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1.
Int Urogynecol J ; 35(2): 327-332, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37659003

RESUMO

INTRODUCTION AND HYPOTHESIS: Pelvic organ prolapse is a common problem affecting women, but there is currently a lack of research focusing on patient experience of pessary changes. This study was aimed at capturing the patient perspective of pessary changes and formally assessing pain during pessary removal and insertion. METHODS: A service evaluation request was granted by South Tees Hospitals NHS Trust. Patients undergoing pessary change (ring, shelf, or Gellhorn) in gynaecology outpatient clinics over a 6-month period were asked to rate their pain scores on a ten-point numerical pain-rating scale. Other associated data were collected. RESULTS: Out of 213 women, 58.2% reported that pessary removal was more painful than insertion, 30.5% reported equal pain, and 10.8% reported that insertion was more painful than removal. Pain scores were significantly higher for removal (mean 4.37, median 4, IQR 4-7) than for insertion (mean 2.66, median 2, IQR 2-4, p <0.001). Ring pessaries were significantly less painful to both remove and insert than shelf and Gellhorn pessaries. Smaller pessaries were more painful to both remove and insert. There was no significant difference in pain scores reported by those with or without diagnosed vulval conditions. CONCLUSIONS: Pessary removal causes most women moderate pain, which should be communicated to patients beforehand. Ring pessaries are significantly less painful to change than other pessary types. Clinicians should consider pain as a factor in their decision-making surrounding pessary choice and when counselling patients. Future research should focus on ways to reduce pain during pessary removal.


Assuntos
Instituições de Assistência Ambulatorial , Pessários , Humanos , Feminino , Gravidez , Pessários/efeitos adversos , Colpotomia , Dor/etiologia , Avaliação de Resultados da Assistência ao Paciente
2.
J Public Health (Oxf) ; 46(2): 277-285, 2024 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-38291949

RESUMO

BACKGROUND: Individuals with low socio-economic status (SES) have disproportionate rates of cardio- vascular disease (CVD) but poorer engagement with preventative health. This study aimed to compare characteristics of individuals with and without hyperlipidaemia and describe their health behaviours. METHODS: A mixed-methods study between January and December 2022. Patients aged ≥40 years using the ambulance service with blood pressure of ≥140/90 had their total cholesterol measured using a point of care device. Data including blood pressure, smoking status, National Early Warning Score 2 and clinical frailty scale (CFS) were analysed. RESULTS: Of 203 patients (59% female, mean age 65.7 years), 115 (56.7%) had total cholesterol ≥5.1 mmol/L. Thirty patients (14.8%) sought treatment and received either statins (n = 9; 4.4%), dietary modification (n = 7; 3.4%) or no further intervention (n = 14; 6.9%), whilst 85 patients (41.9%) took no further action. Lower CFS (OR 0.53 [0.31-0.93]) and higher total cholesterol (OR 2.07 [1.03-2.76]) predicted seeking further management. SES was not associated with hyperlipidaemia or likelihood of seeking further management, rather this was dictated by competing co-morbidity, poor health literacy and digital divide. CONCLUSIONS: Undiagnosed hyperlipidaemia exists in patients using the ambulance service, irrespective of SES. Individual and healthcare system factors prevent engagement in cholesterol lowering behaviours.


Assuntos
Ambulâncias , Humanos , Feminino , Masculino , Idoso , Pessoa de Meia-Idade , Ambulâncias/estatística & dados numéricos , Colesterol/sangue , Estudos de Coortes , Hipercolesterolemia/epidemiologia , Adulto , Disparidades nos Níveis de Saúde , Comportamentos Relacionados com a Saúde
3.
N Engl J Med ; 382(8): 697-705, 2020 02 20.
Artigo em Inglês | MEDLINE | ID: mdl-31860793

