Titre : Électrons

Électrons : Questions médicales fréquentes

Termes MeSH sélectionnés :

Vision Screening
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"On utilise des détecteurs de particules comme les chambres à bulles ou les compteurs Geiger." } }, { "@type": "Question", "name": "Quels appareils mesurent les électrons ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Les spectromètres de masse et les microscopes électroniques mesurent les électrons." } }, { "@type": "Question", "name": "Peut-on visualiser les électrons ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Oui, via des techniques comme la microscopie électronique à transmission." } }, { "@type": "Question", "name": "Quel rôle jouent les électrons dans les réactions chimiques ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Les électrons participent aux liaisons chimiques et aux transferts d'énergie." } }, { "@type": "Question", "name": "Comment les électrons affectent-ils la conductivité ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Les électrons libres dans un matériau déterminent sa conductivité électrique." } }, { "@type": "Question", "name": "Quels symptômes sont liés à une exposition excessive aux électrons ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Une exposition excessive peut causer des brûlures cutanées ou des lésions tissulaires." } }, { "@type": "Question", "name": "Comment l'exposition aux électrons affecte-t-elle la santé ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Elle peut entraîner des effets biologiques comme des mutations cellulaires." } }, { "@type": "Question", "name": "Quels signes indiquent une surdose d'électrons ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes comme des nausées ou des vertiges peuvent survenir." } }, { "@type": "Question", "name": "Les électrons peuvent-ils causer des maladies ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une exposition prolongée peut augmenter le risque de cancers." } }, { "@type": "Question", "name": "Quels effets à long terme l'exposition aux électrons peut-elle avoir ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Des effets à long terme incluent des troubles neurologiques ou des cancers." } }, { "@type": "Question", "name": "Comment prévenir l'exposition aux électrons ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Utiliser des équipements de protection et respecter les normes de sécurité." } }, { "@type": "Question", "name": "Quelles mesures de sécurité en laboratoire sont nécessaires ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Porter des gants, des lunettes de protection et travailler sous hotte." } }, { "@type": "Question", "name": "Comment réduire les risques d'exposition aux radiations ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Limiter le temps d'exposition et augmenter la distance des sources de radiation." } }, { "@type": "Question", "name": "Quels équipements protègent contre les électrons ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Des écrans en plomb ou des barrières de protection sont efficaces." } }, { "@type": "Question", "name": "Comment sensibiliser aux dangers des électrons ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Organiser des formations et des campagnes d'information sur les risques." } }, { "@type": "Question", "name": "Comment traiter les brûlures causées par les électrons ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Les brûlures doivent être nettoyées et couvertes, et des analgésiques peuvent être prescrits." } }, { "@type": "Question", "name": "Y a-t-il des antidotes pour l'exposition aux électrons ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Il n'existe pas d'antidote spécifique, mais un traitement symptomatique est recommandé." } }, { "@type": "Question", "name": "Comment gérer les effets des radiations sur la santé ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "La gestion inclut des soins médicaux, des suivis réguliers et des traitements ciblés." } }, { "@type": "Question", "name": "Quels traitements sont disponibles pour les cancers liés aux électrons ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements incluent la chimiothérapie, la radiothérapie et la chirurgie." } }, { "@type": "Question", "name": "Comment traiter les mutations cellulaires causées par les électrons ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement dépend du type de mutation, souvent par des thérapies ciblées." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir après une exposition ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications comme des cancers ou des troubles génétiques peuvent survenir." } }, { "@type": "Question", "name": "Les électrons peuvent-ils causer des maladies chroniques ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'exposition prolongée peut entraîner des maladies chroniques comme des cancers." } }, { "@type": "Question", "name": "Quels effets secondaires sont liés aux traitements des électrons ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Les effets secondaires incluent la fatigue, des nausées et des troubles sanguins." } }, { "@type": "Question", "name": "Comment les électrons affectent-ils le système immunitaire ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Une exposition excessive peut affaiblir le système immunitaire, augmentant les infections." } }, { "@type": "Question", "name": "Quelles sont les conséquences d'une exposition aiguë ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Une exposition aiguë peut entraîner des brûlures, des lésions tissulaires et des douleurs." } }, { "@type": "Question", "name": "Quels sont les facteurs de risque d'exposition aux électrons ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les travailleurs en laboratoire, les radiologues et les techniciens sont à risque." } }, { "@type": "Question", "name": "Comment l'environnement influence-t-il l'exposition aux électrons ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Des environnements industriels ou médicaux peuvent augmenter l'exposition aux électrons." } }, { "@type": "Question", "name": "Les enfants sont-ils plus à risque d'exposition ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les enfants sont plus sensibles aux effets des radiations et des électrons." } }, { "@type": "Question", "name": "Quels comportements augmentent le risque d'exposition ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Des comportements comme le non-port de protections augmentent le risque d'exposition." } }, { "@type": "Question", "name": "Comment les antécédents médicaux influencent-ils le risque ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Des antécédents de maladies peuvent augmenter la vulnérabilité aux effets des électrons." } } ] } ] }

