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1.
Age Ageing ; 51(2)2022 02 02.
Artigo em Inglês | MEDLINE | ID: mdl-35134839

RESUMO

BACKGROUND: climate change is a health emergency. Central to addressing this is understanding the carbon footprint of our daily life and work, in order to reduce it effectively. The coronavirus disease of 2019 (COVID-19) pandemic has brought about rapid change to clinical practice, most notably in use of virtual clinics and personal protective equipment (PPE). AIM: to estimate the carbon footprint of a Geriatric Medicine clinic, including the effect of virtual consultation and PPE, in order to inform design of a service that addresses both the health of our patients and our environment. METHOD: data from the Greenhouse Gas Protocol, NHS Carbon Footprint Plus and UK Government were used to estimate the carbon emissions per consultation. Values were calculated for virtual and face-to-face contact and applied to actual clinics both before and during the COVID-19 pandemic. RESULTS: the carbon footprint of a face-to-face clinic consultation is 4.82 kgCO2e, most of which is patient travel, followed by staff travel and use of PPE. The footprint of a virtual consultation is 0.99 kgCO2e, most of which is staff travel, followed by data use.Using our hybrid model for a single session clinic reduced our annual carbon footprint by an estimated 200 kgCO2e, roughly equivalent to a surgical operation. DISCUSSION: the COVID-19 pandemic has made us deliver services differently. The environmental benefits seen of moving to a partially virtual clinic highlight the importance of thinking beyond reverting to 'business as usual'-instead deliberately retaining changes, which benefit the current and future health of our community.


Assuntos
COVID-19 , Idoso , Instituições de Assistência Ambulatorial , Pegada de Carbono , Humanos , Pandemias , SARS-CoV-2
2.
Lasers Surg Med ; 54(1): 138-151, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34541702

RESUMO

OBJECTIVES: Uncontrolled vulvar lichen sclerosus (VLS) is often associated with distressful symptoms of genital itch, irritation, and pain and can lead to a pathological process including anatomical changes, scarring, and an elevated risk of cancer in the genital area. First-line topical corticosteroid as monotherapy is frequently not adequate to fully suppress disease activity and control symptoms. This study evaluated the efficacy of fractional CO2 laser treatments as adjunctive therapy where recalcitrant VLS had been improved, but not adequately controlled, with topical corticosteroid treatment. Outcomes were evaluated up to 12 months after a series of CO2 laser treatments delivered via a fractional handpiece. MATERIALS AND METHODS: Women with a diagnosis of VLS supported by histologic findings on biopsy and/or clinical signs on physical examination received up to five monthly laser treatments. Subjects maintained existing topical corticosteroid and any exogenous hormone treatment during the study. Investigators assessed severity (0 = not present, 1 = mild, 2 = moderate, or 3 = severe) of clinical signs and architectural changes present before adjunctive study interventions and at follow-up visits. Subjects reported the presence of clinical symptoms and impact on quality of life on 4- or 5-point Likert scales. The validated Female Sexual Function Index (FSFI) was used to assess changes in sexual function. Four subjects were biopsied before adjunctive laser treatment and at follow-up. RESULTS: Twelve females, 11 postmenopausal, with a mean age of 57 ± 10 years received three to five monthly CO2 laser treatments. Significant improvement in all prominent clinical signs and architectural changes were reported at the 3- and 6-month follow-ups after the treatment series. Significant improvement was maintained at the 12-month follow-up, with 89% of subjects showing at least one-point improvement in elasticity compared to baseline; 86% in lichenification; 88% in sclerosis; and 80% in whitening and parchment-like skin. Labial fusion and the extent of disease improved in 50% of patients. Ulcerations present in three subjects at baseline resolved after treatment. Subjects reported 86% improvement in dyspareunia and 83% in skin tearing. Quality of life improved significantly after treatment (p < 0.01). The 6-month follow-up FSFI showed significant improvement in sexual function compared to baseline (p < 0.05), with a mean point improvement of 4.5. Histology findings after treatment showed some positive improvement, as a decrease in dermal hyalinized zone thickness. There were no treatment complications or adverse events related to the treatment. CONCLUSIONS: Fractional CO2 laser treatment outcomes showed improvement in predominant clinical signs and architectural changes in VLS recalcitrant to topical corticosteroid treatment. Adjunctive laser treatment relieved symptoms and improved quality of life as well as sexual function. Fractional CO2 laser treatment may provide an advanced treatment modality for the management of recalcitrant VLS with improved patient care and sustainable outcomes. Further study in a larger population and with CO2 laser treatment to both vulvar tissue and the vaginal canal should be explored.


