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1.
Breast Cancer Res Treat ; 203(2): 215-224, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37878149

RESUMO

PURPOSE: The impact of opportunistic screening mammography in the United States is difficult to quantify, partially due to lack of inclusion regarding method of detection (MOD) in national registries. This study sought to determine the feasibility of MOD collection in a multicenter community registry and to compare outcomes and characteristics of breast cancer based on MOD. METHODS: We conducted a retrospective study of breast cancer patients from a multicenter tumor registry in Missouri from January 2004 - December 2018. Registry data were extracted by certified tumor registrars and included MOD, clinicopathologic information, and treatment. MOD was assigned as screen-detected or clinically detected. Data were analyzed at the patient level. Chi-squared tests were used for categorical variable comparison and Mann-Whitney-U test was used for numerical variable comparison. RESULTS: 5351 women (median age, 63 years; interquartile range, 53-73 years) were included. Screen-detected cancers were smaller than clinically detected cancers (median size 12 mm vs. 25 mm; P < .001) and more likely node-negative (81% vs. 54%; P < .001), lower grade (P < .001), and lower stage (P < .001). Screen-detected cancers were more likely treated with lumpectomy vs. mastectomy (73% vs. 41%; P < .001) and less likely to require chemotherapy (24% vs. 52%; P < .001). Overall survival for patients with invasive breast cancer was higher for screen-detected cancers (89% vs. 74%, P < .0001). CONCLUSION: MOD can be routinely collected and linked to breast cancer outcomes through tumor registries, with demonstration of significant differences in outcome and characteristics of breast cancers based on MOD. Routine inclusion of MOD in US tumor registries would help quantify the impact of opportunistic screening mammography in the US.


Assuntos
Neoplasias da Mama , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/terapia , Mamografia/métodos , Estudos Retrospectivos , Mastectomia/métodos , Detecção Precoce de Câncer/métodos , Sistema de Registros , Programas de Rastreamento/métodos
2.
J Vasc Interv Radiol ; 31(3): 388-392, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31983594

RESUMO

In a single-arm, nonrandomized, retrospective case-control study, 39 patients (mean age, 44 y) who underwent elective outpatient uterine artery embolization with the use of superior hypogastric nerve block (SNHB) for pain control over a period of 3 years were identified. Technical success of SNHB was 87%. Of the 34 patients who received SNHB, 97% did not need a patient-controlled analgesia pump. The median opioid requirement for the 17 patients who needed opioid agents was 7.5 morphine milligram equivalents (interquartile range [IQR], 10). The median length of stay was 2.2 hours (IQR, 1.7 h). SHNB offers a safe and effective intervention that significantly reduces pain and the need for opiate agents and allows same-day discharge after uterine artery embolization.


Assuntos
Plexo Hipogástrico , Leiomioma/terapia , Tempo de Internação , Bloqueio Nervoso , Dor/prevenção & controle , Alta do Paciente , Embolização da Artéria Uterina , Neoplasias Uterinas/terapia , Adulto , Analgesia Controlada pelo Paciente , Analgésicos Opioides/administração & dosagem , Feminino , Humanos , Leiomioma/diagnóstico por imagem , Bloqueio Nervoso/efeitos adversos , Dor/diagnóstico , Dor/etiologia , Medição da Dor , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Embolização da Artéria Uterina/efeitos adversos , Neoplasias Uterinas/diagnóstico por imagem
3.
Breast J ; 26(10): 1953-1959, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-33064341