RESUMO

BACKGROUND: The causative agents for the current national outbreak of electronic-cigarette, or vaping, product use-associated lung injury (EVALI) have not been established. Detection of toxicants in bronchoalveolar-lavage (BAL) fluid from patients with EVALI can provide direct information on exposure within the lung. METHODS: BAL fluids were collected from 51 patients with EVALI in 16 states and from 99 healthy participants who were part of an ongoing study of smoking involving nonsmokers, exclusive users of e-cigarettes or vaping products, and exclusive cigarette smokers that was initiated in 2015. Using the BAL fluid, we performed isotope dilution mass spectrometry to measure several priority toxicants: vitamin E acetate, plant oils, medium-chain triglyceride oil, coconut oil, petroleum distillates, and diluent terpenes. RESULTS: State and local health departments assigned EVALI case status as confirmed for 25 patients and as probable for 26 patients. Vitamin E acetate was identified in BAL fluid obtained from 48 of 51 case patients (94%) in 16 states but not in such fluid obtained from the healthy comparator group. No other priority toxicants were found in BAL fluid from the case patients or the comparator group, except for coconut oil and limonene, which were found in 1 patient each. Among the case patients for whom laboratory or epidemiologic data were available, 47 of 50 (94%) had detectable tetrahydrocannabinol (THC) or its metabolites in BAL fluid or had reported vaping THC products in the 90 days before the onset of illness. Nicotine or its metabolites were detected in 30 of 47 of the case patients (64%). CONCLUSIONS: Vitamin E acetate was associated with EVALI in a convenience sample of 51 patients in 16 states across the United States. (Funded by the National Cancer Institute and others.).


Assuntos
Lesão Pulmonar Aguda/patologia , Líquido da Lavagem Broncoalveolar/química , Sistemas Eletrônicos de Liberação de Nicotina , Vaping/efeitos adversos , Vitamina E/análise , Lesão Pulmonar Aguda/etiologia , Adolescente , Adulto , Idoso , Fumar Cigarros , Óleo de Coco/análise , Feminino , Humanos , Limoneno/análise , Masculino , Pessoa de Meia-Idade , Estados Unidos , Adulto Jovem
4.
Alzheimers Dement ; 19(2): 391-404, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-35416404

RESUMO

We propose the hypothesis that small high-density lipoprotein (HDL) particles reduce the risk of Alzheimer's disease (AD) by virtue of their capacity to exchange lipids, affecting neuronal membrane composition and vascular and synaptic functions. Concentrations of small HDLs in cerebrospinal fluid (CSF) and plasma were measured in 180 individuals ≥60 years of age using ion mobility methodology. Small HDL concentrations in CSF were positively associated with performance in three domains of cognitive function independent of apolipoprotein E (APOE) ε4 status, age, sex, and years of education. Moreover, there was a significant correlation between levels of small HDLs in CSF and plasma. Further studies will be aimed at determining whether specific components of small HDL exchange across the blood, brain, and CSF barriers, and developing approaches to exploit small HDLs for therapeutic purposes.


Assuntos
Doença de Alzheimer , Humanos , Doença de Alzheimer/líquido cefalorraquidiano , Apolipoproteínas E , Apolipoproteína E4 , Encéfalo , Cognição , Peptídeos beta-Amiloides/líquido cefalorraquidiano
5.
Cochrane Database Syst Rev ; 11: CD013678, 2021 11 08.
Artigo em Inglês | MEDLINE | ID: mdl-34748208