Assuntos
Lasers de Gás , Líquen Escleroso Vulvar , Idoso , Dióxido de Carbono , Feminino , Humanos , Lasers de Gás/uso terapêutico , Pessoa de Meia-Idade , Qualidade de Vida , Esteroides , Líquen Escleroso Vulvar/tratamento farmacológico
3.
Cancer ; 126(17): 3896-3899, 2020 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-32463478

RESUMO

The treatment of patients with cancer who test positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses unique challenges. In this commentary, the authors describe the ethical rationale and implementation details for the creation of a novel, multidisciplinary treatment prioritization committee, including physicians, frontline staff, an ethicist, and an infectious disease expert. Organizational obligations to health care workers also are discussed. The treatment prioritization committee sets a threshold of acceptable harm to patients from decreased cancer control that is justified to reduce risk to staff. The creation of an ethical, consistent, and transparent decision-making process involving such frontline stakeholders is essential as departments across the country are faced with decisions regarding the treatment of SARS-CoV-2-positive patients with cancer.


Assuntos
Betacoronavirus , Infecções por Coronavirus/complicações , Atenção à Saúde/ética , Pessoal de Saúde/ética , Neoplasias/complicações , Pandemias/ética , Pneumonia Viral/complicações , Qualidade da Assistência à Saúde/ética , Assistência Ambulatorial/ética , Assistência Ambulatorial/organização & administração , COVID-19 , Tomada de Decisão Clínica , Infecções por Coronavirus/virologia , Atenção à Saúde/organização & administração , Pessoal de Saúde/organização & administração , Humanos , Neoplasias/radioterapia , Segurança do Paciente , Pneumonia Viral/virologia , Qualidade da Assistência à Saúde/organização & administração , SARS-CoV-2
4.
Environ Sci Technol ; 54(11): 6639-6650, 2020 06 02.
Artigo em Inglês | MEDLINE | ID: mdl-32353225

RESUMO

Lakes in the Midwest and Northeast United States are at risk of anthropogenic chloride contamination, but there is little knowledge of the prevalence and spatial distribution of freshwater salinization. Here, we use a quantile regression forest (QRF) to leverage information from 2773 lakes to predict the chloride concentration of all 49 432 lakes greater than 4 ha in a 17-state area. The QRF incorporated 22 predictor variables, which included lake morphometry characteristics, watershed land use, and distance to the nearest road and interstate. Model predictions had an r2 of 0.94 for all chloride observations, and an r2 of 0.86 for predictions of the median chloride concentration observed at each lake. The four predictors with the largest influence on lake chloride concentrations were low and medium intensity development in the watershed, crop density in the watershed, and distance to the nearest interstate. Almost 2000 lakes are predicted to have chloride concentrations above 50 mg L-1 and should be monitored. We encourage management and governing agencies to use lake-specific model predictions to assess salt contamination risk as well as to augment their monitoring strategies to more comprehensively protect freshwater ecosystems from salinization.


Assuntos
Ecossistema , Lagos , Cloretos , Monitoramento Ambiental , New England , Cloreto de Sódio
5.
Proc Natl Acad Sci U S A ; 114(17): 4453-4458, 2017 04 25.
Artigo em Inglês | MEDLINE | ID: mdl-28396392

RESUMO

The highest densities of lakes on Earth are in north temperate ecosystems, where increasing urbanization and associated chloride runoff can salinize freshwaters and threaten lake water quality and the many ecosystem services lakes provide. However, the extent to which lake salinity may be changing at broad spatial scales remains unknown, leading us to first identify spatial patterns and then investigate the drivers of these patterns. Significant decadal trends in lake salinization were identified using a dataset of long-term chloride concentrations from 371 North American lakes. Landscape and climate metrics calculated for each site demonstrated that impervious land cover was a strong predictor of chloride trends in Northeast and Midwest North American lakes. As little as 1% impervious land cover surrounding a lake increased the likelihood of long-term salinization. Considering that 27% of large lakes in the United States have >1% impervious land cover around their perimeters, the potential for steady and long-term salinization of these aquatic systems is high. This study predicts that many lakes will exceed the aquatic life threshold criterion for chronic chloride exposure (230 mg L-1), stipulated by the US Environmental Protection Agency (EPA), in the next 50 y if current trends continue.