RESUMO

Incidence of interval cancers is an important outcome in assessing efficacy of screening. Our primary objective was to compare the incidence of interval cancers detected with two-dimensional digital mammography (DM) versus digital breast tomosynthesis (DBT) in a large community health system. Our secondary objectives were to compare the patient and tumor characteristics of interval cancers, cancer detection rate, and recall rate. Interval cancers before and after implementation of DBT (2012-2014 DM group; 2016-2018 DBT group) were reviewed. Patient factors (age, race, breast density, personal history of breast cancer, family history of breast cancer, known BRCA-1 or BRCA-2 genetic mutation, baseline mammogram, and presentation) and tumor characteristics (in situ versus invasive, grade, size, hormone receptor status, and nodal status) were compared with the chi-squared test or the MidP exact test. Rates (detection and recall) were compared using a z-score. The rates of interval cancers with DM (0.30 per 1000 [35/117 099]) and DBT (0.33 per 1000 [40/119 746]) were similar (P = .3). Proportion of node-positive interval cancers was lower in the DBT group (22.9% [8/35] vs 48% [15/31], p.01). Otherwise, the patient and tumor characteristics were similar. The cancer detection rate increased (5.9 per 1000 [709/119 746] vs 3.5 per 1000 [411/117 099], P = .0001), and the recall rate decreased with DBT (8.6% [10 347/119 746] versus 10.7% [12 508/117 099], (P < .0001). Although the cancer detection rate was higher with DBT, the rate of interval breast cancers was similar in both groups. Node-positive invasive interval cancers were decreased with DBT.


Assuntos
Neoplasias da Mama , Mama/diagnóstico por imagem , Densidade da Mama , Neoplasias da Mama/diagnóstico por imagem , Detecção Precoce de Câncer , Feminino , Humanos , Mamografia
4.
Pediatr Radiol ; 50(6): 855-862, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32055917

RESUMO

BACKGROUND: Few studies on the safety of gadolinium-based contrast agents have been performed in children with even fewer focusing on children younger than 2 years of age. OBJECTIVE: To assess the safety of gadoterate meglumine (Dotarem) in patients younger than 2 years of age by evaluating adverse events following contrast administration. MATERIALS AND METHODS: Pediatric patients younger than 2 years of age undergoing magnetic resonance imaging (MRI) with and without contrast were prospectively enrolled and received a weight-based intravenous dose of gadoterate meglumine (0.1 mmol/kg). The occurrence of adverse events was assessed at the time of injection, 2 h after MRI, and by phone contact using a standard questionnaire 24 h after MRI. Adverse events were documented including the time of onset, duration of symptoms, intensity, causality and subsequent outcome. Descriptive statistics were used to characterize patient information. RESULTS: One hundred fifty exams were completed in 150 patients (median age: 12.1 months, age range: 0.25-23 months; males: 56%). Almost all patients (97.3%) received sedation/anesthesia before and during MRI. Thirty-four adverse events were reported in 23 patients overall (15.3%; male: 73.9%; median age: 11 months, age range: 3-23 months). Within the initial 2 h after the injection, there was one report of transient flushing/warmth and one report of vomiting, the latter of which was related to drinking formula too soon after anesthesia. Twenty-two patients (14.7%), who had all received sedation/anesthesia, experienced minor adverse events within 24 h, most physiological. Fourteen patients (9.3%) reported emesis, eight (5.3%) reported transient flushing/warmth, seven (4.7%) reported nausea, one (0.7%) reported altered taste and one (0.7%) reported dizziness. No patient experienced anaphylaxis. Two patients (1.3%) reported allergic-like reactions, which consisted of wheezing or sneezing. CONCLUSION: No patient experienced adverse events directly related to gadoterate meglumine. Only two adverse events were reported to have occurred in the initial 2 h after the exam, while the rest were reported on the 24-h follow-up call. The higher reported rate of adverse events in this study may be related to concomitant sedation/anesthesia as well as to overreporting from parents on the 24-h follow-up questionnaire. The study confirms a good safety profile for gadoterate meglumine in this very sensitive population.


Assuntos
Meios de Contraste/efeitos adversos , Imageamento por Ressonância Magnética , Meglumina/efeitos adversos , Compostos Organometálicos/efeitos adversos , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Prospectivos , Inquéritos e Questionários
5.
Pediatr Radiol ; 49(13): 1773-1780, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31420701