RESUMO

BACKGROUND: Lamellar macular holes (LMHs) are small, partial-thickness defects of the macula defined by characteristic features on optical coherence tomography (OCT), including a newly recognised type of epiretinal membrane termed 'epiretinal proliferation'. There may be a rationale to recommend surgery for individuals with LMHs, particularly those with functional or anatomical deterioration, or poor baseline vision causing significant disability, to stabilise the LMH and prevent further visual deterioration; however, there is currently no evidence-based consensus. OBJECTIVES: To assess the effect of surgical interventions on post-operative visual and anatomical outcomes in people with a confirmed LMH. SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, Scopus SciVerse, ISRCTN registry, US National Institutes of Health Ongoing Trials Register, ClinicalTrials.gov and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP). We also searched reference lists of included trials to identify other eligible trials which our search strategy may have missed. The date of the search was 20 July 2021. SELECTION CRITERIA: We included randomised controlled trials (RCTs) involving participants with a confirmed LMH diagnosis which reported one or more surgical intervention(s), alone or in combination, in at least one arm of the RCT. DATA COLLECTION AND ANALYSIS: We used standard methods as expected by Cochrane. Two study authors independently extracted data and assessed the risk of bias for included trials. Trial authors were contacted for further information and clarification. MAIN RESULTS: A single RCT was eligible for inclusion. Thirty-six participants were randomised in a 2:1 ratio; 24 were allocated to undergo surgery (pars plana vitrectomy, peeling of the epiretial proliferation followed by fovea-sparing removal of the internal limiting membrane) and 12 (10 following two participant dropouts) to observation. Overall, the certainty of the evidence was low for all outcomes due to selection and detection bias, and the low number of participants enrolled in the study which may affect the accuracy of results and reliability of conclusions. At six-month follow-up, change in vision was better in the surgery group (-0.27 logMAR improvement) than observation (0.02 worsening) (mean difference (MD): -0.29 logMAR, 95% confidence intervals (CI): -0.33 to -0.25). Central retinal thickness increased in the surgery group over 6 months 126 µm increase) compared with observation group (decrease by 11µm) (MD: 137 µm, 95% CI: 125.87 µm to 148.13 µm). Finally, at six-month follow-up, retinal sensitivity was better in the surgery group (3.03 dB increase) compared with the observation group (0.06 dB decrease) (MD: 3.09 dB, 95% CI: 2.07 to 4.11 dB). Vision-related quality of life and metamorphopsia were not reported. No adverse outcomes or complications were reported in the study, however, authors could not provide information on whether any individuals developed deterioration in vision of 0.2 logMAR or worse. AUTHORS' CONCLUSIONS: The included single trial demonstrated improvements in visual and anatomical outcome measures for participants with a LMH who underwent surgery compared with observation only. Therefore, we can conclude that participants who undergo surgery may achieve superior post-operative best corrected visual acuity and anatomical outcomes compared with observation only. However, the results of a single and small RCT provides limited evidence to support or refute surgery as an effective management option for LMHs. Future RCTs with a larger number of participants and with fewer methodological limitations and biases are necessary to inform future clinical practice.


Assuntos
Macula Lutea , Perfurações Retinianas , Humanos , Macula Lutea/diagnóstico por imagem , Macula Lutea/cirurgia , Ensaios Clínicos Controlados Aleatórios como Assunto , Retina , Perfurações Retinianas/cirurgia , Acuidade Visual , Vitrectomia
6.
Int Urogynecol J ; 32(12): 3131-3141, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34115164

RESUMO

INTRODUCTION AND HYPOTHESIS: The practice of histopathological assessment of the uterus following hysterectomy for benign indications including pelvic organ prolapse (POP) surgery is common and often routine. While pathology is not anticipated, the finding of pathology requiring further action is always a concern, in particular CIN (cervical intraepithelial neoplasia) or cervical/uterine malignancy. We aimed to perform a systematic review to understand the prevalence of actionable uterine and cervical pathology in hysterectomy specimens performed for POP. METHODS: A literature search was performed in January 2020 of MEDLINE, Embase and CINAHL using the Healthcare Databases Advanced Search platform. Included studies reported CIN and/or uterine/cervical malignancy in histological assessment of hysterectomy specimens performed purely for POP. Meta-analysis of prevalence was performed using the MetaXL ( www.epigear.com ) add-in for Microsoft Excel. RESULTS: Six hundred seventy-seven records were identified, out of which 34 studies were eligible. Overall prevalence (95% confidence interval [CI]) of endometrial cancer in 33 studies was 0.004 (0.003-0.006), I2 = 41%, number needed to treat (NNT) 1:250. Total actionable uterine pathology was 0.005 (0.003-0.006) in 33 studies, I2 = 35%, NNT = 1:200. Overall prevalence of cervical cancer in 19 papers was 0.001 (0.000-0.002), I2 = 18%, NNT = 1:1000. In 16 studies the overall prevalence of CIN was 0.013 (0.001-0.033), I2 = 95%, NNT = 1:77. Prevalence of total actionable pathology was 0.013 (0.006-0.0023), I2 = 86%, NNT = 1:77. CONCLUSION: The risk of actionable pathology is low, but not negligible. The variation between populations is wide. The prevalence of finding such pathology supports the routine practice of sending all hysterectomy specimens performed for POP for histological assessment.