Assuntos
Lagos/química , Salinidade , Cloreto de Sódio/química , Poluentes da Água/química , Estados Unidos , United States Environmental Protection Agency
6.
Mol Pharm ; 16(5): 2028-2036, 2019 05 06.
Artigo em Inglês | MEDLINE | ID: mdl-30875232

RESUMO

The rapid ascension of immune checkpoint blockade treatments has placed an emphasis on the need for viable, robust, and noninvasive imaging methods for immune checkpoint proteins, which could be of diagnostic value. Immunoconjugate-based positron emission tomography (immuno-PET) allows for sensitive and quantitative imaging of target levels and has promising potential for the noninvasive evaluation of immune checkpoint proteins. However, the advancement of immuno-PET is currently limited by available imaging tools, which heavily rely on full-length IgGs with Fc-mediated effects and are heterogeneous mixtures upon random conjugation with chelators for imaging. Herein, we have developed a site-specific αPD-L1 Fab conjugate with the chelator 1,4,7-triazacyclononane- N, N', N″-triacetic acid (NOTA), enabling radiolabeling for PET imaging, using the amber suppression-mediated genetic incorporation of unnatural amino acid (UAA), p-azidophenylalanine. This Fab conjugate is homogeneous and demonstrated tight binding toward the PD-L1 antigen in vitro. The radiolabeled version, 64Cu-NOTA-αPD-L1, has been employed in PET imaging to allow for effective visualization and mapping of the biodistribution of PD-L1 in two normal mouse models, including the capturing of different PD-L1 expression levels in the spleens of the different mouse types. Follow-up in vivo blocking studies and ex vivo fluorescent staining further validated specific tissue uptakes of the imaging agent. This approach illustrates the utility of UAA-based site-specific Fab conjugation as a general strategy for making sensitive PET imaging probes, which could facilitate the elucidation of the roles of a wide variety of immune checkpoint proteins in immunotherapy.


Assuntos
Antígeno B7-H1/metabolismo , Sítios de Ligação de Anticorpos , Imunoconjugados/farmacocinética , Tomografia por Emissão de Pósitrons/métodos , Traçadores Radioativos , Animais , Azidas/química , Antígeno B7-H1/imunologia , Quelantes/química , Simulação por Computador , Radioisótopos de Cobre/química , Compostos Heterocíclicos com 1 Anel/química , Imunoconjugados/imunologia , Fragmentos Fab das Imunoglobulinas/genética , Fragmentos Fab das Imunoglobulinas/imunologia , Imunoterapia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Nus , Mutação , Fenilalanina/análogos & derivados , Fenilalanina/química , Compostos Radiofarmacêuticos/farmacocinética , Receptor ErbB-2/imunologia , Receptor ErbB-2/metabolismo , Baço/metabolismo , Distribuição Tecidual
7.
Environ Sci Technol ; 53(10): 5661-5670, 2019 05 21.
Artigo em Inglês | MEDLINE | ID: mdl-31038305

RESUMO

Temporal variability of toxins produced by cyanobacteria in lakes is relatively unknown at time scales relevant to public health (i.e., hourly). In this study, a water quality monitoring buoy was outfitted with an automated water sampler taking preserved samples every 6 h for 68.75 days over a drinking water intake. A total of 251 samples were analyzed by tandem mass spectrometry for 21 cyanotoxin congeners in 5 classes producing 5020 data points. Microcystins (MCs) were the most abundant toxins measured (mean ± sd = 3.9 ± 3.3 µg/L) followed by cyanopeptolins (CPs) (1.1 ± 1.5 µg/L), anabaenopeptins (APs) (1.0 ± 0.6 µg/L), anatoxin-a (AT-A) (0.03 ± 0.06 µg/L), and microginin-690 (MG-690) (0.002 ± 0.01 µg/L). Advanced time series analyses uncovered patterns in cyanotoxin production. The velocity of cyanotoxin concentration varied from -0.7 to 0.9 µg/L/h with a maximum positive velocity just prior to peak toxin concentration during nonbloom periods. A backward-looking moving window of variance analysis detected major increases in cyanotoxin concentration and predicted the two greatest increases in MC. A wavelet analysis identified a significant ( p < 0.01) 2.8-4.2 day periodicity in toxin concentration over a ∼25 day period during peak toxin production, which is partially explained by easterly wind velocity ( R = -0.2, p < 0.05). Diversity in congener profiles was explored with principle component analysis showing that cyanotoxin dynamics followed a seasonal trajectory where toxin profiles were significantly clustered (ANOSIM R = 0.7, p < 0.05) on a daily basis. Variability in toxin profiles was strongly correlated with time ( R = -0.8, p < 0.001) as well as the C:N ratio of the toxin pool ( R = 0.17, p < 0.05). The methods employed here should be useful for uncovering patterns in cyanotoxin dynamics in other systems.