RESUMO

BACKGROUND: Calcifications along ventricular catheters have been associated with shunt fractures although it is unknown whether their development predicts whether and when the shunts will fracture. OBJECTIVE: To determine whether extracranial calcifications found on a radiographic shunt series predicts whether a patient will experience a shunt catheter fracture or complication. MATERIALS AND METHODS: A retrospective review was performed of pediatric patients with a ventricular shunt placed before 18 years of age and radiographic shunt series. Two thousand, six hundred and thirty shunt series in 523 patients (301 male) were reviewed to identify the development of calcifications around the catheter and fracture. Fifty-one patients were excluded for preexisting calcifications with shunt fracture. (48) Absence of shunt (2) or age (1). Analysis included descriptive statistics, odds ratio and chi-square test results. RESULTS: Four hundred seventy-two patients were included. Of the 59 shunts in 58 patients that developed calcifications, 23 went on to fracture (39%). Forty shunts without calcification in 37 patients developed fractures. There is a significant positive association between calcification and fracture (Χ2=39.1, P<0.01). It is 6.12 times more likely that a fractured shunt had calcifications compared to a non-fractured shunt having calcifications. Calcifications appeared within an average of 9 years, 10 months (range: 4-14 years) after shunt insertion. Shunt fractures occurred within an average of 5 years, 2 months (range: 6 months-9 years) after the appearance of calcifications with a median patient age of 14.6 years. Nearly all fractures were at or adjacent to the calcifications, most commonly in the neck (17/23; 73.9%). CONCLUSION: Shunt calcification represents a significant risk for catheter fracture in the pediatric population. Early intervention or closer interval follow-up may be indicated in those found to have calcifications.


Assuntos
Calcinose/patologia , Falha de Equipamento/estatística & dados numéricos , Hidrocefalia/cirurgia , Reoperação/métodos , Derivação Ventriculoperitoneal/efeitos adversos , Adolescente , Distribuição por Idade , Calcinose/diagnóstico por imagem , Calcinose/epidemiologia , Catéteres/efeitos adversos , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Seguimentos , Humanos , Hidrocefalia/diagnóstico por imagem , Incidência , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos , Medição de Risco , Índice de Gravidade de Doença , Distribuição por Sexo , Fatores de Tempo , Resultado do Tratamento , Estados Unidos , Derivação Ventriculoperitoneal/métodos
6.
Pediatr Radiol ; 49(13): 1742-1753, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31418057

RESUMO

BACKGROUND: While liver biopsy remains the gold standard, given the procedure risks and sampling errors, there is a need for reliable noninvasive biomarkers of hepatic fibrosis. OBJECTIVE: Determine the accuracy of two-dimensional shear wave elastography (2-D SWE) in predicting the histological severity of liver fibrosis in pediatric patients with known or suspected liver disease. MATERIALS AND METHODS: Subjects 0-18 years old with known or suspected liver disease and liver biopsy within 30 days (n=70) were included. Comparisons by 2-D SWE were made to a control group (n=79). Two-dimensional SWE was performed using the GE LOGIQ E9 system. Liver biopsy specimens were scored according to METAVIR and Ishak scoring systems using Spearman's Rho correlation. Receiver operator characteristic (ROC) analysis, Kruskal-Wallis and Mann-Whitney U tests were conducted. RESULTS: Control group median 2-D SWE measurements were lower than in subjects with any degree of liver fibrosis (P<0.001). Those with METAVIR F0 and Ishak 0 scores had significantly lower median 2-D SWE measurements (1.35 m/s; 1.36 m/s) than those with more advanced liver disease (F1-F3: 1.49-1.62 m/s; 1-4: 1.45-1.63 m/s) (P<0.05 for all), whereas the 2-D SWE in the higher scores were similar. Results did not differ between METAVIR and Ishak scores for any degree of fibrosis. Fibrosis scores moderately correlated with median 2-D SWE measurements (rs=0.43). The area under the curve for F1 compared to combined control/F0 was 0.89 (95% confidence interval [CI] 0.83-0.95; P<0.001) with sensitivity of 94.6% and specificity of 78.6%. Results for Ishak score 1 were similar. The ideal cutoff value for identifying fibrosis was determined to be 1.29 m/s. CONCLUSION: The liver 2-D SWE measurements correlated with the histological liver fibrosis scores, regardless of the histopathological scoring system, although 2-D SWE was better at identifying patients with early fibrosis, not at distinguishing among the individual fibrosis levels. Two-dimensional SWE using the GE LOGIQ US system is useful for identifying pediatric patients at risk for liver fibrosis.