Sources (10000 au total)

Paediatric vision screening in Urban Lhasa from the Tibetan Plateau of Southwest China.

Few studies of vision screening in school-aged children were reported in Tibetan Plateau. We herein summarize the results of a mandatory vision screening conducted in young children in the Tibetan Pla... The Lhasa Childhood vision Screening (LCVS) performed uncorrected distant visual acuity (UCVA) test on primary school students in urban Lhasa from July to September 2019. Pin-hole corrected VA (PCVA) ... Overall, 34,848 children aged 9.03 ± 1.87 years fulfilled the screening with a response rate of 98.5%. 18,412 (52.8%) of the participants were males, and 30,531(87.6%) were Tibetan. The prevalence of ... This study documented a relatively low prevalence of decreased VA and VI in Tibetan primary school students than other urban populations in China. An increasing trend of poor vision with grades was fo...

Adherence to referrals from preschool vision screening and identification of barriers for non-adherence in Israel.

Preschool vision screening is essential for the early detection and treatment of eye and vision problems.... The rate of parental adherence to referrals for comprehensive examination was assessed and factors and potential barriers associated with adherence were identified.... In a prospective cohort study design, parents were offered to bring their 3-6 year old aged children to free-of-charge vision screening tests at community-based Mother Child Health Centers. Children w... Altogether 1283 children (mean age 4.5 ± 0.6 years, 47.8% girls) were screened in the Jerusalem district, Israel. The ethnic groups, Jewish (ultra-Orthodox 51.4%, secular/religious 33.2%) and Arab (15... Only half the parents proceeded with the recommended full eye examination. Parents of older children were more likely to adhere to referral. In contrast with vaccinations provided by Mother Child Heal...

Distribution of Astigmatism among School Children Who Fail Vision Screening in South India.

The purpose of this study is to report the distribution of astigmatism among school children in South India.... The study was conducted as part of a national school eye screening project named 'Refractive Error Among Children' (REACH) between 6 and 17 years of age. Children underwent presenting visual acuity sc... Data of 245,565 children from 1047 schools were taken for analysis. The average age was 11.63 ± 3.32 (range:6-17) years. After screening, refractive errors and astigmatism was found to be 6.57% (n = 1... More than 50% of children who failed vision screening with refractive errors presented with astigmatism. Prevalence was higher among primary school children. Presence of higher magnitude and unilatera...

A population-level post-screening treatment cost framework to help inform vision screening choices for children under the age of seven.

Visual acuity (VA) screening in children primarily detects low VA and amblyopia between 3 and 6 years of age. Photoscreening is a low-cost, lower-expertise alternative which can be carried out on youn... The EUSCREEN Screening Cost-Effectiveness Model was used together with published literature to estimate referral rates and case mix of referrals from different screening modalities (photoscreening and... Earlier VA screening and photoscreening yield higher numbers of referrals because of lower sensitivity and specificity for disease, and a different case mix, compared to later VA screening. Photoscree... All children should be screened for amblyopia and low vision before the age of 6. Very early detection of amblyopia refractive risk factors may prevent or mitigate amblyopia for some affected children...