Assuntos
Toxinas Bacterianas , Cianobactérias , Toxinas Marinhas , Toxinas de Cianobactérias , Microcistinas
8.
J Great Lakes Res ; 44(5): 924-933, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30983692

RESUMO

Cyanobacterial harmful algal blooms (cyanoHABs) are a growing problem in freshwater systems worldwide. CyanoHABs are well documented in Green Bay, Lake Michigan but little is known about cyanoHAB toxicity. This study characterized the diversity and spatial distribution of toxic or otherwise bioactive cyanobacterial peptides (TBPs) in Green Bay. Samples were collected in 2014 and 2015 during three cruises at sites spanning the mouth of the Fox River north to Chambers Island. Nineteen TBPs were analyzed including 11 microcystin (MC) variants, nodularin, three anabaenopeptins, three cyanopeptolins and microginin-690. Of the 19 TBPs, 12 were detected in at least one sample, and 94% of samples had detectable TBPs. The most prevalent TBPs were MCRR and MCLR, present in 94% and 65% of samples. The mean concentration of all TBPs was highest in the Fox River and lower bay, however, the maximum concentration of all TBPs occurred in the same sample north of the lower bay. MCs were positively correlated with chlorophyll and negatively correlated with distance to the Fox River in all cruises along a well-established south-to-north trophic gradient in Green Bay. The mean concentration of MC in the lower bay across all cruises was 3.0 +/- 2.3 µg/L. Cyanopeptolins and anabaenopeptins did not trend with the south-north trophic gradient or varied by cruise suggesting their occurrence is driven by different environmental factors. Results from this study provides evidence that trends in TBP concentration differ by congener type over a trophic gradient.

9.
Mar Drugs ; 15(6)2017 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-28574457

RESUMO

Cyanobacteria are ubiquitous phototrophic bacteria that inhabit diverse environments across the planet. Seasonally, they dominate many eutrophic lakes impacted by excess nitrogen (N) and phosphorus (P) forming dense accumulations of biomass known as cyanobacterial harmful algal blooms or cyanoHABs. Their dominance in eutrophic lakes is attributed to a variety of unique adaptations including N and P concentrating mechanisms, N2 fixation, colony formation that inhibits predation, vertical movement via gas vesicles, and the production of toxic or otherwise bioactive molecules. While some of these molecules have been explored for their medicinal benefits, others are potent toxins harmful to humans, animals, and other wildlife known as cyanotoxins. In humans these cyanotoxins affect various tissues, including the liver, central and peripheral nervous system, kidneys, and reproductive organs among others. They induce acute effects at low doses in the parts-per-billion range and some are tumor promoters linked to chronic diseases such as liver and colorectal cancer. The occurrence of cyanoHABs and cyanotoxins in lakes presents challenges for maintaining safe recreational aquatic environments and the production of potable drinking water. CyanoHABs are a growing problem in the North American (Laurentian) Great Lakes basin. This review summarizes information on the occurrence of cyanoHABs in the Great Lakes, toxicological effects of cyanotoxins, and appropriate numerical limits on cyanotoxins in finished drinking water.