Assuntos
Técnicas de Imagem por Elasticidade/métodos , Cirrose Hepática/diagnóstico por imagem , Cirrose Hepática/patologia , Hepatopatias/diagnóstico por imagem , Hepatopatias/patologia , Adolescente , Biópsia por Agulha , Estudos de Casos e Controles , Criança , Pré-Escolar , Intervalos de Confiança , Feminino , Humanos , Imuno-Histoquímica , Valor Preditivo dos Testes , Prognóstico , Curva ROC , Valores de Referência , Estudos Retrospectivos , Medição de Risco , Índice de Gravidade de Doença , Estatísticas não Paramétricas
7.
Pediatr Radiol ; 49(9): 1132-1141, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31165184

RESUMO

BACKGROUND: Fewer residents are choosing a career in pediatric radiology, which is contributing to an ongoing shortage of pediatric radiologists. OBJECTIVE: To identify potential causes of reduced interest in pediatric radiology as a career given a projected worsening of a nationwide shortage of pediatric radiologists. MATERIALS AND METHODS: An online questionnaire using previously published questions was approved and distributed by the Program Directors in Diagnostic Radiology to diagnostic radiology residents on behalf of the Society for Pediatric Radiology (SPR). Descriptive statistics including means with standard error and independent t-tests were used to compare mean scores between survey years. RESULTS: Nearly all of the 353 respondents (90.9%) planned on pursuing a fellowship. The majority (57.7%) identified their fellowship subspecialty before the 3rd year of residency with only 5.7% selecting pediatric radiology. Overall, 18.2% of survey respondents favored academic practice compared to 40% in the pediatric radiology subgroup. Fellowship choices were most strongly based on area of strong personal interest, marketability and area of strong personal knowledge, while the pediatric radiology subgroup emphasized area of strong personal interest, increased interaction with other physicians and enjoyable residency rotations. The pediatric radiology subgroup believed their impact on patient care was more significant than other subspecialties. Pediatric radiology job opportunities were thought to be more limited, geographically confining, and to have lower salaries than other subspecialties. More flexible job opportunities and higher demand were identified as factors needing to change before a resident would consider a pediatric radiology career. CONCLUSION: The influence on fellowship selection is multifactorial. By emphasizing the favorable job market and marketability of pediatric radiology in all practice types/geographic locations, correcting perceived salary gaps and stressing the impact on patient care as early as medical school, the number of residents choosing a career in pediatric radiology may grow.


Assuntos
Escolha da Profissão , Comportamento de Escolha , Bolsas de Estudo , Pediatria/educação , Radiologia/educação , Adulto , Feminino , Humanos , Masculino , Inquéritos e Questionários , Estados Unidos
8.
Euro Surveill ; 23(6)2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29439753

RESUMO

Context and AimOne of the most common sexually transmitted pathogens disproportionately affecting young people is Chlamydia trachomatis (CT). This study aimed to assess prevalence of CT among sexually active students (aged 18-19 years) in their final years of high school education in Warsaw and Krakow. Methods: The sample was selected from 61 clusters, each cluster representing one school. We described city, sex, type of school and their association with CT prevalence. To account for non-responders we applied inverse probability weighting. Results: Our study population consisted of 3,136 young adults eligible for CT screening, of whom 2,326 reported having had sexual intercourse within past 12 months. Of the 950 students who agreed to be tested, 39 were infected with CT. Weighted prevalence of CT was 3.9% (95% confidence interval (CI): 2.7-5.1); however, prevalence in the students in Warsaw (6.6%; 95% CI: 3.5-12.4) was six times higher (prevalence ratio (PR) = 5.9; 95% CI: 2.0-17.3) than in Krakow (1.1%; 95% CI: 0.5-2.6). In both settings, female students attending vocational-technical schools were most affected; the prevalence in this group was more than five times higher (PR = 5.2; 95% CI: 1.7-15.6) compared with female peers in high schools and more than three times higher (PR = 3.3; 95% CI: 1.0-10.7) compared with male peers attending vocational-technical schools. Conclusion: Our study suggested prevalence of CT infection among young people in Poland comparable with the European average, supporting implementation of a CT control programme as recommended in international guidelines.


