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Pessoa de Meia-Idade , Razão de Chances , Avaliação de Resultados em Cuidados de Saúde , Qualidade de Vida , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença , Fatores Socioeconômicos , Reino Unido/epidemiologia
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