Assuntos
Toxinas Bacterianas/efeitos adversos , Toxinas Bacterianas/química , Cianobactérias/metabolismo , Água Potável/microbiologia , Lagos/microbiologia , Toxinas Marinhas/efeitos adversos , Toxinas Marinhas/química , Microcistinas/efeitos adversos , Microcistinas/química , Toxinas de Cianobactérias , Humanos , Nitrogênio/efeitos adversos , Fixação de Nitrogênio/efeitos dos fármacos , Fósforo/efeitos adversos
10.
J Great Lakes Res ; 43(3): 161-168, 2017 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-30034084

RESUMO

A comprehensive inventory of ecosystem services across the entire Great Lakes basin is currently lacking and is needed to make informed management decisions. A greater appreciation and understanding of ecosystem services, including both use and non-use services, may have avoided misguided resource management decisions in the past that have resulted in legacies inherited by future generations. Given the interest in ecosystem services and lack of a coherent approach to addressing this topic in the Great Lakes, a summit was convened involving 28 experts working on various aspects of ecosystem services in the Great Lakes. The invited attendees spanned a variety of social and natural sciences. Given the unique status of the Great Lakes as the world's largest collective repository of surface freshwater, and the numerous stressors threatening this valuable resource, timing was propitious to examine ecosystem services. Several themes and recommendations emerged from the summit. There was general consensus that 1) a comprehensive inventory of ecosystem services throughout the Great Lakes is a desirable goal but would require considerable resources; 2) more spatially and temporally intensive data are needed to overcome our data gaps, but the arrangement of data networks and observatories must be well-coordinated; 3) trade-offs must be considered as part of ecosystem services analyses; and 4) formation of a Great Lakes Institute for Ecosystem Services, to provide a hub for research, meetings, and training is desirable. Several challenges also emerged during the summit, which are discussed in the paper.

12.
Pract Radiat Oncol ; 14(2): 93-102, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37944748

RESUMO

PURPOSE: Oligometastatic disease has expanded the indications for nonspine bone stereotactic body radiation therapy (NSB SBRT). We investigated whether optical surface monitoring systems (OSMS) could enable tattoo-less setup and substitute for 2-dimensional/3-dimensional or cone beam computed tomography (CBCT)-based mid-imaging in NSB SBRT. METHODS AND MATERIALS: OSMS was incorporated in parallel with an existing workflow using pretreatment CBCT and 2-dimensional/3-dimensional kV/kV mid-imaging beginning November 2019. The ability of OSMS to detect out-of-tolerance (>2 mm/>2°) and commanded couch shifts was analyzed. A workflow incorporating OSMS reference captures, CBCT for pretreatment verification, and OSMS/triggered imaging (TI) for intrafraction monitoring was developed for rib/sternum SBRT beginning November 2021 and all NSB SBRT beginning February 2022. Treatment time and CBCT-related radiation dose between the OSMS and the non-OSMS intrafraction monitoring group was analyzed pre- and post-OSMS/TI workflow adoption. All fractions were analyzed through statistical process control with use of an XmR chart of treatment time per quarter from February 2019 to February 2023. Special cause rules were based on Institute for Healthcare Improvement criteria. RESULTS: From February 2019 to February 2023, 1993 NSB SBRT fractions were delivered, including 234 rib, 109 sternum, 214 ilium, and 682 multisite. Over 20 commanded shifts, OSMS could detect 2-mm shifts to within 0.4 mm 67% of the time and 0.8 mm 95% of the time. All NSB SBRT sites showed significant reductions in treatment time, including the greatest improvement in rib total treatment (21.6-13.4 minutes; P = 1.16 × 10-17) and beam time (7.9-3.2 minutes; P = 7.32 × 10-27). Significant reductions in CBCT-related radiation were also observed for several NSB sites. These process improvements were associated with OSMS adoption. CONCLUSIONS: Adoption of a novel NSB SBRT workflow incorporating OSMS/TI for bone intrafraction motion monitoring reduced treatment time and CBCT-related radiation exposure while also allowing for more continuous intrafraction motion monitoring for NSB SBRT. OSMS/TI enabled the transition to a tattoo-less workflow.


Assuntos
Radiocirurgia , Tatuagem , Humanos , Fluxo de Trabalho , Tomografia Computadorizada de Feixe Cônico , Instalações de Saúde , Planejamento da Radioterapia Assistida por Computador
13.
Sci Total Environ ; 902: 165891, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-37544441