Assuntos
Neoplasias do Endométrio , Prolapso de Órgão Pélvico , Feminino , Humanos , Histerectomia , Prolapso de Órgão Pélvico/epidemiologia , Prolapso de Órgão Pélvico/cirurgia , Prevalência , Útero/cirurgia
7.
Retina ; 40(11): 2127-2133, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31860521

RESUMO

PURPOSE: Muller cells seem to be important in maintaining foveal morphology through connections between their foot processes and the internal limiting membrane (ILM). Internal limiting membrane peeling causes Muller cell trauma. We hypothesized that leaving a rim of unpeeled ILM around idiopathic macular holes undergoing vitrectomy surgery would improve postoperative foveal morphology and vision. METHODS: Prospective pilot study of fovea-sparing ILM peeling in a consecutive cohort of patients with macular holes over a 12-month period. Spectral-domain optical coherence tomography and Early Treatment Diabetic Retinopathy Study letters best-corrected visual acuity were assessed preoperatively and postoperatively, and foveal morphology and metamorphopsia postoperatively. The foveal sparing group was compared with a second consecutive cohort who received standard ILM peeling (control group). RESULTS: Thirty-four eyes of 34 patients were included in each group. Groups showed no significant preoperative differences. 34/34 holes were successfully closed with surgery in the foveal sparing group and 32/34 in the control group. The foveal sparing group showed better postoperative best-corrected visual acuity (67.7 vs. 63.8, P = 0.003) and best-corrected visual acuity improvement (25.1 vs. 20.2, P = 0.03). The foveal sparing group demonstrated thicker minimum foveal thickness (211 vs. 173 µm, P = 0.002) and less steep foveal depression (158 vs. 149, P = 0.002). CONCLUSION: Preserving nonpeeled ILM around macular holes resulted in a high closure rate, improved foveal morphology, and better postoperative best-corrected visual acuity. An appropriately powered randomized controlled study is warranted.


Assuntos
Membrana Basal/cirurgia , Fóvea Central/fisiopatologia , Perfurações Retinianas/cirurgia , Acuidade Visual/fisiologia , Idoso , Idoso de 80 Anos ou mais , Membrana Basal/fisiopatologia , Feminino , Fóvea Central/anatomia & histologia , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Estudos Prospectivos , Recuperação de Função Fisiológica , Perfurações Retinianas/fisiopatologia , Vitrectomia/métodos
8.
Ophthalmologica ; 243(6): 426-435, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32623429

RESUMO

PURPOSE: We hypothesised that cleaning the internal limiting membrane (ILM) with a flexible nitinol loop following diabetic vitrectomy without peeling may reduce the common occurrence of postoperative epiretinal membrane (ERM) formation. METHODS: Consecutive patients undergoing vitrectomy for proliferative diabetic retinopathy by one surgeon from 2015 to 2019 were studied and divided into 2 cohorts: the control group underwent standard surgery, and the ILM clean group underwent additional cleaning of the macular retina using a flexible nitinol loop after vitrectomy. Masked comparison of ERM on optical coherence tomography was performed at 3 months, and visual acuity (VA) was measured until 12 months postoperatively. RESULTS: Baseline demographics, clinical features, and protein levels were similar between cohorts. The ILM clean group (n = 56) had fewer clinically significant ERM than the control group (n = 50; 4 vs. 20%; p = 0.01), and a significantly lower proportion of the ILM clean group required revision surgery (2 vs. 14%; p = 0.02). VA in the ILM clean group was significantly better than in the control group at 3 months (0.35 vs. 0.50 logMAR; p = 0.02) but not at 12 months (0.34 vs. 0.43 logMAR; p = 0.17). CONCLUSION: ILM cleaning with a flexible nitinol loop following diabetic vitrectomy resulted in significant reduction in ERM formation and reduced necessity for revision surgery. There was significant improvement in VA at 3 months but not over a longer follow-up.


Assuntos
Diabetes Mellitus , Retinopatia Diabética , Membrana Epirretiniana , Vitrectomia , Membrana Basal , Retinopatia Diabética/terapia , Membrana Epirretiniana/cirurgia , Humanos , Retina , Estudos Retrospectivos , Tomografia de Coerência Óptica
9.
MMWR Morb Mortal Wkly Rep ; 68(45): 1040-1041, 2019 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-31725707

RESUMO

CDC, the Food and Drug Administration (FDA), state and local health departments, and multiple public health and clinical partners are investigating a national outbreak of e-cigarette, or vaping, product use-associated lung injury (EVALI). Based on data collected as of October 15, 2019, 86% of 867 EVALI patients reported using tetrahydrocannabinol (THC)-containing products in the 3 months preceding symptom onset (1). Analyses of THC-containing product samples by FDA and state public health laboratories have identified potentially harmful constituents in these products, such as vitamin E acetate, medium chain triglyceride oil (MCT oil), and other lipids (2,3) (personal communication, D.T. Heitkemper, FDA Forensic Chemistry Center, November 2019). Vitamin E acetate, in particular, might be used as an additive in the production of e-cigarette, or vaping, products; it also can be used as a thickening agent in THC products (4). Inhalation of vitamin E acetate might impair lung function (5-7).