Assuntos
Infecções por Chlamydia/diagnóstico , Chlamydia trachomatis/isolamento & purificação , Instituições Acadêmicas , Comportamento Sexual , Estudantes/estatística & dados numéricos , Adolescente , Infecções por Chlamydia/epidemiologia , Estudos Transversais , Feminino , Humanos , Masculino , Programas de Rastreamento , Polônia/epidemiologia , Prevalência , Fatores de Risco , População Urbana , Adulto Jovem
9.
Prev Chronic Dis ; 12: E100, 2015 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-26111156

RESUMO

BACKGROUND: Evidence-based decision making (EBDM) is an effective strategy for addressing population health needs. Assessing and reducing barriers to using EBDM in local health departments may improve practice and provide insight into disseminating EBDM principles among public health practitioners. COMMUNITY CONTEXT: Administrative leaders at the Pueblo City-County Health Department, Pueblo, Colorado, used a systematic approach for implementing EBDM. Research partners engaged staff to understand factors that increase or deter its use. METHODS: A survey was distributed to staff members at baseline to identify gaps in administrative and individual practice of EBDM. In-depth interviews were also conducted with 11 randomly selected staff members. Results were shared with staff and administration, after which activities were implemented to improve application of EBDM. A follow up survey was administered 1 year after the initial assessment. OUTCOME: Survey data showed evidence of progress in engaging and educating staff members, and data showed improved attitudes toward EBDM (ie, several items showed significant improvement from baseline to follow-up). For example, staff members reported having the necessary skills to develop evidence-based interventions (73.9%), the ability to effectively communicate information on evidence-based strategies to policy makers (63.0%), access to current information on improving EBDM processes (65.2%), and a belief that evidence-based interventions are designed to be self-sustaining (43.5%). INTERPRETATION: Within a local health department in which leaders have made EBDM a priority, addressing the culture and climate of the department may build EBDM. Future research may provide insight into tailoring EBDM within and across local health departments.


Assuntos
Tomada de Decisões , Prática Clínica Baseada em Evidências/organização & administração , Conhecimentos, Atitudes e Prática em Saúde , Governo Local , Saúde Pública , Desenvolvimento de Pessoal , Pessoal Administrativo/psicologia , Pessoal Administrativo/estatística & dados numéricos , Colorado , Interpretação Estatística de Dados , Difusão de Inovações , Prática Clínica Baseada em Evidências/métodos , Grupos Focais , Seguimentos , Implementação de Plano de Saúde , Promoção da Saúde , Necessidades e Demandas de Serviços de Saúde , Humanos , Entrevistas como Assunto , Liderança , Estudos de Casos Organizacionais , Cultura Organizacional , Avaliação de Resultados em Cuidados de Saúde , Formulação de Políticas , Avaliação de Programas e Projetos de Saúde , Saúde Pública/educação , Saúde Pública/normas , Prática de Saúde Pública/normas , Pesquisa Qualitativa , Desenvolvimento de Pessoal/métodos , Recursos Humanos
10.
Mar Pollut Bull ; 205: 116604, 2024 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-38936002

RESUMO

Methylmercury is a toxin of local, regional, and global concern, with estuarine habitats possessing ecological characteristics that support conversion of inorganic mercury into this methylated form. We monitored Hg concentrations in species within the food web of the lower Cape Fear River (CFR) estuary in 2018-2020. Samples were analyzed for Hg concentrations and nitrogen isotopes (a measure of trophic level), and we found a positive relationship within this food web each year (p < 0.0001), indicating biomagnification is occurring. The highest Hg concentrations were among the upper trophic level species (Royal Terns, 4.300 ppm). While the Hg concentrations we documented are below assumed thresholds for toxic effects, we found spikes in Hg concentrations after Hurricane Florence in 2018 and with other disturbances to the CFR that resuspended bottom sediments. Continued monitoring is needed to understand the cause of annual variations, health implications, and conservation needs.