RESUMO

Variations in molecular weight distributions of dissolved organic matter (DOM) and PARAFAC-derived fluorescent components were investigated along a transect in the seasonally hypereutrophic lower Fox River-Green Bay using the one-sample PARAFAC approach coupling flow field-flow fractionation for size-separation with fluorescence excitation-emission matrix (EEM) and PARAFAC analysis. Concentrations of dissolved organic carbon and nitrogen, chromophoric-DOM, specific UV absorbance at 254 nm, and humification index all decreased monotonically from river to open bay, showing a strong river-dominated DOM source and a dynamic change in DOM quality along the river-lake transect. The relative abundance of colloidal DOM (>1 kDa) derived from ultrafiltration exhibited minimal variation, averaging 71 ± 4 % of the bulk DOM, across the entire estuarine transect although the colloidal concentration decreased in general. Using the one-sample EEM-PARAFAC approach, the identified major fluorescent components were distinct between stations along the river-estuary-open bay continuum, with four components in river/upper-estuary but three components in open bay waters. Among the four common fluorescent components (C475, C410, C320 and C290), the most abundant and refractory humic-like component, C475, behaved conservatively and its relative abundance (%ΣFmax) remained fairly constant (50 ± 4 %) along the transect, while the semi-labile humic-like component, C410, consistently decreased from river to estuary and eventually vanished in open Green Bay. In contrast, the two autochthonous protein-like components (C320 and C290) increased from river to open bay along the trophic gradient. The new results presented here provide an improved understanding of the diverse and fluctuating characteristics in DOM composition, lability, and estuarine mixing behavior across the river-lake interface and demonstrate the efficacy of the one-sample PARAFAC approach.

14.
Int Health ; 15(Supplement_2): ii73-ii76, 2023 Dec 04.
Artigo em Inglês | MEDLINE | ID: mdl-38048376

RESUMO

Trachoma is a disease of the eye and the leading infectious cause of blindness worldwide. Years of repeated infections can cause in-turning of the lashes so that they rub against the eyeball, causing pain, discomfort and, if left untreated, blindness. This is known as trachomatous trichiasis (TT) and can be remedied by surgery. To improve oversight and reporting of TT outreach, Sightsavers developed a mobile phone application called the TT Tracker so that TT surgeons, assistants and supervisors can collect and analyse information about surgical outcomes and performance and determine when and where follow-up appointments are required. The TT Tracker is being used by seven national programmes. Examples of use and programme improvements from Nigeria, Benin and Senegal are discussed here.


Assuntos
Tracoma , Triquíase , Humanos , Tracoma/complicações , Triquíase/cirurgia , Triquíase/etiologia , Nigéria , Cegueira/complicações
15.
Int Health ; 14(Suppl 1): i64-i67, 2022 04 06.
Artigo em Inglês | MEDLINE | ID: mdl-35385869

RESUMO

Cataract is a leading cause of blindness in children worldwide. Blindness can be treated with effective surgery, but in low-resource settings this treatment can be difficult to access. In addition, positive outcomes of the surgery are heavily dependent on comprehensive postoperative care. To date in Nigeria and many other low-resource countries, robust electronic data-management systems that help facility teams to manage their patient data, especially when it comes to tracking children for follow-up visits after surgery, have either yet to be put into place or are in place but have yet to be refined to respond to the specific needs of eye care programs. Sightsavers has worked with multiple state ministries in Nigeria to set up and test a system that responds to those needs.


Assuntos
Extração de Catarata , Catarata , Cegueira/etiologia , Catarata/complicações , Catarata/terapia , Extração de Catarata/efeitos adversos , Criança , Gerenciamento de Dados , Humanos , Nigéria
16.
Vet Dermatol ; 22(6): 546-53, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21645141

RESUMO

Ear cleaning solutions are designed for repeated use, which raises the possibility for bacterial contamination leading to recurrent or persistent infectious otitis. The purpose of this study was to investigate the prevalence of bacterial contamination of commercial ear cleaners following routine home use in dogs and to describe the characteristics that are associated with contamination. Used ear cleaner bottles and information regarding their use were obtained from canine owners visiting veterinary dermatologists. Both the bottle applicator tips and the solution contents were cultured for aerobic bacteria. Bacterial contamination was present on 10% of the bottle tips and in 2% of the solutions. Isolated bacteria included Staphylococcus pseudintermedius, Bacillus spp., coagulase-negative Staphylococcus spp., Micrococcus spp. and Burkholderia cepacia. The contamination rate was significantly higher on the applicator tips than in the solutions (P = 0.0076). The applicator tip contamination rate was significantly higher in expired samples (17%) than in-date samples (4%; P = 0.0277). The bottle sizes were significantly larger for the samples with contaminated applicator tips compared with noncontaminated tips (P = 0.0455). The contamination rate was significantly higher when Tris-EDTA was an ingredient. Cleanliness of the bottle, contact with the ear canal and infection status of the ear at time of culture had no bearing on the contamination rate. In summary, with routine home use of commercial ear cleaners, pathogenic bacterial contamination is of minor concern. This concern may increase when expired products or larger bottles of ear cleaner are used and when Tris-EDTA is an ingredient.