Characteristics Associated with Barriers to Eye Care: A Cross-Sectional Survey at a Free Vision Screening Event.

Social determinants of health can limit access to regular eye care, but their role in ophthalmology is underexamined. The purpose of this study is to assess the relationship between patient characteri... This anonymous, cross-sectional survey was conducted at a 2-day free eye clinic event in Pittsburgh, Pennsylvania. Adult patients presenting for vision screening were eligible to participate. Patient ... Of 269 eligible, consecutive patients approached for survey completion, 183 comprised the volunteer sample. The 183 participants (105 female patients [59%]) had a mean (standard deviation) age of 53 (... Three-quarters of vision screening attendees reported at least one barrier to regular eye care, most commonly medical costs and insurance....

The Vision Detroit Project: Integrated Screening and Community Eye-Health Education Interventions Improve Eyecare Awareness.

Poor eye-health knowledge and health literacy are pervasive, contributing to worse outcomes. This study aims to examine short- and long-term eye-health knowledge retention following eye-health educati... Vision Detroit was an outreach vision screening program that integrated a 5-Point Teaching Intervention (5PTI), at a Southwest Community Center (SW-CC) from 2015-2017. The 5PTI consists of eye-health ... Two-hundred-seventeen adult patients met inclusion criteria, with 75.8% women, 82.6% Hispanic, mean age 50.4 ± 16.2 years, 74.6% had high school or less education, and 49.2% had health insurance. Test... Simple eye-health education interventions, delivered during vision screenings and via community-based education, can improve eye-health knowledge....

Vision Impairment among Children in South India: Results from a Large-Scale School Eye Screening.

To provide the prevalence of vision impairment and blindness among 250,000 school children aged 6 to 17 years, screened in Tamil Nadu, India.... The study was conducted between 2016 and 2019 as a part of the school eye screening program in Kanchipuram district, Tamil Nadu. The clinical examination included basic vision testing, objective refra... A total of 250,052 children were screened in 1047 schools and the prevalence of vision impairment, blindness, and low vision in Kanchipuram district was 3.83%, 0.01%, 0.19%, respectively. The major ca... This large-scale school eye screening reports a comparatively lower prevalence of vision impairment, blindness, and low vision when compared to other studies conducted around the world. Although the o...

Barriers and facilitators to using ophthalmic clinical health services following school vision screening: a mixed-methods study.

To identify determinants of the utilisation of ophthalmic clinical health services among students who failed school vision screening.... This study employed a sequential explanatory mixed methods design, underpinned by Andersen's Behavioural Model of Health Service Utilisation. Data were initially gathered through interviews with 27 st... The research revealed that students attending vision demonstration schools and receiving encouragement from schools or communities to access clinical ophthalmic services demonstrated higher adherence ... The utilisation of ophthalmic clinical health services following vision screening failure in students is significantly influenced by public health services provided by schools or communities, such as ...

Barriers and facilitators of vision screening in the US pediatric primary care setting: a mixed methods systematic review protocol.

The objective of this review is to understand the barriers and facilitators of vision screening in the US primary care setting for children aged 3 to 17 years.... Childhood vision screening is crucial because it detects children at risk of undiagnosed vision problems. Previous studies report low rates of appropriate vision screening in the primary care setting.... Studies of all types that identify barriers and facilitators of vision screening in children aged 3 to 17 years in the pediatric primary care setting in the US will be considered for inclusion.... We will search PubMed, CINAHL Complete (EBSCO), Scopus, Web of Science (SCI-EXPANDED, ESCI, CPCI-S, SSCI), Cochrane Library, and Embase. We will also search gray literature, including conference proce... Open Science Framework https://osf.io/nhf5d/....