Assuntos
Líquido da Lavagem Broncoalveolar/química , Surtos de Doenças , Lesão Pulmonar/epidemiologia , Vaping/efeitos adversos , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estados Unidos/epidemiologia , Adulto Jovem
10.
Retina ; 39(7): 1392-1398, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29517583

RESUMO

PURPOSE: To investigate the association between the vertical elevation of the external limiting membrane (ELM) and visual outcome in patients undergoing surgery for idiopathic full-thickness macular hole. METHODS: Retrospective observational study of a consecutive cohort of patients undergoing vitrectomy to treat macular hole. The greatest vertical height of the central ELM above the retinal pigment epithelium (ELM height) was measured on spectral domain optical coherence tomography preoperatively. The relationship of ELM height to other preoperative and postoperative variables, including macular hole width and height, and visual acuity was analyzed. RESULTS: Data from 91 eyes of 91 patients who had undergone successful hole closure were included. The mean ELM height was 220 µm (range 100-394). There were significant correlations between the ELM height and the diameter of the hole, hole height, and worsening preoperative visual acuity. For holes less than 400 µm in width, better postoperative visual acuity was significantly predicted by a lower ELM height. CONCLUSION: The ELM height varies widely in idiopathic macular hole. It is higher in eyes where the hole is wider and also when the hole itself is higher. For holes of less than 400 µm in width, a lower ELM height is a strong independent predictor of a good postoperative outcome.


Assuntos
Membrana Basal/cirurgia , Tamponamento Interno/métodos , Fóvea Central/patologia , Perfurações Retinianas/cirurgia , Tomografia de Coerência Óptica/métodos , Acuidade Visual , Vitrectomia/métodos , Idoso , Idoso de 80 Anos ou mais , Membrana Basal/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Período Perioperatório , Prognóstico , Perfurações Retinianas/diagnóstico , Estudos Retrospectivos
11.
Health Res Policy Syst ; 17(1): 10, 2019 Jan 28.
Artigo em Inglês | MEDLINE | ID: mdl-30691504

RESUMO

BACKGROUND: While the European Union is striving to become the 'Innovation Union', there remains a lack of quantifiable indicators to compare and benchmark regional innovation clusters. To address this issue, a HealthTIES (Healthcare, Technology and Innovation for Economic Success) consortium was funded by the European Union's Regions of Knowledge initiative, research and innovation funding programme FP7. HealthTIES examined whether the health technology innovation cycle was functioning differently in five European regional innovation clusters and proposed regional and joint actions to improve their performance. The clusters included BioCat (Barcelona, Catalonia, Spain), Medical Delta (Leiden, Rotterdam and Delft, South Holland, Netherlands), Oxford and Thames Valley (United Kingdom), Life Science Zürich (Switzerland), and Innova Észak-Alföld (Debrecen, Hungary). METHODS: Appreciation of the 'triple helix' of university-industry-government innovation provided the impetus for the development of two quantifiable innovation indexes and related indicators. The HealthTIES H-index is calculated for disease and technology platforms based on the h-index proposed by Hirsch. The HealthTIES Innovation Index is calculated for regions based on 32 relevant quantitative and discriminative indicators grouped into 12 categories and 3 innovation phases, namely 'Input' (n = 12), 'Innovation System' (n = 9) and 'Output' (n = 11). RESULTS: The HealthTIES regions had developed relatively similar disease and technology platform profiles, yet with distinctive strengths and weaknesses. The regional profiles of the innovation cycle in each of the three phases were surprisingly divergent. Comparative assessments based on the indicators and indexes helped identify and share best practice and inform regional and joint action plans to strengthen the competitiveness of the HealthTIES regions. CONCLUSION: The HealthTIES indicators and indexes provide useful practical tools for the measurement and benchmarking of university-industry-government innovation in European medical and life science clusters. They are validated internally within the HealthTIES consortium and appear to have a degree of external prima facie validity. Potentially, the tools and accompanying analyses can be used beyond the HealthTIES consortium to inform other regional governments, researchers and, possibly, large companies searching for their next location, analyse and benchmark 'triple helix' dynamics within their own networks over time, and to develop integrated public-private and cross-regional research and innovation strategies in Europe and beyond.