Assuntos
Doenças do Cão/tratamento farmacológico , Contaminação de Equipamentos/estatística & dados numéricos , Otite Externa/veterinária , Soluções Farmacêuticas/uso terapêutico , Animais , Anti-Infecciosos Locais/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Bacillus/isolamento & purificação , Burkholderia cepacia/isolamento & purificação , Ceruminolíticos/uso terapêutico , Quelantes , Doenças do Cão/microbiologia , Cães , Embalagem de Medicamentos , Ácido Edético , Micrococcus/isolamento & purificação , Otite Externa/tratamento farmacológico , Otite Externa/microbiologia , Staphylococcus/isolamento & purificação , Tensoativos/uso terapêutico
17.
Water Res ; 196: 117025, 2021 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-33765499

RESUMO

Phosphorus (P) loadings to the Great Lakes have been regulated for decades, but re-eutrophication and seasonal hypoxia have recently been increasingly reported. It is of paramount importance to better understand the fate, transformation, and biogeochemical cycling processes of different P species across the river-lake interface. We report here results on chemical speciation of P in the seasonally hypoxic Fox River-Green Bay system and variations in sources and partitioning of P species along the aquatic continuum. During midsummer when productivity is generally high, phosphate and dissolved organic P (DOP) were the major species in river water while particulate-organic-P predominated in open bay waters, showing a dynamic change in the chemical speciation of P along the river-bay transect with active transformations between inorganic and organic P and between colloidal and particulate phases. Colloidal organic P (COP, >1 kDa) comprised 33‒65% of the bulk DOP, while colloidal inorganic P was generally insignificant and undetectable especially in open bay water. Sources of COP changed from mainly allochthonous in the Fox River, having mostly smaller sized colloids (1-3 kDa) and a lower organic carbon to phosphorus (C/P) ratio, to predominantly autochthonous in open bay waters with larger sized colloids (>10 kDa) and a higher organic C/P ratio. The observed high apparent distribution coefficients (Kd) of P between dissolved and particulate phases and high-abundant autochthonous colloidal and particulate organic P in the hypereutrophic environment suggest that, in addition to phosphate, colloidal/particulate organic P may play a critical role in the biogeochemical cycling of P and the development of seasonal hypoxia.


Assuntos
Estuários , Poluentes Químicos da Água , Monitoramento Ambiental , Eutrofização , Fósforo/análise , Rios , Poluentes Químicos da Água/análise
18.
Radiat Oncol ; 16(1): 224, 2021 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-34798879

RESUMO

BACKGROUND: We aim to assess the risks associated with total body irradiation (TBI) delivered using a commercial dedicated Co-60 irradiator, and to evaluate inter-institutional and inter-professional variations in the estimation of these risks. METHODS: A failure mode and effects analysis (FMEA) was generated using guidance from the AAPM TG-100 report for quantitative estimation of prospective risk metrics. Thirteen radiation oncology professionals from two institutions rated possible failure modes (FMs) for occurrence (O), severity (S), and detectability (D) indices to generate a risk priority number (RPN). The FMs were ranked by descending RPN value. Absolute gross differences (AGD) in resulting RPN values and Jaccard Index (JI; for the top 20 FMs) were calculated. The results were compared between professions and institutions. RESULTS: A total of 87 potential FMs (57, 15, 10, 3, and 2 for treatment, quality assurance, planning, simulation, and logistics respectively) were identified and ranked, with individual RPN ranging between 1-420 and mean RPN values ranging between 6 and 74. The two institutions shared 6 of their respective top 20 FMs. For various institutional and professional comparison pairs, the number of common FMs in the top 20 FMs ranged from 6 to 13, with JI values of 18-48%. For the top 20 FMs, the trend in inter-professional variability was institution-specific. The mean AGD values ranged between 12.5 and 74.5 for various comparison pairs. AGD values differed the most for medical physicists (MPs) in comparison to other specialties i.e. radiation oncologists (ROs) and radiation therapists (RTs) [MPs-vs-ROs: 36.3 (standard deviation SD = 34.1); MPs-vs-RTs: 41.2 (SD = 37.9); ROs-vs-RTs: 12.5 (SD = 10.8)]. Trends in inter-professional AGD values were similar for both institutions. CONCLUSION: This inter-institutional comparison provides prospective risk analysis for a new treatment delivery unit and illustrates the institution-specific nature of FM prioritization, primarily due to operational differences. Despite being subjective in nature, the FMEA is a valuable tool to ensure the identification of the most significant risks, particularly when implementing a novel treatment modality. The creation of a bi-institutional, multidisciplinary FMEA for this unique TBI technique has not only helped identify potential risks but also served as an opportunity to evaluate clinical and safety practices from the perspective of both multiple professional roles and different institutions.