11.
Plant Biotechnol J ; 10(5): 545-54, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22321580

RESUMO

A new understanding of leaf starch degradation has emerged in the last 10 years. It has been shown that starch phosphorylation and dephosphorylation are critical components of this process. Glucan, water dikinase (GWD) (and phosphoglucan, water dikinase) adds phosphate to starch, and phosphoglucan phosphatase (SEX4) removes these phosphates. To explore the use of this metabolism to manipulate starch accumulation, Arabidopsis (Arabidopsis thaliana) plants were engineered by introducing RNAi constructs designed to reduce expression of AtGWD and AtSEX4. The timing of starch build-up was altered with ethanol-inducible and senescence-induced gene promoters. Ethanol induction of RNAi lines reduced transcript for AtGWD and AtSEX4 by 50%. The transgenic lines had seven times more starch than wild type at the end of the dark period but similar growth rates and total biomass. Elevated leaf starch content in maize leaves was engineered by making an RNAi construct against a gene in maize that appeared to be homologous to AtGWD. The RNAi construct was expressed using the constitutive ubiquitin promoter. Leaf starch content at the end of a night period in engineered maize plants was 20-fold higher than in untransformed plants with no impact on total plant biomass. We conclude that plants can be engineered to accumulate starch in the leaves with little impact on vegetative biomass.


Assuntos
Proteínas de Arabidopsis/metabolismo , Arabidopsis/genética , Fosfatases de Especificidade Dupla/metabolismo , Fosfatos/metabolismo , Fosfotransferases (Aceptores Pareados)/metabolismo , Amido/metabolismo , Arabidopsis/metabolismo , Proteínas de Arabidopsis/genética , Biomassa , Biologia Computacional , Fosfatases de Especificidade Dupla/genética , Regulação da Expressão Gênica de Plantas , Fosforilação , Fosfotransferases (Aceptores Pareados)/genética , Folhas de Planta/metabolismo , Plantas Geneticamente Modificadas/genética , Plantas Geneticamente Modificadas/metabolismo , Regiões Promotoras Genéticas , Interferência de RNA , Zea mays/genética , Zea mays/metabolismo
12.
Clin Imaging ; 72: 58-63, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33217671

RESUMO

RATIONAL: While radiology residents must participate in a scholarly project per Accreditation Council for Graduate Medical Education (ACGME) Program Requirements, some residency programs may lack a well-thought out, cohesive approach to research that incorporates the residents' perspective. Our objective was to improve the radiology resident research experience with resident-led initiatives. MATERIAL AND METHODS: An annual resident research survey was created and distributed to 28 radiology residents in December 2018. Following the survey, a newly formed resident research committee developed a six-step strategic framework of resident-led initiatives to promote research and scholarly activity within the department: Reflect, Recruit, Regroup, Revive, Recognize, and Review. Outcomes of this framework were evaluated with the second annual resident research survey in December 2019. RESULTS: Our institution identified areas of improvement on the 2019 survey after the implementation of the six-step initiatives upon comparison to the 2018 survey. A greater number of residents reported that they had adequate or somewhat adequate resources for research within the department in 2019 (95.2% [20/21]) in comparison to 2018 (70.6% [12/17]) (p = 0.03). A greater percentage of residents found available research projects engaging/interesting in 2019 (80.9% [17/21]) compared to 2018 (70.6% 12/17) (p = 0.49). The most commonly reported departmental resources needed to encourage research on the 2019 survey were dedicated research time (26.9%, 18 out of 67 total responses) and mentorship/encouragement from the faculty (19.4%, 13/67). CONCLUSION: With a specific framework and appropriate departmental support, resident-led initiatives can improve the research experience within the radiology department from the residents' perspective.


Assuntos
Internato e Residência , Radiologia , Acreditação , Educação de Pós-Graduação em Medicina , Humanos , Mentores , Radiologia/educação
13.
Annu Int Conf IEEE Eng Med Biol Soc ; 2019: 2943-2946, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31946507

RESUMO

Type 2 diabetes (T2D) is a long-term metabolic disorder. A pilot trial was designed to investigate the effects of the long acting insulin Detemir on endogenous insulin secretion, to assess use in early T2D care. Provesn metabolic system models are used to identify patient-specific insulin sensitivity and endogenous insulin secretion from clinical data. Post-cardiac surgery patients with early T2D or pre-diabetes based on HbA1c were given a bolus of insulin Detemir on one day, and none on the second day in hospital. Blood glucose, insulin, C-Peptide, and all nutrition given are recorded. Early results from N=3 patients show 0.8-1.0U/hour insulin Detemir doses have no apparent suppression of endogenous insulin secretion, but does help lower glucose levels. The results show the model captures glucose-insulin dynamics in pre-diabetic post-surgical patients, and insulin Detemir may be useful to support individuals with pre-diabetes in reducing blood glucose levels. Tests with higher doses, need to be carried out to verify these results over a greater range of patients.