Assuntos
Benchmarking , Disciplinas das Ciências Biológicas , Pesquisa Biomédica , Governo , Indústrias , Universidades , Tecnologia Biomédica , Atenção à Saúde , Europa (Continente) , União Europeia , Humanos , Conhecimento , Tecnologia
12.
Ophthalmology ; 125(11): 1757-1764, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-29887331

RESUMO

PURPOSE: To identify the incidence, presenting features, treatment, and clinical course of optic disc pit maculopathy (ODPM) in the United Kingdom (UK). DESIGN: A 2-year nationwide prospective population-based study. SUBJECTS: All new incident cases of ODPM presenting to UK ophthalmologists using the British Ophthalmic Surveillance Unit monthly reporting system. METHODS: All reporting ophthalmologists were sent an initial questionnaire requesting data on previous medical and ophthalmic history, presentation details, investigation findings, and management. A further questionnaire was sent at 12 months post diagnosis to ascertain further outcome data. MAIN OUTCOME MEASURES: Visual acuity at initial presentation, at 1 year, and after any intervention. Foveal involvement and optical coherence tomography (OCT) findings, including retinal layers affected, and the location and size of the optic disc pit. Management, including observation, vitrectomy, and associated procedures. RESULTS: There were 74 confirmed new cases, giving an annual incidence of approximately 1 per 2 million. Complete data were available on 70 patients (70 eyes) at baseline and 68 after 1 year. There were 35 (50%) female patients with a mean age of 35 years (range, 3-82 years). Visual acuity at baseline ranged from 6/5 to hand movements. In 43 patients (61%) subretinal fluid (SRF) was present, whereas 27 (39%) had intraretinal fluid only. The presence of SRF was associated with worse vision and foveal involvement. Of the 53 eyes initially observed with 1-year follow-up, 10 (19%) deteriorated and 9 (16%) improved on OCT; eyes with SRF were more likely to worsen and those without SRF were more likely to improve. Fifteen of the 70 patients (21%) at baseline had primary surgery and a further 10 had deferred surgery within 1 year of presentation; 19 of these 25 eyes (76%) showed anatomic success with a dry fovea at 1 year of follow-up, and 15 (60%) had a greater than 0.1 logMAR improvement in visual acuity. CONCLUSION: The incidence and presenting features of ODPM were defined. Patients with SRF had worse vision and were more likely to deteriorate than patients with intraretinal fluid only. Surgery was anatomically successful in 75% of cases. Patients without SRF tended to remain stable with observation.


Assuntos
Anormalidades do Olho/epidemiologia , Disco Óptico/anormalidades , Doenças Retinianas/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Anormalidades do Olho/diagnóstico , Anormalidades do Olho/terapia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Vigilância em Saúde Pública , Doenças Retinianas/diagnóstico , Doenças Retinianas/terapia , Inquéritos e Questionários , Tomografia de Coerência Óptica , Reino Unido/epidemiologia
13.
Anal Bioanal Chem ; 409(5): 1379-1386, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27866257

RESUMO

Antibiotic resistance continues to contribute significantly to morbidity and mortality across the world. Developing new tests for antibiotic-resistant bacteria is a core action to combat resistant infections. We describe a method that uses phage amplification detection (PAD) combined with matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) to rapidly identify Staphylococcus aureus and determine phenotypic susceptibility to cefoxitin. Samples tested for S. aureus are incubated together with bacteriophage in the presence and absence of cefoxitin and subjected to rapid trypsin digestion followed by MALDI-MS analysis. Tryptic peptides derived from amplified phage proteins can be detected by MALDI-MS, as validated by time-of-flight (TOF)/TOF analysis of each peptide combined with database searching. Methicillin-resistant S. aureus show significant phage amplification in the presence of cefoxitin, while methicillin-sensitive S. aureus show no phage amplification relative to a no-antibiotic control. We also show that PAD methodology can be implemented on an FDA-approved commercial MALDI-MS bacterial identification system to identify S. aureus and determine antibiotic susceptibility. The novelty of this assay includes the use of phage-derived tryptic peptides as detected by MALDI-MS to monitor the results of PAD on an instrument common to many modern microbiology laboratories.