Assuntos
Radioisótopos de Cobalto/uso terapêutico , Neoplasias/radioterapia , Variações Dependentes do Observador , Radio-Oncologistas/normas , Medição de Risco/métodos , Irradiação Corporal Total/métodos , Análise do Modo e do Efeito de Falhas na Assistência à Saúde , Humanos , Equipe de Assistência ao Paciente , Estudos Prospectivos , Controle de Qualidade
19.
Gates Open Res ; 5: 153, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34934907

RESUMO

Background: The achievement of neglected tropical diseases (NTDs) program goals depends on numerous factors, including the ability of national programs to use high-quality, timely data to inform their decision-making and program delivery. This paper presents a use case analysis of the routine data used by national NTD programs targeting lymphatic filariasis, onchocerciasis, schistosomiasis, soil-transmitted helminthiasis, and trachoma. Methods: The use cases were developed through a combination of secondary and primary research focused on both global trends and deep dives into Burkina Faso, Ethiopia, and Tanzania. Results were refined through a stakeholder convening and the final eight use cases were determined through iteration and prioritization with stakeholders. Results: Eight use cases were developed: improve treatment register data quality, strengthen supervision of drug distributors during mass drug administration (MDA), generate accurate community-level population data for MDAs, create and manage an accurate inventory of drugs, meet district coverage targets during MDA campaigns, feedback and performance to sub-district teams, feedback on performance to sub-national teams, and national-level program use of data for evaluation and decision making. Each use case identifies key actors and their data-related needs and critical challenges, defines the current and desired state, and articulates the profile of a solution (digital and non-digital) needed to complete the use case. Conclusion: The systematic strengthening of data use for decision-making in NTD programs is key for reaching the 2030 Roadmap goals. Integrated together, the presented use cases, when translated into action using appropriate and innovative solutions, can help to ensure that accurate and timely data are present at every step of a program and empower countries to use these data to make program decisions.

20.
Appetite ; 55(3): 512-21, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20832439

RESUMO

Breakfast has psychological and nutritional benefits due to physiological mechanisms and expectations about health impact. Beliefs people hold about calories in food can adversely affect mood and body-image satisfaction and such adverse reactions can be predicted by body mass index. The objectives were to test the effect of consuming isocaloric breakfasts, appearing different in calorie content, on appetite, mood and body-image satisfaction, and to assess impact on daily nutrient intake. One-hundred-and-twenty-three women were randomly assigned to eat a cereal or muffin breakfast which "appeared" different in calorie content while unaware they were isocaloric. Participants estimated calories of breakfast, appetite, mood, and body-image satisfaction on a daily basis for seven-days. The cereal breakfast was perceived to be lower in calories, made participants fuller, happier, relaxed, and more satisfied about weight and body compared to the muffin breakfast. Differences in estimated daily fibre and micronutrient intake were compatible with the design. Breakfasts were isocaloric yet the cereal breakfast was rated lower in calories and produced more positive psychological reactions. This evidence indicates the power of perceptions of foods to influence important attributes of health and well-being which could be valuable in dietary interventions where mood and body image satisfaction affect outcome.


Assuntos
Afeto , Imagem Corporal , Ingestão de Energia , Comportamento Alimentar/psicologia , Obesidade/prevenção & controle , Adulto , Apetite , Peso Corporal , Fibras na Dieta/administração & dosagem , Grão Comestível , Feminino , Felicidade , Humanos , Micronutrientes/administração & dosagem , Obesidade/psicologia , Satisfação Pessoal , Valores de Referência , Relaxamento , Saciação
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