Assuntos
Diabetes Mellitus Tipo 2 , Hipoglicemiantes/farmacologia , Insulina Detemir/farmacologia , Insulina/sangue , Idoso , Glicemia , Feminino , Humanos , Masculino , Modelos Teóricos , Projetos Piloto
14.
J Med Radiat Sci ; 66(4): 238-249, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31657129

RESUMO

INTRODUCTION: Contouring has become an increasingly important aspect of radiation therapy due to inverse planning, and yet is extremely time-consuming. To improve contouring efficiency and reduce potential inter-observer variation, the atlas-based auto-segmentation (ABAS) function in Velocity was introduced to ICON cancer centres (ICC) throughout Australia as a solution for automatic contouring. METHODS: This paper described the implementation process of the ABAS function and the construction of user-defined atlas sets and compared the contouring efficiency before and after the introduction of ABAS. RESULTS: The results indicate that the main limitation to the ABAS performance was Velocity's sub-optimal atlas selection method. Three user-defined atlas sets were constructed. Results suggested that the introduction of the ABAS saved at least 5 minutes of manual contouring time (P < 0.05), although further verification was required due to limitations in the data collection method. The pilot rollout adopting a 'champion' approach was successful and provided an opportunity to improve the user-defined atlases prior to the national implementation. CONCLUSION: The implementation of user-defined ABAS for head and neck (H&N) and female thorax patients at ICCs was successful, which achieved at least 5 minutes of efficiency gain.


Assuntos
Planejamento da Radioterapia Assistida por Computador/métodos , Austrália , Coleta de Dados , Feminino , Neoplasias de Cabeça e Pescoço/radioterapia , Humanos , Masculino , Neoplasias Torácicas/radioterapia
15.
Int J STD AIDS ; 27(14): 1267-1274, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-26503556

RESUMO

Routine HIV testing in non-specialist settings has the potential to significantly reduce late diagnosis and delay in treatment. The objective was to determine the feasibility and acceptability of HIV testing in an Emergency Department (ED) at a busy London teaching hospital. We conducted an observational cross sectional study between March-May 2012 where patients aged between 18-65 years attending St George's ED having serological tests were offered HIV testing by ED clinical staff. Patients were given an information leaflet on HIV, including how to obtain results. Data detailing whether the test was offered (feasibility) and whether the patient consented to the test (acceptability) were documented. Information regarding reasons for not offering HIV testing and reasons why the test was declined was also recorded. During the study period, 24,171 patients aged 18-65 were seen in the ED. Data were collected from 5657 patients. The mean age was 38 years, 57% were female and 27% identified themselves as white. 48% were offered HIV testing, of which 65% accepted. Incapacity to consent to testing was cited by clinicians as the commonest reason for not offering an HIV test (76%). 'Recent HIV test' was the commonest reason for declining a test (38%). One new HIV diagnosis was made. Our experience demonstrates that routine HIV testing in the ED is feasible and acceptable. However, to make HIV testing effective and part of routine clinical care, considerable clinical leadership, staff training and additional resources are required.