Assuntos
Bacteriófagos/genética , Staphylococcus aureus Resistente à Meticilina/isolamento & purificação , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz/métodos , Staphylococcus aureus Resistente à Meticilina/efeitos dos fármacos , Testes de Sensibilidade Microbiana
14.
Retina ; 36(1): 110-8, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26166800

RESUMO

PURPOSE: To determine if baseline fundoscopic and optical coherence tomography (OCT) features influence the clinical course of optic disk pit maculopathy. METHODS: A multicenter retrospective case note review was undertaken, using standardized OCT and clinical data collection. Visual success was defined as at least a two-line visual acuity improvement, anatomical success as full resolution of OCT foveal fluid with restoration of the normal foveal contour, and partial anatomical success as incomplete resolution of the OCT foveal fluid. Outcomes were compared with a synthesis of the literature, using similar eligibility criteria. RESULTS: Of 36 patients (36 eyes), 2 spontaneously improved and 34 underwent surgery. Visual success was achieved in 64% of surgical cases, anatomical success in 36%, and partial anatomical success in 47%. Cases with multilayer intraretinal and subretinal fluid were less likely to have visual success (P = 0.003). Cases where the fluid did not extend to the macular arcade vessels also had better visual and anatomical outcomes (P = 0.004 and 0.005, respectively). CONCLUSION: Fundoscopic and OCT features can help predict surgical outcome in optic disk pit maculopathy.


Assuntos
Anormalidades do Olho/diagnóstico , Disco Óptico/anormalidades , Doenças Retinianas/diagnóstico , Líquido Sub-Retiniano , Adolescente , Adulto , Criança , Anormalidades do Olho/cirurgia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Oftalmoscópios , Prognóstico , Doenças Retinianas/cirurgia , Estudos Retrospectivos , Tomografia de Coerência Óptica , Acuidade Visual/fisiologia , Vitrectomia
15.
Anal Chem ; 87(13): 6769-77, 2015 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-26016659

RESUMO

The continued advance of antibiotic resistance in clinically relevant bacterial strains necessitates the development and refinement of assays that can rapidly and cost-effectively identify bacteria and determine their susceptibility to a panel of antibiotics. A methodology is described herein that exploits the specificity and physiology of the Staphylococci bacteriophage K to identify Staphylococcus aureus (S. aureus) and determine its susceptibility to clindamycin and cefoxitin. The method uses liquid chromatography-mass spectrometry to monitor the replication of bacteriophage after it is used to infect samples thought to contain S. aureus. Amplification of bacteriophage K indicates the sample contains S. aureus, for it is only in the presence of a suitable host that bacteriophage K can amplify. If bacteriophage amplification is detected in samples containing the antibiotics clindamycin or cefoxitin, the sample is deemed to be resistant to these antibiotics, respectively, for bacteriophage can only amplify in a viable host. Thus, with a single work flow, S. aureus can be detected in an unknown sample and susceptibility to clindamycin and cefoxitin can be ascertained. This Article discusses implications for the use of bacteriophage amplification in the clinical laboratory.


Assuntos
Antibacterianos/farmacologia , Bacteriófagos/genética , Espectrometria de Massas/métodos , Staphylococcus aureus/efeitos dos fármacos , Testes de Sensibilidade Microbiana , Staphylococcus aureus/isolamento & purificação
16.
BJU Int ; 116(4): 509-25, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25711488

RESUMO

OBJECTIVES: To improve awareness and recognition of chronic bacterial prostatitis (CBP) and chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) among non-specialists and patients. To provide guidance to healthcare professionals treating patients with CBP and CP/CPPS, in both non-specialist and specialist settings. To promote efficient referral of care between non-specialists and specialists and the involvement of the multidisciplinary team (MDT). PATIENTS AND METHODS: The guideline population were men with CBP or CP/CPPS (persistent or recurrent symptoms and no other urogenital pathology for ≥3 of the previous 6 months). Consensus recommendations for the guidelines were based on a search to identify literature on the diagnosis and management of CBP and CP/CPPS (published between 1999 and February 2014). A Delphi panel process was used where high-quality, published evidence was lacking. RESULTS: CBP and CP/CPPS can present with a wide range of clinical manifestations. The four main symptom domains are urogenital pain, lower urinary tract symptoms (LUTS - voiding or storage symptoms), psychological issues and sexual dysfunction. Patients should be managed according to their individual symptom pattern. Options for first-line treatment include antibiotics, α-adrenergic antagonists (if voiding LUTS are present) and simple analgesics. Repeated use of antibiotics, such as quinolones, should be avoided if there is no obvious symptomatic benefit from infection control or cultures do not support an infectious cause. Early use of treatments targeting neuropathic pain and/or referral to specialist services should be considered for patients who do not respond to initial measures. An MDT approach (urologists, pain specialists, nurse specialists, specialist physiotherapists, general practitioners, cognitive behavioural therapists/psychologists, and sexual health specialists) is recommended. Patients should be fully informed about the possible underlying causes and treatment options, including an explanation of the chronic pain cycle. CONCLUSION: Chronic prostatitis can present with a wide variety of signs and symptoms. Identification of individual symptom patterns and a symptom-based treatment approach are recommended. Further research is required to evaluate management options for CBP and CP/CPPS.