Assuntos
Serviço Hospitalar de Emergência/estatística & dados numéricos , Infecções por HIV/diagnóstico , Programas de Rastreamento/métodos , Aceitação pelo Paciente de Cuidados de Saúde , Adolescente , Adulto , Idoso , Estudos Transversais , Diagnóstico Tardio/prevenção & controle , Serviço Hospitalar de Emergência/organização & administração , Estudos de Viabilidade , Feminino , Infecções por HIV/prevenção & controle , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
16.
Infect Dis (Lond) ; 47(9): 604-10, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25903310

RESUMO

BACKGROUND: Tick-borne encephalitis (TBE) is a viral infection with no available treatment. Due to its non-specific symptoms, TBE tends to be under-diagnosed and under-reported. We aimed to identify factors predicting TBE diagnosis to develop a diagnostic algorithm for use by physicians. METHODS: We conducted a case-control study using data routinely collected in Poland during 2009-2010. We included patients admitted to hospitals, who were assigned an International Classification of Disease (ICD) code indicating aseptic meningo-encephalitis. Cases were confirmed by detection of specific IgG and IgM antibodies. Patients that tested negative for TBE were included as controls. We used logistic regression to determine associations and recursive partitioning to build a diagnostic algorithm based on 70% of the dataset, and validated the algorithm using the remaining 30%. RESULTS: Of 774 patients, 273 (35%) were TBE-positive. Cerebrospinal fluid protein levels and presence of a tick bite were key decision points in the algorithm, while living in a TBE endemic area was not important. Application of the algorithm to the validation dataset yielded a sensitivity of 89% and specificity of 37%. CONCLUSIONS: TBE should be included in routine diagnostic protocols for all cases admitted to hospitals with meningitis or encephalitis. However, in resource-limited settings and in regions with unknown TBE endemicity status, our algorithm could indicate which cases should be tested for TBE.


Assuntos
Encefalite Transmitida por Carrapatos/diagnóstico , Encefalite Transmitida por Carrapatos/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Algoritmos , Estudos de Casos e Controles , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Polônia/epidemiologia , Estudos Retrospectivos , Adulto Jovem
17.
Parasit Vectors ; 6: 180, 2013 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-23777675

RESUMO

BACKGROUND: Tick-borne encephalitis (TBE) is found in limited endemic foci in Poland. Lack of diagnosis limits disease detection in non-endemic provinces. METHODS: In 2009, we enhanced TBE surveillance to confirm the location of endemic foci and inform vaccination policy. In 105 hospitals located in 11/16 provinces, we identified suspected TBE cases through admission ICD-10 codes indicating aseptic meningo-encephalitis or from specimens tested for TBE. The National Reference Laboratory confirmed cases at no cost, by testing serum and/or cerebrospinal fluid using ELISA method. We calculated TBE reported rates as the number of confirmed TBE cases per 100,000 inhabitants. Adjusting to neighbouring districts, we classified districts as non-endemic (<0.1 cases per 100,000 inhabitants), low endemic (> = 0.1 to <1), moderately endemic (> = 1 to <5) and highly endemic (> = 5). We compared surveillance data obtained in 2009 with 2004-2008 baseline data. RESULTS: Among 166,099 admissions, we identified 1,585 suspected TBE cases of which 256 were confirmed. Physicians reported more suspected cases among patients <40 years old (12 cases per 1,000 admissions) than among older patients (8 cases per 1,000 admissions). However, patients <40 years of age were confirmed less frequently (16%), than older patients (35%). Physicians reported more suspected cases in districts classed as endemic during 2004-2008 (12 cases per 1,000 admissions, 77% tested for TBE) than in districts classed as non-endemic (7 cases per 1,000 admissions, 59% tested). Of the 38 newly identified endemic districts, 31 were adjacent to 2004-2008 endemic districts and 7 were isolated. CONCLUSIONS: Enhanced surveillance detected 38 new endemic districts to be considered for TBE vaccination. However, lack of consistent testing in districts believed to be TBE-free remained an obstacle for mapping TBE risk. Although the disease affects mostly older adults and the elderly, more attention is given to the diagnosis of TBE in young patients. Solutions need to be identified to sustain sensitive, acceptable and affordable TBE surveillance in all districts of Poland. Also, higher attention should be given to the diagnosis of TBE in the elderly.


Assuntos
Anticorpos Antivirais/sangue , Vírus da Encefalite Transmitidos por Carrapatos/imunologia , Encefalite Transmitida por Carrapatos/epidemiologia , Adolescente , Adulto , Criança , Pré-Escolar , Monitoramento Epidemiológico , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Polônia/epidemiologia , Risco , Adulto Jovem
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