Assuntos
Dor Crônica , Dor Pélvica , Prostatite , Dor Crônica/diagnóstico , Dor Crônica/terapia , Consenso , Humanos , Masculino , Dor Pélvica/diagnóstico , Dor Pélvica/terapia , Prostatite/diagnóstico , Prostatite/terapia
18.
Ophthalmologica ; 233(3-4): 216-21, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25765054

RESUMO

AIMS: Analysis of pre-operative spectral domain optical coherence tomography (SD-OCT) characteristics of full-thickness macular holes (FTMH) and effect on optimum management. METHODS: We retrospectively reviewed SD-OCT characteristics of a consecutive cohort of patients waitlisted for FTMH surgery and categorized them by current evidence-based treatments. RESULTS: Out of the 106 holes analysed, 36 were small, 40 medium and 30 large. Initially, 33 holes had vitreomacular adhesion (VMA). 41 holes were analysed for change in characteristics with a median duration of 8 weeks between the scans. The number of small or medium holes decreased from 20 to 6 and that of large holes doubled. The number of holes with VMA halved. Smaller hole size (p = 0.014) and being phakic (p = 0.048) were associated with a larger increase in size. The strongest predictor of hole progression into a different surgical management category was the presence of VMA. CONCLUSION: FTMH characteristics can change significantly pre-operatively and affect optimal treatment choice.


Assuntos
Perfurações Retinianas/diagnóstico , Perfurações Retinianas/cirurgia , Vitrectomia , Idoso , Grupos Diagnósticos Relacionados , Progressão da Doença , Feminino , Humanos , Masculino , Período Pré-Operatório , Retina/metabolismo , Estudos Retrospectivos , Aderências Teciduais , Tomografia de Coerência Óptica , Acuidade Visual , Corpo Vítreo/metabolismo , Listas de Espera
20.
J Environ Manage ; 149: 209-21, 2015 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-25463584

RESUMO

Most of the world's megacities are located in estuarine regions supporting commercial ports. Such locations are subject to sedimentation and require dredging to maintain activities. Liverpool Bay, northwest UK, is a region of freshwater influence and hypertidal conditions used to demonstrate the impact of baroclinicity when considering sediment disposal. Although tidal currents dominate the time-varying current and onshore sediment movement, baroclinic processes cause a 2-layer residual circulation that influences the longer-term sediment transport. A nested modelling system is applied to accurately simulate the circulation during a three month period. The hydrodynamic model is validated using coastal observations, and a Lagrangian particle tracking model is used to determine the pathways of 2 sediment mixtures representative of locally dredged material: a mix of 70% silt and 30% medium sand and a mix of 50% fine sand and 50% medium sand. Sediments are introduced at 3 active disposal sites within the Mersey Estuary in 2 different quantities (500 and 1500 Tonnes). Following release the majority (83% or more) of the particles remain within the estuary due to baroclinic influence. However, particles able to leave follow 2 distinct pathways, which primarily depend on the sediment grain size. Typically the finer sediment moves north and the coarser sediment west. Under solely barotropic conditions larger sediment volumes (up to 5 times more) can leave the estuary in a diffuse plume moving north. This demonstrates the necessity of considering baroclinic influence even within a hypertidal region with low freshwater inflow for accurate particle tracking studies.


Assuntos
Estuários , Sedimentos Geológicos , Pressão , Movimentos da Água , Inglaterra , Hidrodinâmica , Modelos Teóricos , Tamanho da Partícula
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